<Page>
LETTER OF TRANSMITTAL
TO TENDER FOR EXCHANGE
10 3/8% SENIOR SUBORDINATED NOTES DUE 2008
OF
TRANSDIGM INC.
PURSUANT TO THE PROSPECTUS DATED , 2002
- --------------------------------------------------------------------------------
THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW
YORK CITY TIME, ON , 2002, UNLESS EXTENDED (THE "EXPIRATION DATE").
- --------------------------------------------------------------------------------
THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:
STATE STREET BANK AND TRUST COMPANY
<Table>
BY MAIL: BY FACSIMILE TRANSMISSION: BY HAND/OVERNIGHT
State Street Bank and (for eligible institutions only) DELIVERY:
Trust Company (617) 662-1452 State Street Bank and
P.O. Box 778 Confirm by Telephone: Trust Company
Boston, MA 02102-0078 (617) 662-1544 Two Avenue de Lafayette
Attn: Janice Lee 5th Floor, Corporate
Trust Window
Boston, MA 02111-1724
Attn. Janice Lee
</Table>
DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH
ABOVE OR TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA A FACSIMILE TRANSMISSION
TO A NUMBER OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.
The undersigned hereby acknowledges receipt of the prospectus, dated ,
2002, of TransDigm Inc., a Delaware corporation ("TransDigm"), which, together
with this letter of transmittal, constitute TransDigm's offer to exchange $1,000
principal amount of its 10?% Series B Senior Subordinated Notes due 2008 (the
"Exchange Notes"), which have been registered under the Securities Act of 1933,
as amended, for each $1,000 principal amount of its outstanding 10?% Series A
Senior Subordinated Notes due 2008 (the "Old Notes"), of which $75,000,000
aggregate principal amount is outstanding.
IF YOU DESIRE TO EXCHANGE YOUR 10 3/8% SERIES A SENIOR SUBORDINATED NOTES
DUE 2008 FOR AN EQUAL AGGREGATE PRINCIPAL AMOUNT OF 10 3/8% SERIES B SENIOR
SUBORDINATED NOTES DUE 2008, YOU MUST VALIDLY TENDER (AND NOT VALIDLY WITHDRAW)
YOUR NOTES TO THE EXCHANGE AGENT PRIOR TO THE EXPIRATION DATE.
YOU MUST SIGN THIS LETTER OF TRANSMITTAL WHERE INDICATED BELOW. PLEASE READ
THE INSTRUCTIONS SET FORTH BELOW CAREFULLY BEFORE COMPLETING THIS LETTER OF
TRANSMITTAL.
<Page>
This letter of transmittal is to be completed by holders of TransDigm's Old
Notes either if certificates representing such notes are to be forwarded
herewith or, unless an agent's message is utilized, tenders of such notes are to
be made by book-entry transfer to an account maintained by the exchange agent at
The Depository Trust Company pursuant to the procedures set forth in the
prospectus under the heading "The Exchange Offer--Book-Entry Transfer."
The undersigned has completed, executed and delivered this letter of
transmittal to indicate the action the undersigned desires to take with respect
to the exchange offer.
Holders that are tendering by book-entry transfer to the exchange agent's
account at DTC can execute the tender though the DTC Automated Tender Offer
Program, for which the exchange offer is eligible. DTC participants that are
tendering pursuant to the exchange offer must transmit their acceptance through
the Automated Tender Offer Program to DTC, which will edit and verify the
acceptance and send an agent's message to the exchange agent for its acceptance.
In order to properly complete this letter of transmittal, a holder of Old
Notes must:
- complete the box entitled "Description of Notes,"
- if appropriate, check and complete the boxes relating to guaranteed
delivery, "Special Issuance Instructions" and "Special Delivery
Instructions,"
- sign the letter of transmittal, and
- complete Substitute Form W-9.
If a holder desires to tender notes pursuant to the exchange offer and
(1) certificates representing such notes are not immediately available,
(2) time will not permit this letter of transmittal, certificates representing
such notes or other required documents to reach the exchange agent on or prior
to the expiration date, or (3) the procedures for book-entry transfer (including
delivery of an agent's message) cannot be completed on or prior to the
expiration date, such holder may nevertheless tender such notes with the effect
that such tender will be deemed to have been received on or prior to the
expiration date if the guaranteed delivery procedures described in the
prospectus under "The Exchange Offer--Guaranteed Delivery Procedures" are
followed. See Instruction 1 below.
PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL, INCLUDING THE INSTRUCTIONS,
AND THE PROSPECTUS CAREFULLY BEFORE COMPLETING THIS LETTER OF TRANSMITTAL OR
CHECKING ANY BOX BELOW. The instructions included with this letter of
transmittal must be followed. Questions and requests for assistance or for
additional copies of the prospectus and this letter of transmittal, the Notice
of Guaranteed Delivery and related documents may be directed to State Street
Bank and Trust Company, at the address and telephone number set forth on the
cover page of this letter of transmittal. See instruction 11 below.
2
<Page>
List below the Old Notes to which this letter of transmittal relates. If the
space provided is inadequate, list the certificate numbers and principal amounts
on a separately executed schedule and affix the schedule to this letter of
transmittal. Tenders of Old Notes will be accepted only in principal amounts
equal to $1,000 or integral multiples of $1,000.
<Table>
<Caption>
- --------------------------------------------------------------------------------------------------------
DESCRIPTION OF NOTES
- --------------------------------------------------------------------------------------------------------
AGGREGATE
NAME(S) AND ADDRESS(ES) OF PRINCIPAL PRINCIPAL
REGISTERED HOLDER(S) CERTIFICATE AMOUNT AMOUNT
(PLEASE FILL IN) NUMBER(S)* REPRESENTED** TENDERED**
- --------------------------------------------------------------------------------------------------------
------------------------------------------------
------------------------------------------------
------------------------------------------------
------------------------------------------------
- --------------------------------------------------------------------------------------------------------
TOTAL PRINCIPAL
AMOUNT OF NOTES
- --------------------------------------------------------------------------------------------------------
</Table>
* Need not be completed by holders delivering by book-entry transfer (see
below).
** Unless otherwise indicated in the column "Principal Amount Tendered" and
subject to the terms and conditions of the exchange offer, the holder will
be deemed to have tendered the entire aggregate principal amount represented
by each note listed above and delivered to the exchange agent. See
Instruction 4.
3
<Page>
PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL
CAREFULLY BEFORE COMPLETING THE BOXES BELOW
/ / CHECK HERE IF CERTIFICATES FOR TENDERED OLD NOTES ARE ENCLOSED HEREWITH.
/ / CHECK HERE IF TENDERED NOTES ARE BEING DELIVERED BY BOOK- ENTRY TRANSFER
MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH THE DTC AND
COMPLETE THE FOLLOWING:
Name of Tendering Institution: _____________________________________________
Account Number with DTC: ___________________________________________________
Transaction Code Number: ___________________________________________________
/ / CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED DELIVERY IF
TENDERED NOTES ARE BEING DELIVERED PURSUANT TO A NOTICE OF GUARANTEED
DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND COMPLETE THE FOLLOWING:
Name(s) of Registered Holder(s): ___________________________________________
Window Ticket Number(s) (if any): __________________________________________
Date of Execution of the Notice of Guaranteed Delivery: ____________________
Name of Eligible Institution that Guaranteed Delivery: _____________________
IF DELIVERED BY BOOK-ENTRY TRANSFER, COMPLETE THE FOLLOWING:
Name of Tendering Institution: _____________________________________________
Account Number at DTC: _____________________________________________________
Transaction Code Number: ___________________________________________________
/ / CHECK HERE IF YOU ARE A BROKER-DEALER THAT ACQUIRED YOUR TENDERED NOTES FOR
YOUR OWN ACCOUNT AS A RESULT OF MARKET-MAKING ACTIVITIES OR OTHER TRADING
ACTIVITIES AND WISH TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10
COPIES OF ANY AMENDMENTS OR SUPPLEMENTS THERETO.
Name: ______________________________________________________________________
Address: ___________________________________________________________________
NOTE: SIGNATURES MUST BE PROVIDED BELOW
4
<Page>
PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY
Ladies and Gentlemen:
Upon the terms and subject to the conditions of the exchange offer, the
undersigned hereby tenders to TransDigm the principal amount of Old Notes
described above. Subject to, and effective upon, the acceptance for exchange of
the Old Notes tendered herewith, the undersigned hereby sells, assigns and
transfers to, or upon the order of, TransDigm all right, title and interest in
and to such Old Notes.
The undersigned hereby irrevocably constitutes and appoints the exchange
agent as the true and lawful agent and attorney-in-fact of the undersigned (with
full knowledge that the exchange agent also acts as the agent of TransDigm and
as trustee under the indenture relating to the Old Notes) with respect to such
tendered notes, with full power of substitution and resubstitution (such power
of attorney being deemed to be an irrevocable power coupled with an interest),
subject only to the right of withdrawal described in the prospectus, to
(1) deliver certificates representing such tendered notes, or transfer ownership
of such notes, on the account books maintained by DTC, and to deliver all
accompanying evidence of transfer and authenticity to, or upon the order of,
TransDigm upon receipt by the exchange agent, as the undersigned's agent, of the
Exchange Notes to which the undersigned is entitled upon the acceptance by
TransDigm of such Old Notes for exchange pursuant to the exchange offer,
(2) receive all benefits and otherwise to exercise all rights of beneficial
ownership of such Old Notes, all in accordance with the terms and conditions of
the exchange offer, and (3) present such Old Notes for transfer, and transfer
such Old Notes, on the relevant security register.
The undersigned hereby represents and warrants that the undersigned
(1) owns the notes tendered and is entitled to tender such notes, and (2) has
full power and authority to tender, sell, exchange, assign and transfer the Old
Notes and to acquire Exchange Notes issuable upon the exchange of such tendered
notes, and that, when the same are accepted for exchange, TransDigm will acquire
good, marketable and unencumbered title to the tendered notes, free and clear of
all liens, restrictions, charges and encumbrances and not subject to any adverse
claim or right or restriction or proxy of any kind. The undersigned also
warrants that it will, upon request, execute and deliver any additional
documents deemed by the exchange agent or TransDigm to be necessary or desirable
to complete the sale, exchange, assignment and transfer of tendered notes or to
transfer ownership of such notes on the account books maintained by DTC. The
undersigned has read and agrees to all of the terms of the exchange offer.
The undersigned understands that tenders of the Old Notes pursuant to any
one of the procedures described in the prospectus under the caption "The
Exchange Offer--Procedures for Tendering Old Notes" and in the instructions to
this letter of transmittal will, upon TransDigm's acceptance of the notes for
exchange, constitute a binding agreement between the undersigned and TransDigm
in accordance with the terms and subject to the conditions of the exchange
offer.
The exchange offer is subject to the conditions set forth in the prospectus
under the caption "The Exchange Offer--Conditions to the Exchange Offer." The
undersigned recognizes that as a result of these conditions (which may be
waived, in whole or in part, by TransDigm) as more particularly set forth in the
prospectus, TransDigm may not be required to exchange any of the Old Notes
tendered by this letter of transmittal and, in such event, the Old Notes not
exchanged will be returned to the undersigned at the address shown below the
signature of the undersigned.
Unless a box under the heading "Special Issuance Instructions" is checked,
by tendering Old Notes and executing this letter of transmittal, the undersigned
hereby represents and warrants that:0
(i) the undersigned or any beneficial owner of the Old Notes is
acquiring the offered notes in the ordinary course of business of the
undersigned (or such other beneficial owner);
(ii) neither the undersigned nor any beneficial owner is engaging in or
intends to engage in a distribution of the offered notes within the meaning
of the federal securities laws;
(iii) neither the undersigned nor any beneficial owner has an arrangement
or understanding with any person or entity to participate in a distribution
of the offered notes;
5
<Page>
(iv) neither the undersigned nor any beneficial owner is an "affiliate,"
as such term is defined under Rule 405 promulgated under the Securities Act
of 1933, of TransDigm. Upon request by TransDigm, the undersigned or such
beneficial owner will deliver to TransDigm a legal opinion confirming it is
not such an affiliate;
(v) if the undersigned or any beneficial owner is a resident of the
State of California, if falls under the self-executing institutional
investor exemption set forth under Section 25102(i) of the Corporate
Securities Law of 1968 and Rules 260.102.10 and 260.105.14 of the California
Blue Sky Regulations;
(vi) if the undersigned or any beneficial owner is a resident of the
Commonwealth of Pennsylvania, it falls under the self-executing
institutional investor exemption set forth under Sections 203(c), 102(d) and
(k) of the Pennsylvania Securities Act of 1972, Section 102.111 of the
Pennsylvania Blue Sky Regulations and an interpretive opinion dated
November 16, 1985;
(vii) the undersigned and each beneficial owner acknowledges and agrees
that any person who is a broker-dealer registered under the Securities
Exchange Act of 1934, as amended, or is participating in the exchange offer
for the purpose of disturbing the Exchange Notes, must comply with the
registration and delivery requirements of the Securities Act in connection
with a secondary resale transaction of the Exchange Notes or interests
therein acquired by such person and cannot rely on the position of the staff
of the Securities and Exchange Commission (the "SEC") set forth in certain
no-action letters;
(viii) the undersigned and each beneficial owner understands that a
secondary resale transaction described in clause (vii) above and any resales
of Exchange Notes or interests therein obtained by such holder in exchange
for Old Notes or interests therein originally acquired by such holder
directly from TransDigm should be covered by an effective registration
statement containing the selling security holder information required by
Item 507 or Item 508, as applicable, of Regulation S-K or the SEC; and
(ix) the undersigned is not acting on behalf of any person or entity who
could not truthfully make the foregoing representations.
The undersigned may, IF AND ONLY IF UNABLE TO MAKE ALL OF THE
REPRESENTATIONS AND WARRANTIES CONTAINED IN (i)-(ix) ABOVE, elect to have its
Old Notes registered in the shelf registration described in the Registration
Rights Agreement, dated as of June 7, 2002, by and among TransDigm, the
guarantors and Deutsche Bank Securities Inc. and Credit Suisse First Boston
Corporation, in the form filed as an exhibit to the registration statement of
which the prospectus is a part. Such election may be made by checking a box
under "Special Issuance Instructions" below. By making such election, the
undersigned agrees, jointly and severally, as a holder of transfer restricted
securities participating in a shelf registration, to indemnify and hold harmless
TransDigm, the guarantors, their respective agents, employees, directors and
officers and each Person who controls TransDigm or any of the guarantors, within
the meaning of Section 15 of the Securities Act or Section 20(a) of the
Securities Exchange Act of 1934, as amended, against any and all losses, claims,
judgments, damages and liabilities whatsoever (including, without limitation,
the reasonable legal and other expenses incurred in connection with any matter,
including any action that could give rise to such losses, claims, judgments,
damages or liabilities) arising out of or based upon (i) any untrue statement or
alleged untrue statement of any material fact contained in the shelf
registration statement filed with respect to such Old Notes or the prospectus or
in any amendment thereof or supplement thereto or (ii) the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, in each case to the
extent, but only to the extent, that any such loss, claim, damage or liability
arises out of or is based upon any untrue statement or alleged untrue statement
or omission or alleged omission made therein based on information relating to
the undersigned furnished to TransDigm in writing by or on behalf of the
undersigned expressly for use therein. Any such indemnification shall be
governed by the terms and subject to the conditions set forth in the
Registration Rights Agreement, including, without limitation, the provisions
regarding notice, retention of counsel, contribution and payment of expenses set
forth therein. The above summary of the indemnification provision of the
Registration Rights Agreement is not intended to be exhaustive and is qualified
in its entirety by reference to the Registration Rights Agreement.
If the undersigned is a broker-dealer that will receive offered notes for
its own account in exchange for Old Notes that were acquired as a result of
market-making activities or other trading activities, it acknowledges that it
will deliver a prospectus meeting the requirements of the Securities Act in
connection with any resale of such offered notes, however, by so acknowledging
and delivering a prospectus, the undersigned will not be deemed to
6
<Page>
admit that it is an "underwriter" within the meaning of the Securities Act. If
the undersigned is a broker-dealer and Old Notes held for its own account were
not acquired as a result of market-making or other trading activities, such Old
Notes cannot be exchange pursuant to the exchange offer.
All authority herein conferred or agreed to be conferred shall not be
affected by, and shall survive the death, bankruptcy or incapacity of the
undersigned and every obligation of the undersigned hereunder shall be binding
upon the heirs, personal representatives, executors, administrators, successors,
assigns, trustees in bankruptcy and other legal representatives of the
undersigned.
Tendered Old Notes may be withdrawn at any time prior to 5:00 p.m., New York
City time on ______, 2002 or on such later date or time to which TransDigm may
extend the exchange offer.
Unless otherwise indicated herein under the box entitled "Special Issuance
Instructions" below, Exchange Notes, and Old Notes not tendered or accepted for
exchange, will be issued in the name of the undersigned. Similarly, unless
otherwise indicated under the box entitled "Special Delivery Instructions"
below, Exchange Notes, and Old Notes not tendered or accepted for exchange, will
be delivered to the undersigned at the address shown below the signature of the
undersigned. In the case of a book-entry delivery of notes, the exchange agent
will credit the account maintained by DTC with any notes not tendered. The
undersigned recognizes that TransDigm has no obligation pursuant to the "Special
Issuance Instructions" to transfer any Old Notes from the name of the registered
holder thereof if TransDigm does not accept for exchange any of the principal
amount of such Old Notes so tendered.
The Exchange Notes will bear interest from the most recent interest payment
date to which interest has been paid on the Old Notes, or if no interest has
been paid, from June 1, 2002. Interest on the Old Notes accepted for exchange
will cease to accrue upon the issuance of the Exchange Notes.
7
<Page>
- --------------------------------------------------------------------------------
PLEASE SIGN HERE
(To Be Completed By All Tendering Holders
of Old Notes)
This letter of transmittal must be signed by the registered holder(s) of
Old Notes exactly as their name(s) appear(s) on certificate(s) for Old Notes
or on a security position listing, or by person(s) authorized to become
registered holder(s) by endorsements and documents transmitted with this
letter of transmittal, including such opinions of counsel, certifications
and other information as may be required by TransDigm or the trustee for the
Old Notes to comply with the restrictions on transfer applicable to the Old
Notes. If the signature is by a trustee, executor, administrator, guardian,
attorney-in-fact, officer or other person acting in a fiduciary or
representative capacity, such person must set forth his or her full title
below under "Capacity" and submit evidence satisfactory to the exchange
agent of such person's authority to so act. See Instruction 5 below. If the
signature appearing below is not of the registered holder(s) of the Old
Notes, then the registered holder(s) must sign a valid power of attorney.
X __________________________________________________________________________
X __________________________________________________________________________
Signature(s) of Holder(s) or Authorized Signatory
Dated: _____, 2002
Name(s): ___________________________________________________________________
Capacity: __________________________________________________________________
Address: ___________________________________________________________________
____________________________________________________________________________
(Zip Code)
Area Code and Telephone No.: _______________________________________________
GUARANTEE OF SIGNATURE(S)
(IF REQUIRED--SEE INSTRUCTIONS 2 AND 5 BELOW)
Certain Signatures Must be Guaranteed by a Signature Guarantor
____________________________________________________________________________
(Name of Signature Guarantor Guaranteeing Signatures)
____________________________________________________________________________
(Address (including zip code) and Telephone Number (including area code) of
Firm)
____________________________________________________________________________
(Authorized Signature)
____________________________________________________________________________
(Printed Name)
____________________________________________________________________________
(Title)
Dated:______, 2002
----------------------------------------------------------------------------
8
<Page>
----------------------------------------------------
SPECIAL ISSUANCE INSTRUCTIONS
(SEE INSTRUCTIONS 4 THROUGH 7)
To be completed ONLY if (i) certificates for Old Notes in a principal amount
not tendered are to be issued in the name of, or Exchange Notes issued
pursuant to the exchange offer are to be issued in the name of, someone
other than the person or persons whose name(s) appear(s) within this letter
of transmittal or issued to an address different from that shown in the box
entitled "Description of Notes" within this letter of transmittal, (ii) Old
Notes not tendered, but represented by certificates tendered by this letter
of transmittal, are to be returned by credit to an account maintained at DTC
other than the account indicated above or (iii) Exchange Notes issued
pursuant to the exchange offer are to be issued by book-entry transfer to an
account maintained at DTC other than the account indicated above.
Issue:
/ / Exchange Notes, to:
/ / Old Notes, to:
Name(s) ____________________________________________________________________
Address ____________________________________________________________________
Telephone Number: __________________________________________________________
____________________________________________________________________________
(TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER)
DTC Account Number: ________________________________________________________
- ------------------------------------------------
- ------------------------------------------------
SPECIAL DELIVERY INSTRUCTIONS
(SEE INSTRUCTIONS 4 THROUGH 7)
To be completed ONLY if certificates for Old Notes in a principal amount not
tendered, or Exchange Notes, are to be sent to someone other than the person
or persons whose name(s) appear(s) within this letter of transmittal to an
address different from that shown in the box entitled "Description of Notes"
within this letter of transmittal.
Deliver:
/ / Exchange Notes, to:
/ / Old Notes, to:
Name(s) ____________________________________________________________________
Address ____________________________________________________________________
Telephone Number: __________________________________________________________
____________________________________________________________________________
(TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER)
Is this a permanent address change? (check one box)
/ / Yes / / No
---------------------------------------------------
9
<Page>
INSTRUCTIONS TO LETTER OF TRANSMITTAL
(FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER)
1. DELIVERY OF THIS LETTER OF TRANSMITTAL AND NOTES. This letter of
transmittal is to be completed by holders of Old Notes if certificates
representing such notes are to be forwarded herewith, or, unless an agent's
message is utilized, if tender is to be made by book-entry transfer to the
account maintained by DTC, pursuant to the procedures set forth in the
prospectus under "The Exchange Offer--Procedures for Tendering Old Notes." For a
holder to properly tender notes pursuant to the exchange offer, a properly
completed and duly executed letter of transmittal (or a manually signed
facsimile thereof), together with any signature guarantees and any other
documents required by these Instructions, or a properly transmitted agent's
message in the case of a book entry transfer, must be received by the exchange
agent at its address set forth herein on or prior to the expiration date, and
either (1) certificates representing such notes must be received by the exchange
agent at its address, or (2) such notes must be transferred pursuant to the
procedures for book-entry transfer described in the prospectus under "The
Exchange Offer--Book-Entry Transfer" and a book-entry confirmation must be
received by the exchange agent on or prior to the expiration date. A holder who
desires to tender notes and who cannot comply with procedures set forth herein
for tender on a timely basis or whose notes are not immediately available must
comply with the guaranteed delivery procedures discussed below.
THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, THE OLD NOTES AND ALL
OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE ELECTION AND SOLE RISK
OF THE HOLDER AND DELIVERY WILL BE DEEMED TO BE MADE ONLY WHEN ACTUALLY RECEIVED
BY THE EXCHANGE AGENT. INSTEAD OF DELIVERY BY MAIL, HOLDERS SHOULD USE AN
OVERNIGHT OR HAND DELIVERY SERVICE. IN ALL CASES, HOLDERS SHOULD ALLOW FOR
SUFFICIENT TIME TO ENSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE EXPIRATION
OF THE EXCHANGE OFFER AND PROPER INSURANCE SHOULD BE OBTAINED. HOLDERS MAY
REQUEST THEIR BROKER, DEALER, COMMERCIAL BANK, TRUST COMPANY OR NOMINEE TO
EFFECT THESE TRANSACTIONS FOR SUCH HOLDER. HOLDERS SHOULD NOT SEND ANY NOTE,
LETTER OF TRANSMITTAL OR OTHER REQUIRED DOCUMENT TO TRANSDIGM.
If a holder desires to tender notes pursuant to the exchange offer and
(1) certificates representing such notes are not immediately available,
(2) time will not permit such holder's letter of transmittal, certificates
representing such notes or other required documents to reach the exchange agent
on or prior to the expiration date, or (3) the procedures for book-entry
transfer (including delivery of an agent's message) cannot be completed on or
prior to the expiration date, such holder may nevertheless tender such notes
with the effect that such tender will be deemed to have been received on or
prior to the expiration date if the guaranteed delivery procedures set forth in
the prospectus under "The Exchange Offer--Guaranteed Delivery Procedures" are
followed. Pursuant to such procedures, (1) the tender must be made by or through
an eligible guarantor institution (as defined below), (2) a properly completed
and duly executed notice of guaranteed delivery, substantially in the form
provided by TransDigm herewith, or an agent's message with respect to a
guaranteed delivery that is accepted by TransDigm, must be received by the
exchange agent on or prior to the expiration date, and (3) the certificates for
the tendered notes, in proper form for transfer (or a book-entry confirmation of
the transfer of such notes into the exchange agent's account at DTC as described
in the prospectus) together with a letter of transmittal (or manually signed
facsimile thereof) properly completed and duly executed, with any required
signature guarantees and any other documents required by the letter of
transmittal, or a properly transmitted agent's message, must be received by the
exchange agent within three New York Stock Exchange, Inc. trading days after the
execution of the notice of guaranteed delivery.
10
<Page>
The notice of guaranteed delivery may be delivered by hand or transmitted by
facsimile or mail to the exchange agent and must include a guarantee by an
eligible guarantor institution in the form set forth in the notice of guaranteed
delivery. For Old Notes to be properly tendered pursuant to the guaranteed
delivery procedure, the exchange agent must receive a notice of guaranteed
delivery prior to the expiration date. As used herein and in the prospectus,
"eligible guarantor institution" means a firm or other entity identified in
Rule 17Ad-15 under the Exchange Act as "an eligible guarantor institution,"
including (as such terms are defined therein): (i) a bank; (ii) a broker,
dealer, municipal securities broker or dealer or government securities broker or
dealer; (iii) a credit union; (iv) a national securities exchange, registered
securities association or clearing agency; or (v) a savings association that is
a participant in a Securities Transfer Association.
2. GUARANTEE OF SIGNATURES. Signatures on this letter of transmittal must
be guaranteed by a member of or participant in the Securities Transfer Agents
Medallion Program, the New York Stock Exchange, Inc. Medallion Signature Program
or the Stock Exchange Medallion Program or by an eligible guarantor institution
unless the notes tendered hereby are tendered (1) by a registered holder of
notes (or by a participant in DTC whose name appears on a security position
listing as the owner of such notes) who has signed this letter of transmittal
and who has not completed any of the boxes entitled "Special Issuance
Instructions" or "Special Delivery Instructions," on the letter of transmittal,
or (2) for the account of an eligible guarantor institution. If the notes are
registered in the name of a person other than the signer of the letter of
transmittal or if notes not tendered are to be returned to, or are to be issued
to the order of, a person other than the registered holder or if notes not
tendered are to be sent to someone other than the registered holder, then the
signature on this letter of transmittal accompanying the tendered notes must be
guaranteed as described above. Beneficial owners whose notes are registered in
the name of a broker, dealer, commercial bank, trust company or other nominee
must contact such broker, dealer, commercial bank, trust company or other
nominee if they desire to tender notes. See "The Exchange Offer--Procedures for
Tendering Old Notes," in the prospectus.
3. WITHDRAWAL OF TENDERS. Except as otherwise provided in the prospectus,
tenders of notes may be withdrawn at any time on or prior to the expiration
date. For a withdrawal of tendered notes to be effective, a written, telegraphic
or facsimile transmission notice of withdrawal must be received by the exchange
agent on or prior to the expiration date at its address set forth on the cover
of this letter of transmittal. Any such notice of withdrawal must (1) specify
the name of the person who tendered the notes to be withdrawn, (2) identify the
notes to be withdrawn, including the certificate number or numbers shown on the
particular certificates evidencing such notes (unless such notes were tendered
by book-entry transfer), the aggregate principal amount represented by such
notes and the name of the registered holder of such notes, if different from
that of the person who tendered such notes, (3) be signed by the holder of such
notes in the same manner as the original signature on the letter of transmittal
by which such notes were tendered (including any required signature guarantees),
or be accompanied by (i) documents of transfer sufficient to have the trustee
register the transfer of the notes into the name of the person withdrawing such
notes, and (ii) a properly completed irrevocable proxy authorizing such person
to effect such withdrawal on behalf of such holder (unless the notes were
tendered by book entry transfer), and (4) specify the name in which any such
notes are to be registered, if different from that of the registered holder. If
the notes were tendered pursuant to the procedures for book-entry transfer sent
forth in "The Exchange Offer--Procedures for Tendering Old Notes," the notice of
withdrawal must specify the name and number of the account at DTC to be credited
with the withdrawal of Old Notes and must otherwise comply with the procedures
of DTC. If the notes to be withdrawn have been delivered or otherwise identified
to the exchange agent, a signed notice of withdrawal is effective immediately
upon written or facsimile notice of such withdrawal even if physical release is
not yet effected.
11
<Page>
Any permitted withdrawal of notes may not be rescinded. Any notes properly
withdrawn will thereafter be deemed not validly tendered for purposes of the
exchange offer. However, properly withdrawn notes may be retendered by following
one of the procedures described in the prospectus under the caption "The
Exchange Offer--Procedures for Tendering Old Notes" at any time prior to the
expiration date.
All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by TransDigm, in its sole
discretion, which determination shall be final and binding on all parties.
Neither TransDigm, any affiliates of TransDigm, the exchange agent or any other
person shall be under any duty to give any notification of any defects or
irregularities in any notice of withdrawal or incur any liability for failure to
give any such notification.
4. PARTIAL TENDERS. Tenders of notes pursuant to the exchange offer will
be accepted only in principal amounts equal to $1,000 or integral multiples of
$1,000. If less than the entire principal amount of any notes evidenced by a
submitted certificate is tendered, the tendering holder must fill in the
principal amount tendered in the last column of the box entitled "Description of
Notes" herein. The entire principal amount represented by the certificates for
all notes delivered to the exchange agent will be deemed to have been tendered
unless otherwise indicated. If the entire principal amount of all notes held by
the holder is not tendered, new certificates for the principal amount of notes
not tendered and Exchange Notes issued in exchange for any notes tendered and
accepted will be sent (or, if tendered by book-entry transfer, returned by
credit to the account at DTC designated herein) to the holder unless otherwise
provided in the appropriate box on this letter of transmittal (see Instruction
6), as soon as practicable following the expiration date.
5. SIGNATURE ON THIS LETTER OF TRANSMITTAL; BOND POWERS AND ENDORSEMENTS;
GUARANTEE OF SIGNATURES. If this letter of transmittal is signed by the
registered holder(s) of the Old Notes tendered hereby, the signature must
correspond exactly with the name(s) as written on the face of certificates
without alteration, enlargement or change whatsoever. If this letter of
transmittal is signed by a participant in DTC whose name is shown as the owner
of the notes tendered hereby, the signature must correspond with the name shown
on the security position listing the owner of the notes.
If any of the notes tendered hereby are owned of record by two or more joint
owners, all such owners must sign this letter of transmittal.
If any tendered notes are registered in different names on several
certificates, it will be necessary to complete, sign and submit as many copies
of this letter of transmittal and any necessary accompanying documents as there
are different names in which certificates are held.
If this letter of transmittal is signed by the holder, and the certificates
for any principal amount of notes not tendered are to be issued (or if any
principal amount of notes that is not tendered is to be reissued or returned) to
or, if tendered by book-entry transfer, credited to the account of DTC of the
registered holder, and Exchange Notes exchanged for Old Notes in connection with
the exchange offer are to be issued to the order of the registered holder, then
the registered holder need not endorse any certificates for tendered notes nor
provide a separate bond power. In any other case (including if this letter of
transmittal is not signed by the registered holder), the registered holder must
either properly endorse the certificates for notes tendered or transmit a
separate properly completed bond power with this letter of transmittal (in
either case, executed exactly as the name(s) of the registered holder(s)
appear(s) on such notes, and, with respect to a participant in DTC whose name
appears on a security position listing as the owner of notes, exactly as the
name(s) of the participant(s) appear(s) on such security position listing), with
the signature on the endorsement or bond power guaranteed by a signature
guarantor or an eligible guarantor institution, unless such certificates or bond
powers are executed by an eligible guarantor institution, and must also be
accompanied by such opinions of
12
<Page>
counsel, certifications and other information as TransDigm or the trustee for
the original notes may require in accordance with the restrictions on transfer
applicable to the Old Notes. See Instruction 2.
Endorsements on certificates for notes and signatures on bond powers
provided in accordance with this Instruction 5 by registered holders not
executing this letter of transmittal must be guaranteed by an eligible
institution. See Instruction 2.
If this letter of transmittal or any certificates representing notes or bond
powers are signed by trustees, executors, administrators, guardians,
attorneys-in-fact, officers of corporations or others acting in a fiduciary or
representative capacity, such persons should so indicate when signing, and
proper evidence satisfactory to the exchange agent, in its sole discretion, of
their authority so to act must be submitted with this letter of transmittal.
6. SPECIAL ISSUANCE AND SPECIAL DELIVERY INSTRUCTIONS. Tendering holders
should indicate in the applicable box or boxes the name and address to which
notes for principal amounts not tendered or Exchange Notes exchanged for Old
Notes in connection with the exchange offer are to be issued or sent, if
different from the name and address of the holder signing this letter of
transmittal. In the case of issuance in a different name, the
taxpayer-identification number of the person named must also be indicated.
Holders tendering by book-entry transfer may request that Old Notes not
exchanged be credited to such accounted maintained at DTC as such holder may
designate. If no instructions are given, notes not tendered will be returned to
the registered holder of the notes tendered. For holders of notes tendered by
book-entry transfer, notes not tendered will be returned by crediting the
account at DTC designated above.
7. TAXPAYER IDENTIFICATION NUMBER AND SUBSTITUTE FORM W-9. Federal income
tax law generally requires that each tendering holder is required to provide the
exchange agent with its correct taxpayer identification number, which, in the
case of a holder who is an individual, is his or her social security number. If
the exchange agent is not provided with the correct taxpayer identification
number or an adequate basis for an exemption, the holder may be subject to
backup withholding in an amount equal to up to 30% of the reportable payments
made with respect to the notes and a $50 penalty imposed by the Internal Revenue
Service. If withholding results in an over-payment of taxes, a refund may be
obtained. Certain holders (including, among others, all corporations and certain
foreign individuals) are not subject to these backup withholding and reporting
requirements. See the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional instructions.
To prevent backup withholding, each holder tendering Old Notes must provide
such holder's correct taxpayer identification number by completing the
Substitute Form W-9 set forth herein, certifying that the taxpayer
identification number provided is correct (or that such holder is awaiting a
taxpayer identification number), and that (i) such holder is exempt from backup
withholding, (ii) the holder has not been notified by the Internal Revenue
Service that such holder is subject to backup withholding as a result of failure
to report all interest or dividends or (iii) the Internal Revenue Service has
notified the holder that such holder is no longer subject to backup withholding
and that such holder is a U.S. person. Holders awaiting a taxpayer
identification number may be subject to backup withholding until a taxpayer
identification number is provided.
If the holder tending Old Notes does not have a taxpayer identification
number, such holder should consult the "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for instructions on applying for a
taxpayer identification number, check the "Awaiting TIN" box on part 3 of the
Substitute Form W-9, and sign and date the Substitute Form W-9 and the
Certification of Awaiting Taxpayer Identification Number set forth herein.
13
<Page>
If the Old Notes are registered in more than one name or are not in the name
of the actual owner, consult the "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for information on which taxpayer
identification number to report.
Exempt holders tendering Old Notes (including, among others, all
corporations and certain foreign individuals) are not subject to these backup
withholding and reporting requirements. To prevent possible erroneous backup
withholding, an exempt holder tendering Old Notes must enter its correct
taxpayer identification number in Part I of the Substitute Form W-9 and sign and
date the form. See the "Guidelines for Certification of Taxpayer Identification
Number on Substitute Form W-9" for additional instructions. In order for a
nonresident alien or foreign entity to qualify as exempt, such person must
submit a completed Form W-8, "Certificate of Foreign Status," signed under
penalty of perjury attesting to such exempt status. Such form may be obtained
from the exchange agent.
TransDigm reserves the right in its sole discretion to take whatever steps
are necessary to comply with its obligation regarding backup withholding.
8. TRANSFER TAXES. TransDigm will pay all transfer taxes, if any, required
to be paid by TransDigm in connection with the exchange of the Old Notes for the
Exchange Notes. If, however, Exchange Notes, or Old Notes for principal amounts
not tendered or accepted for exchange, are to be delivered to, or are to be
issued in the name of, any person other than the registered holder of the Old
Notes tendered, or if a transfer tax is imposed for any reason other than the
exchange of the Old Notes in connection with the exchange offer, then the amount
of any transfer tax (whether imposed on the registered holder or any other
persons) will be payable by the tendering holder. If satisfactory evidence of
payment of the transfer taxes or exemption therefrom is not submitted with the
letter of transmittal, the amount of such transfer taxes will be billed directly
to the tendering holder.
9. MUTILATED, LOST, STOLEN OR DESTROYED OLD NOTES. If any certificate
representing Old Notes has been mutilated, lost, stolen or destroyed, the holder
should promptly contact the exchange agent at the address indicated above. The
holder will then be instructed as to the steps that must be taken in order to
replace the certificate. This letter of transmittal and related documents cannot
be processed until the procedures for replacing mutilated, lost, stolen or
destroyed certificates have been followed.
10. IRREGULARITIES. All questions as to the validity, form, eligibility,
time of receipt, acceptance and withdrawal of any tenders of notes pursuant to
the procedures described in the prospectus and the form and validity of all
documents will be determined by TransDigm, in its sole discretion, which
determination shall be final and binding on all parties. TransDigm reserves the
absolute right, in its sole and absolute discretion, to reject any or all
tenders of any notes determined by it not to be in proper form or the acceptance
of which may, in the opinion of TransDigm's counsel, be unlawful. TransDigm also
reserves the absolute right, in its sole discretion subject to applicable law,
to waive or amend any of the conditions of the exchange offer or to waive any
defect or irregularity in the tender of any particular notes, whether or not
similar defects or irregularities are waived in the case of other tenders.
TransDigm's interpretations of the terms and conditions of the exchange offer
(including, without limitation, the instructions in this letter of transmittal)
shall be final and binding. No alternative, conditional or contingent tenders
will be accepted. Unless waived, any irregularities in connection with tenders
must be cured within such time as TransDigm shall determine. Each tendering
holder, by execution of a letter of transmittal (or a manually signed facsimile
thereof), waives any right to receive any notice of the acceptance of such
tender. Tenders of such notes shall not be deemed to have been made until such
irregularities have been cured or waived. Any notes received by the exchange
agent that are not properly tendered and as to which the irregularities have not
been cured or waived will be returned by the exchange agent to the tendering
holders, unless such holders have otherwise provided herein, promptly following
the expiration date. None of TransDigm, any of its affiliates, the exchange
agent or any other person will be under any duty to give notification of any
14
<Page>
defects or irregularities in such tenders or will incur any liability to holders
for failure to give such notification.
11. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. Questions relating to the
procedure for tendering, as well as requests for assistance or additional copies
of the prospectus, this letter of transmittal and the notice of guaranteed
delivery may be directed to the exchange agent at the address and telephone
number set forth above. Holders may also contact their broker, dealer,
commercial bank, trust company or other nominee for assistance concerning the
exchange offer.
IMPORTANT: THIS LETTER OF TRANSMITTAL OR A FACSIMILE THEREOF (TOGETHER WITH
CERTIFICATES FOR OLD NOTES OR A BOOK ENTRY-CONFIRMATION AND ALL OTHER REQUIRED
DOCUMENTS) OR A NOTICE OF GUARANTEED DELIVERY MUST BE RECEIVED BY THE EXCHANGE
AGENT ON OR PRIOR TO 5:00 P.M., NEW YORK CITY TIME ON THE EXPIRATION DATE.
15
<Page>
PAYER'S NAME: STATE STREET BANK AND TRUST COMPANY.
<Table>
- ------------------------------------------------------------------------------------------------------------
SUBSTITUTE PART 1--PLEASE PROVIDE YOUR TIN IN THE BOX AT RIGHT AND -------------------
FORM W-9 CERTIFY BY SIGNING AND DATING BELOW. Social Security
Number(s)
OR
-------------------
Employer
Identification
Number(s)
---------------------------------------------------------------------------------
DEPARTMENT OF THE PART 2-- PART 3--
TREASURY INTERNAL CERTIFICATION -- Under Penalties of Perjury, I certify Awaiting TIN
REVENUE SERVICE that: / /
(1) Awaiting TIN Revenue Service The number shown on
this form is my correct taxpayer identification number
(or I am waiting for a number to be issued for me),
(2) I am not subject to backup withholding because: (a)
I am exempt from backup withholding, or (b) I have not
been notified by the Internal Revenue Service (IRS) that
I am subject to backup withholding as a result of a
failure to report all interest or dividends, or (c) the
IRS has notified me that I am no longer subject to
backup withholding, and
(3) I am a U.S. person (including a U.S. resident
alien).
------------------------------------------------------------------------------
PAYER'S REQUEST FOR CERTIFICATION INSTRUCTIONS -- You must cross out item (2) in Part 2 if you have
TAXPAYER been notified by the IRS that you are currently subject to backup withholding
IDENTIFICATION NUMBER because of underreporting interest or dividends on your tax return.
("TIN") AND Name Address
CERTIFICATIONS (include zip code)
SIGNATURE DATE
- ------------------------------------------------------------------------------------------------------------
</Table>
NOTE: FAILURE TO PROPERLY COMPLETE AND RETURN THIS FORM MAY RESULT IN A $50
PENALTY IMPOSED BY THE INTERNAL REVENUE SERVICE AND BACKUP WITHHOLDING OF 30% OF
ANY REPORTABLE PAYMENTS MADE TO YOU. PLEASE REVIEW THE ENCLOSED GUIDELINES FOR
CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR
ADDITIONAL DETAILS.
NOTE: YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX IN PART
3 OF THE SUBSTITUTE FORM W-9.
CERTIFICATION OF AWAITING TAXPAYER IDENTIFICATION NUMBER
I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (1) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration office or
(2) I intend to mail or deliver an application in the near future. I understand
that until I provide a taxpayer identification number to the payer, 30% of all
reportable payments made to me thereafter by the payer may be withheld and
remitted to the IRS as backup withholding.
SIGNATURE ________________________________ DATE _______________________________
16