EXHIBIT 99.3

                       ESTERLINE TECHNOLOGIES CORPORATION

                LETTER TO DEPOSITORY TRUST COMPANY PARTICIPANTS
                         FOR TENDER OF ALL OUTSTANDING
                    $175,000,000 7.75% SENIOR NOTES DUE 2013
                                IN EXCHANGE FOR
                                   REGISTERED
                    $175,000,000 7.75% SENIOR NOTES DUE 2013

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
            , 2003, UNLESS EXTENDED (THE "EXPIRATION DATE"). NOTES TENDERED IN
SUCH EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M., NEW YORK
CITY TIME, ON THE EXPIRATION DATE.

To Depository Trust Company Participants:

     We are enclosing a prospectus dated           , 2003 of Esterline
Technologies Corporation (the "COMPANY") and the related letter of transmittal.
These two documents constitute the Company's offer to exchange its $175,000,000
7.75% Senior Notes due 2013 and the associated guarantees (together, the
"EXCHANGE NOTES"), the issuance of which has been registered under the
Securities Act of 1933, as amended (the "SECURITIES ACT"), for a like principal
amount of its issued and outstanding $175,000,000 7.75% Senior Notes due 2013
and the associated guarantees (together, the "ORIGINAL NOTES") (the "EXCHANGE
OFFER"). Additionally, we have included a notice of guaranteed delivery and a
letter that may be sent to your clients for whose account you hold Original
Notes in your name or in the name of your nominee, with space provided for
obtaining such client's instruction with regard to the Exchange Offer.

     We urge you to contact your clients promptly. Please note that the Exchange
Offer will expire on the Expiration Date unless extended.

     The Exchange Offer for Original Notes is not conditioned upon any minimum
aggregate principal amount of Original Notes being tendered for exchange.

     Pursuant to the letter of transmittal, each holder of Original Notes will
represent to the Company that (i) any Exchange Notes received are being acquired
in the ordinary course of business of the person receiving such Exchange Notes,
(ii) such person does not have an arrangement or understanding with any person
to participate in the distribution of the Original Notes or the Exchange Notes
within the meaning of the Securities Act and (iii) such person is not an
"affiliate," as defined in Rule 405 under the Securities Act, of the Company or,
if it is such an affiliate, it will comply with the registration and prospectus
delivery requirements of the Securities Act to the extent applicable. In
addition, each holder of Original Notes will represent to the Company that (i)
if such person is not a broker-dealer, it is not engaged in, and does not intend
to engage in, a distribution of Exchange Notes and (ii) if such person is a
broker-dealer that will receive Exchange Notes for its own account in exchange
for Original Notes that were acquired as a result of market-making activities or
other trading activities, it will deliver a prospectus in connection with any
resale of such Exchange Notes; however, by so acknowledging and by delivering a
prospectus, it will not be deemed to admit that it is an "underwriter" within
the meaning of the Securities Act.

     The enclosed Letter to Clients contains an authorization by the beneficial
owners of the Original Notes for you to make the foregoing representations.


     The Company will not pay any fee or commission to any broker or dealer or
to any other persons (other than the Exchange Agent) in connection with the
solicitation of tenders of Original Notes pursuant to the Exchange Offer. The
Company will pay or cause to be paid any transfer taxes payable on the transfer
of Original Notes to it, except as otherwise provided in Instruction 7 of the
enclosed letter of transmittal.

     Additional copies of the enclosed material may be obtained from the
undersigned.

                                         Very truly yours,

                                         THE BANK OF NEW YORK

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