EXHIBIT 5.1



                        [Letterhead of Perkins Coie LLP]

                               September 30, 2003



Esterline Technologies Corporation
500 108th Avenue NE
Bellevue, Washington  98004

         RE: EXCHANGE OFFER RELATING TO 7.75% EXCHANGE NOTES DUE 2013

Ladies and Gentlemen:

         We have acted as counsel to you and the additional registrants (the
"Subsidiary Guarantors") as listed in the Registration Statement (as defined
below) in connection with certain proceedings related to the offer by Esterline
Technologies Corporation, a Delaware corporation (the "Company"), and the
Subsidiary Guarantors, to exchange the Company's 7.75% Senior Subordinated Notes
Due 2013 (the "Exchange Notes") and the related guarantees (the "Exchange
Guarantees") of the Exchange Notes by the Subsidiary Guarantors, which are being
registered under the Securities Act of 1933, as amended (the "Act"), pursuant to
a Registration Statement on Form S-4, as amended and supplemented (the
"Registration Statement"), for an equal principal amount at maturity of the
Company's outstanding 7.75% Senior Subordinated Notes Due 2013 (the "Original
Notes") and the related guarantees of the Original Notes by the Subsidiary
Guarantors. Capitalized terms used but not defined herein shall have the
meanings assigned thereto in the Registration Statement.

         In the course of our representation as described above, we have
examined, among other things, the Indenture dated as of June 11, 2003 (the
"Indenture"), among the Company, the Subsidiary Guarantors and The Bank of New
York, as trustee (the "Trustee"). We have also examined and relied on originals
or photocopies, certified or otherwise identified to our satisfaction, of all
such corporate books and records of the Company and the Subsidiary Guarantors
and such other instruments, records, certificates or other documents as we have
deemed relevant and necessary as a basis for the opinions hereinafter set forth.
In our examinations, we have assumed the genuineness of all signatures, the
authenticity of all documents submitted to us as originals and the conformity to
authentic original documents of all documents submitted to us as copies. As to
facts material to the opinions, statements and assumptions expressed herein, we
have, with your consent, relied upon oral or written statements and
representations of officers and other representatives of the Company, the
Subsidiary Guarantors and others.

         Based on the foregoing, and subject to the assumptions, limitations and
qualifications set forth herein, we are of the opinion that when:





Esterline Technologies Corporation
September 30, 2003
Page 2




         A. (i) the Registration Statement has become effective under the Act
            and the Indenture has been qualified under the Trust Indenture Act
            of 1939, as amended, and (ii) the Exchange Notes have been duly
            executed, authenticated and delivered in accordance with the
            provisions of the Indenture and issued in exchange for Original
            Notes pursuant to, and accordance with the terms of, the Exchange
            Offer as contemplated in the Registration Statement, the Exchange
            Notes will constitute legal, valid and binding obligations of the
            Company, enforceable against the Company in accordance with their
            terms; and

         B. (i) the Registration Statement has become effective under the Act
            and the Indenture has been qualified under the Trust Indenture Act
            of 1939, as amended, and (ii) the Exchange Guarantees have been
            executed in accordance with the Indenture and the Exchange Notes
            have been duly executed, authenticated and delivered in accordance
            with the provisions of the Indenture and issued in exchange for
            Original Notes pursuant to, and accordance with the terms of, the
            Exchange Offer as contemplated in the Registration Statement, the
            Exchange Guarantees will constitute legal, valid and binding
            obligations of the respective Subsidiary Guarantor, enforceable
            against such Subsidiary Guarantor in accordance with their terms;

except as such enforceability is subject to the effect of (a) bankruptcy,
insolvency, reorganization, moratorium, fraudulent conveyance or other laws
relating to or affecting creditors' rights generally (b) general principles of
equity (regardless of whether such enforceability is considered in a proceeding
in equity or at law) and (c) public policy limitations on rights to
indemnification or contribution.

         Members of our firm are admitted to the bars of the State of Washington
and the State of New York, and we do not express any opinion as to the laws of
any jurisdiction other than the laws of the State of Washington and the State of
New York and the Delaware General Corporation Law, and the federal laws of the
United States, and we express no opinion with respect to the applicability
thereto, or the effect thereon, of the laws of any other jurisdiction.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to us under the heading "Legal
Matters." In giving such consent, we do not thereby admit that we are in the
category of persons whose consent is required under Section 7 of the Act.


                                       Very truly yours,

                                       /s/ Perkins Coie LLP