# STC SE00057AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Bell Helicopter Textron Inc., United States - Description: Installation of Aeronautical Accessories, Inc., Pc Safety Valve Kit - Applied: July 1, 1992 - Status date: May 29, 2013 - Product: Engine - Certification basis: Part 21, Part 33 - Data sheets: [TCDS E1GL](https://openairdocs.org/tcds/E1GL) - Certificate PDF: https://openairdocs.org/files/sha256/a1/2e/a12e9ec89384080f3a307b2ddcc5c8c3a00cc7f93a38f760ada0bfb50fdc240a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2B2DC4B97A59FD3B86257C1300586051.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE00057AT ## ADs that name it (0) None. ## Approved models (11) - Rolls-Royce Corporation 250-C28 ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C28B ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C28C ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30 ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30G ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30M ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30P ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30R (T703-AD-700) ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30R/1 (T703-AD-700B) ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30S ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) - Rolls-Royce Corporation 250-C30U ([TCDS E1GL](https://openairdocs.org/tcds/E1GL)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. N umber SE00057AT This certificate issued to Part 33 of the Federal Aviation R egulations . effective February 1, 1965, and amendments 33-2, 33-3, 33-4 (See Type Certificate Data Sheet) Original Product -- Type Certificate N umber : Installation of Aeronautical Accessories, Inc., “Pc Safety Valve Kit” in accordance with Aeronautical Accessories, Inc. Installation/Operation/Maintenance Instructions Report No. AA-92082 dated September 9, 1992, or later FAA approved revision. The approval of this change in type design is restricted to the engines identified above only. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. A copy of this STC must be included in the permanent records of the modified engine. This certificate and the supporting data which is the basis for appro val shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the A dministrator of the F ederal A viation A dministration. Bell Helicopter Textron, Inc. 441 Industrial Park Road Piney Flats, TN 37686 E1GL M ake : Rolls-Royce Corporation M odel : 250-C28, -C28B, -C28C, -C30, -C30G, -C30M, -C30P, -C30R, -C30S, -C30U Date of application : July 1, 1992 Date of issuance : December 16, 1992 Date reissued : May 29, 2013 Date amended : December 7, 1993 B y direction of the A dministrator (Signature) Scott A. Horn, Acting Manager, Rotorcraft Certification Office, Southwest Region FAA Form 8110-2-1(10-69) Page 2 of 2 ## Every issue (1) - May 29, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a1/2e/a12e9ec89384080f3a307b2ddcc5c8c3a00cc7f93a38f760ada0bfb50fdc240a) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.