# STC SR11253DS - Type: Supplemental type certificate - Status: Current, Issued - Holder: Bell Textron Inc., United States - Description: Installation of Auxiliary Fuel System - Applied: April 6, 2021 - Status date: February 23, 2024 - Product: Aircraft, Rotorcraft - Certification basis: Part 27 - Data sheets: [TCDS R00008RD](https://openairdocs.org/tcds/R00008RD) - Certificate PDF: https://openairdocs.org/files/sha256/02/01/0201dfa7e45df096f1eebcb35a32fc0c43a3296f777ddf513e3f1097c57446c6 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID105152540120250307042348.0001 - DRS record last changed: May 26, 2026 - Page: https://openairdocs.org/stc/SR11253DS ## ADs that name it (0) None. ## Approved models (1) - Bell Helicopter Textron Canada Limited 505 ([TCDS R00008RD](https://openairdocs.org/tcds/R00008RD)) ## 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. SR11253DS Bell Textron Inc. 441 Industrial Park Road Piney Flats TN 37686 Part 27 Title 14, Code of Federal Reguations R00008RD Bell Textron Canada Limited 505 Installation of Auxiliary Fuel System in accordance with Master Drawing List, Report No. AA-21001, Revision D, dated October 25, 2023, or later FAA approved revision. Aeronautical Accessories Rotorcraft Flight Manual Supplement, Report No. AA-21017, No Revision, dated February 15, 2024, or later FAA approved revision, is required. Aeronautical Accessories Instructions for Continued Airworthiness, Report No. AA-21016, Revision A, dated April 20, 2023, or later FAA concurred revision, is required. April 6, 2021 February 23, 2024 John T. Bouma ODA Lead administrator BTI ODA-710621-SW 4 Date o transfer: SR11253DS 4 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR11253DS Continuation Sheet 1 of 2 February 23, 2024 Limitations and Conditions (continued): This STC is applicable to all serial numbers for Bell Textron Canada Limited Model 505. 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR11253DS Continuation Sheet 2 of 2 February 23, 2024 Certification Basis: Subpart B 27.171 [27-0]; Subpart C 27.301 [27-0], 27.303 [27-0], 27.305(a) [27-0], 27.307(a) [27-26], 27.337(a) [27-26], 27.561(b)(3)(c) [27-32]; Subpart D 27.601(a) [27-0], 27.603 [27-16], 27.605(a) [27-16], 27.609 [27-0], 27.610 [27-46], 27.613(a)(d) [27-26], 27.619(b) [27-0], 27.625(a) [27-35], 27.771(a)(b) [27-0], 27.773(a)(1)(b) [27-0], 27.777 [27-0], 27.855(b)(1) [27-0], 27.863(a)(b)(d) [27-16]; Subpart E 27.951(a)(b)(1) [27-9], 27.952(a)(b)(2)(e)(f) [27-30], 27.954 [27-23], 27.955(b) [27-23], 27.959 [27-0], 27.963(a)(b)(c)(d)(e)(g) [27-30] 27.965(a)(c)(d) [27-12], 27.967(a)(b)(c) [27-30], 27.969 [27-23], 27.971 [27-23], 27.973(a)(1)(3)(b) [27-30], 27.975 [27-35], 27.993 [27-2], 27.999 [27-23], 27.1045(c)(2) [27-23], 27.1141(a)(c)(e) [27-33], 27.1183(c) [27-20], 27.1185(a)(c)(d) [27-37]; Subpart F 27.1301 [27-0], 27.1305(d)(m) [27-37], 27.1309(a)(c) [27-46], 27.1321(a)(c)(d) [27-13], 27.1322(b)(c) [27-11], 27.1337(b)(1) [27-37], 27.1351(a)(b)(1)(i) [27-13], 27.1357(a)(c) [27-13], 27.1365 [27-35], 27.1367 [27-0], 27.1381 [27-0]; Subpart G 27.1501(b) [27-14], 27.1529 [27-18], 27.1541(a)(1)(b) [27-0], 27.1543(b) [27-0], 27.1555(a)(c)(1) [27-21], 27.1557(a)(c)(1)(i)(iii) [27-11], 27.1581 [27-14], 27.1583(c) [27-16], 27.1585(a)(f) [27-21]; Appendix A A27.1 [27-18], A27.2 [27-18], A27.3 [27-18], A27.4 [27-47]. - END - 4 4 ## Every issue (1) - February 23, 2024: Issued, Current. [certificate](https://openairdocs.org/files/sha256/02/01/0201dfa7e45df096f1eebcb35a32fc0c43a3296f777ddf513e3f1097c57446c6) --- 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.