# STC SR11251DS - Type: Supplemental type certificate - Status: Current, Amended - Holder: Bell Helicopter Textron Inc., United States - Description: Installation of Human External Cargo (HEC) Hoist - Applied: May 10, 2016 - Status date: June 15, 2022 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 29 - Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW) - Certificate PDF: https://openairdocs.org/files/sha256/ad/f5/adf5d2778e3ce0df09538336a46311c20a065d65b03c2390e28cbc7ba84b236d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/62910A439E042EDB86258899005818B1.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR11251DS ## ADs that name it (0) None. ## Approved models (1) - Bell Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) ## 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. SR11251DS Bell Textron Inc. 441 Industrial Park Road Piney Flats TN 37686 Part 29 of Title 14, Code of Federal Regulations H4SW Bell Textron Inc. 412EP Installation of Human External Cargo (HEC) Hoist in accordance with Master Drawing List, Report No. AA-15035, Revision E, dated October 9, 2020, or later FAA approved revision. Description of Type Design Change continued. See Continuation Sheet 1. This STC is applicable to all serial numbers for Bell Textron Inc. Model 412EP. Limitations and Conditions continued. See Continuation Sheet 2. May 10, 2016 April 23, 2021 June 15, 2022 John T. Bouma ODA Lead administrator BTI ODA-710621-SW 5 Date o transfer: SR11251DS 5 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR11251DS Continuation Sheet 1 of 3. 06/15/2022 Description of Type Design Change (continued): Aeronautical Accessories Rotorcraft Flight Manual Supplement, Report No. AA-15037, No Revision, dated April 19, 2021, or later FAA approved revision, is required for 412EP aircraft, serial numbers 36087-36999. Aeronautical Accessories Rotorcraft Flight Manual Supplement, Report No. AA-15052, Revision A, dated May 12, 2022, or later FAA approved revision, is required for 412EP aircraft, serial numbers 37002-subsequent or with STC SR09600RC (Bell BasiX-Pro Glass Cockpit and Pratt & Whitney Canada PT6T-9 Engines) installed. Aeronautical Accessories Instructions for Continued Airworthiness, Report No. AA-15036, Revision B, dated August 17, 2021, or later FAA accepted revision, is required. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR11251DS Continuation Sheet 2 of 3. 06/15/2022 Limitations and Conditions (continued): 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: SR11251DS Continuation Sheet 3 of 3. 06/15/2022 Certification Basis: Subpart B 29.141(b)(c) [29-0], 29.143 [29-3], 29.171 [29-0], 29.173 [29-0], 29.175 [29-0], 29.177 [29-24], 29.251 [29-0]; Subpart C 29.301 [29-0], 29.303 [29-0], 29.305(a) [29-0], 29.307(a) [29-0], 29.337(a) [29-30], 29.341 [29-0], 29.351 [29-0], 29.549 [29-0], 29.561(b)(3)(c)(d) [29-0], 29.571(a)(4)(b)(c)(d) [29-20]; Subpart D 29.601(a) [29-0], 29.603 [29-0], 29.605 [29-0], 29.609(a) [29-0], 29.610 [29-53], 29.611 [29-0], 29.613(a)(d) [29-30], 29.619(b)(1) [29-0], 29.625(a)(c) [29-0], 29.771(a) [29-24], 29.773(a)(2) [29-3], 29.777 [29-0], 29.785(a)(c)(e) [29-0], 29.853(a)(2) [29-23], 29.865(a)(b)(c)(1)(3)(5)(6)(d)(e)(f) [29-43]; Subpart F 29.1301 [29-0], 29.1309(a)(b)(c)(d)(g)(h) [29-40], 29.1322(b)(c)(d) [29-12], 29.1351(a)(1) [29-42], 29.1353(a)(b) [29-15], 29.1357(a)(c) [29-24]; Subpart G 29.1501 [29-15], 29.1503 [29-0], 29.1505(a) [29-3], 29.1517 [29-24], 29.1523 [29-0], 29.1525 [29-24], 29.1527 [29-15], 29.1529 [29-20], 29.1541 [29-0], 29.1555(a)(d)(2) [29-24], 29.1561(c) [29-0], 29.1581 [29-15], 29.1583(a)(c)(e)(f)(h)(i) [29-24], 29.1585(a) [29-24]; Appendix A A29.1 [29-20], A29.2 [29-20], A29.3 [29-20], A29.4 [29-54]; Appendix B B29.3 [29-21], B29.4(a)(b)(1)(3)(c)(1)(d)(1)(e)(f) [29-21], B29.5 [29-21], B29.6 [29-21], B29.8(c) [29-40]. - END - 5 5 ## Every issue (3) - June 15, 2022: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ad/f5/adf5d2778e3ce0df09538336a46311c20a065d65b03c2390e28cbc7ba84b236d) - June 15, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ad/f5/adf5d2778e3ce0df09538336a46311c20a065d65b03c2390e28cbc7ba84b236d) - April 23, 2021: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/f6/c3/f6c38b8af29ea951e380e2efed5ee3331ca7796425d50ea8c87003e6bd703518) --- 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.