# STC SR00145IB - Type: Supplemental type certificate - Status: Current, Issued - Holder: Transwest Helicopters Ltd., Canada - Description: Installation of LH and RH Vertical Reference Door(s) - Applied: October 23, 2023 - Status date: October 27, 2023 - Product: Aircraft, Rotorcraft - Certification basis: Part 29 - Foreign approvals: TCCA SH07-20 Issue 3 - Data sheets: [TCDS H1SW](https://openairdocs.org/tcds/H1SW), [TCDS H4SW](https://openairdocs.org/tcds/H4SW), [TCDS H6SW](https://openairdocs.org/tcds/H6SW) - Certificate PDF: https://openairdocs.org/files/sha256/93/f2/93f25b910cd581d5a99542cf631724bc1bf0d24a1237c49dd1252079d5deaed4 - Approved model list and other attachments: [SR00145IB_AML.pdf](https://openairdocs.org/files/sha256/6c/e1/6ce16902b59da68c923841a2e6c807cd7d1a78ee9ebfbe083181d2944a638729) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140206182020231031174058.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR00145IB ## ADs that name it (0) None. ## Approved models (7) - Bell Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412CF ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Erickson 214 Holdings LLC 214B ([TCDS H6SW](https://openairdocs.org/tcds/H6SW)) - Erickson 214 Holdings LLC 214B-1 ([TCDS H6SW](https://openairdocs.org/tcds/H6SW)) ## 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. IMPORT SR00145IB Transwest Helicopters Ltd. 5855 Airport Street Oliver, British Columbia Canada V0H 1T0 Part 29 Title 14 Code of Federal Regulations *See attached FAA Approved Model List (AML) No. SR00145IB *See attached FAA AML No. SR00145IB *See attached FAA AML No. SR00145IB 1. Installation of LH and RH Vertical Reference Door(s) must be in accordance with Transwest Helicopters Ltd. Master Data List as shown on the attached FAA Approved Model List (AML) No. SR00145IB. 2. Operation must be in accordance with Transwest Helicopters Ltd. Flight Manual Supplements as shown on the attached FAA Approved Model List (AML) No. SR00145IB. 3. Maintenance must be in accordance with Transwest Helicopters Ltd. Instructions for Continued Airworthiiness as shown on the attached FAA Approved Model List (AML) No. SR00145IB. 1. 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. (See continuation sheet 3) October 23, 2023 October 27, 2023 Anthony E. Gallo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3 **IMPORT SR00145IB SR00145IB 3** IMPORT SR00145IB Date of Issuance: October 27, 2023 2. The installer must determine whether this design change is compatible with previously approved modifications. 3. For Bell 412 and 412EP Models, this STC is limited to Serial Number ranges from 33001 to 33213 and from 36001 to 36999. 4. This STC is applicable to all serial numbers for all other Makes-Models. 5. Approved Force Trim and Cargo Release switches must be mounted on the left (co-pilots) cyclic. 6. Flight instrumentation on the left instrument panel to be installed per Bell SI 205-3 or SI 205-43, SI 212-1, SI 214-4 or SI 412-10 with the torque meter and tachometer subsequently removed from the LH instrument panel and installed in the Vertical reference door. 7. Bell Dual Flight controls must be installed per Bell SI 205-1, SI 212-4, SI 214-5 or SI 412-13. 8. Approved LH pedal operated mechanical cargo release is required. 9. For aircraft equipped with AFCS (Automatic Flight Control System), an approved AFCS release switch must be installed on the LH cyclic. 10. A copy of this certificate and the FAA Approved Model List (AML) No. SR00145IB, issued October 27, 2023, must be maintained as part of the permanent records for the modified aircraft. ----------END---------- 3 3 ### SR00145IB_AML.pdf FAA APPROVED MODEL LIST (AML) No. SR00145IB TRANSWEST HELICOPTERS LTD. FOR INSTALLATION of LH and RH VERTICAL REFERENCE DOOR(s) Page 1 of 2 Issue Date: October 27, 2023 **CONFIG MAKE MODEL CERT BASIS TCDS REQUIRED DOCUMENTATION INITIAL** **APPROVAL DATE** **AMENDED** **DATE MASTER DATA LIST** **FLIGHT MANUAL** **SUPPLEMENT** **INSTRUCTIONS FOR** **CONTINUED** **AIRWORTHINESS** 1. Bell Textron Inc. 205A-1 FAR Part 29 at Amendment 1-9 and 11 H1SW Rev. 27 4/20/2020 Installation of LH and RH Vertical Reference Door(s) must be in accordance with Transwest Helicopters Ltd. Master Data List 223-MDL-001, Revision 4, Transport Canada Civil Aviation (TCCA) approved June 1, 2023, or later TCCA approved revision. Operation must be in accordance with Transwest Helicopters Ltd. Flight Manual Supplement 223- FMS-205, Revision 0, TCCA approved May 3, 2007, or later TCCA approved revision. Maintenance must be in accordance with Transwest Helicopters Ltd. Instructions for Continued Airworthiness REPORT No. 223-ICA-001, Revision 3, TCCA accepted June 1, 2023, or later TCCA accepted revision. October 27, 2023 N/A 2. Bell Textron Inc. 212, 412, 412CF, 412EP * H4SW Rev. 39 10/21/2022 For Bell 212: Operation must be in accordance with Transwest Helicopters Ltd. Flight Manual Supplement 223- FMS-212, Revision 1, TCCA approved May 23, 2023, or later TCCA approved revision. For Bell 412, 412CF & 412EP: Operation must be in accordance with Transwest Helicopters Ltd. Flight Manual Supplement 223- FMS-412, Revision 1, TCCA approved May 23, 2023, or later TCCA approved revision. 3. Erickson 214 Holdings, LLC 214B, 214B-1 Per TCDS H6SW H6SW Rev. 8 7/7/2021 Operation must be in accordance with Transwest Helicopters Ltd. Flight Manual Supplement 223- FMS-214, Revision 0, TCCA approved May 03, 2007, or later TCCA approved revision. FAA APPROVED MODEL LIST (AML) No. SR00145IB TRANSWEST HELICOPTERS LTD. FOR INSTALLATION of LH and RH VERTICAL REFERENCE DOOR(s) Page 2 of 2 Issue Date: October 27, 2023 *Certification Basis: Based on title 14 Code of Federal Regulations (CFR) 21.115 and 21.101, and the FAA policy for design changes that are identif ied as not significant in FAA Order 8110.48, the type certification basis for the modified Bell Textron Inc. 212, 412, 412CF and 412EP models is as follows: a. The type certification basis for the Bell Textron Inc. 212, 412, 412CF and 412EP models as shown on Type Certificate Data Sheet (TCDS) H4SW for parts not changed or not affected by the change. b. The type certification basis for the Bell Textron Inc. 212, and 412 models for parts changed or affected by the change is FAR Part 29 at Amendment 1-9 and 11. c. The type certification basis for the Bell Textron Inc. 412CF and 412EP model s (serial numbers 36087 through 36999) for parts changed or affected by the change is FAR Part 29 at Amendment 1-9 and 11 with the following exceptions: 14 CFR Part 29.1305 at Amendment 29-10 14 CFR Part 29.1353 at Amendment 29-14 14 CFR Part 29.177 at Amendment 29-24 FAA Approved: Anthony E. Gallo Manager, International Validation Branch (AIR-730) Compliance & Airworthiness Division Aircraft Certification Service ## Every issue (1) - October 27, 2023: Issued, Current. [certificate](https://openairdocs.org/files/sha256/93/f2/93f25b910cd581d5a99542cf631724bc1bf0d24a1237c49dd1252079d5deaed4), [SR00145IB_AML.pdf](https://openairdocs.org/files/sha256/6c/e1/6ce16902b59da68c923841a2e6c807cd7d1a78ee9ebfbe083181d2944a638729) --- 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.