# STC SA600WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Brittain Industries, Inc, United States - Description: Installation of Brittain Industries, Inc. Model B-4 Flight Control System including Model PC-1 Pitch Assist, Model AH-1 Altitude Hold and NAV-1 Navigation Coupler - Applied: January 29, 1964 - Status date: October 28, 2013 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4) - Certificate PDF: https://openairdocs.org/files/sha256/a3/cc/a3ccca876862a3ae75c3ba317a6966e61bb2a806795d9d0086a4e11307d5c771 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BCF9E43F9CA492C186257DCC00555183.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA600WE ## ADs that name it (0) None. ## Approved models (21) - Twin Commander Aircraft LLC 560-F ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-E ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-F ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-F(P) ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-FL ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-FL(P) ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-T ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-V ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 680-W ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 681 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 685 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 690 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 690A ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 690B ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 690C ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 690D ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 695 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 695A ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 695B ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft LLC 720 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) ## 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. Number SA600WE This certificate issued to: Brittain Industries, Inc. 3266 N. Sheridan Road Tulsa, OK 74115 Part 3 of the Civil Air Regulations. Original Product – Type Certificate Number: 2A4 Make: Aero Commander Model: See Limitations and Conditions Installation of Brittain Industries, Inc. Model B-4 Flight Control System including Model PC-1 Pitch Assist, Model AH-1 Altitude Hold and NAV-1 Navigation Coupler, installed in accordance with Brittain Industries, Inc. Installation Manual 11920-9. Brittain Industries, Inc. Flight Manual Supplement listed on sealed Master Drawing List C-22 or later FAA approved revision required with this installation. Applicable eligible aircraft models and FAA Approved Airplane Flight Manual Supplement listed on sealed Master Drawing List C-22 or later FAA approved revision. 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. Date of application: January 29, 1964 Date reissued: October 28, 2013 5/21/64; 11/10/69; 11/2/72 Revision 3 Date of issuance: January 31, 1964 Date amended: Signature S. Frances Cox Title Manager, Special Certification Office, Southwest Region FAA Form 8110-2 (8/13) Page 1 **SUPPLEMENTAL TYPE CERTIFICATE, FAA FORM 8110-2 (CONTINUED)** To (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP Code) From (Name of grantor) (Address of grantor) (Number and street) (City, State, and ZIP Code) FAA Form 8110-2 (8/13) Page 2 ## Every issue (1) - October 28, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a3/cc/a3ccca876862a3ae75c3ba317a6966e61bb2a806795d9d0086a4e11307d5c771) --- 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.