# STC SA644WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Brittain Industries, Inc, United States
- Description: Installation of Brittain Dynertial Pitch Assist, Model PC-1 and optional Altitude Hold, Model AH-1
- Applied: March 9, 1964
- Status date: November 19, 2013
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 2A1](https://openairdocs.org/tcds/2A1), [TCDS A-782](https://openairdocs.org/tcds/A-782)
- Certificate PDF: https://openairdocs.org/files/sha256/13/20/13200c15ff8234273161661705fd343c0a47578cc2843de345fed5c1a549522c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A0A9B5A5006BCBE86257DCB0052BEC1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA644WE

## ADs that name it (0)

None.

## Approved models (3)

- American Navion Society Ltd. D-16 ([TCDS 2A1](https://openairdocs.org/tcds/2A1))
- American Navion Society Ltd. D-16A ([TCDS 2A1](https://openairdocs.org/tcds/2A1))
- Sierra Hotel Aero Inc. Navion (Army L-17A) ([TCDS A-782](https://openairdocs.org/tcds/A-782))

## 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 SA644WE

This certificate issued to: Brittain Industries, Inc.

3266 N. Sheridan Road Tulsa, OK 74115

Part 3of the Civil Air Regulations.

Original Product – Type Certificate Number: 782, 2A1

Make: Navion, Multitech Model: Listed on sealed Master Drawing List DP-1

Installation of Brittain Dynertial Pitch Assist, Model PC-1 and optional Altitude Hold, Model AH-1 in accordance with Brittain Industries, Inc. Installation Manual 11907-3. Brittain Autopilot installed per STC SA4-363 for Navion Series Aircraft, or SA4-920 for Universal (Temco) Series Aircraft is required with this installation.

Brittain Industries, Inc. FAA Approved Airplane Flight Manual Supplement listed on sealed Master Drawing List DP-1 or later FAA approved revision is required with this installation.

Applicable eligible aircraft models and FAA Approved Flight Manual Supplement listed on sealed Master Drawing List DP-1 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: March 9, 1964 Date reissued: November 19, 2013;

11/10/69; 11/2/72 Revision 2 Date of issuance: April 20, 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)

- November 19, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/13/20/13200c15ff8234273161661705fd343c0a47578cc2843de345fed5c1a549522c)

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