# STC SA3225SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK704 consisting of Century IIB autopilot with optional radio coupler.
- Applied: July 1, 1977
- Status date: December 7, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-782](https://openairdocs.org/tcds/A-782)
- Certificate PDF: https://openairdocs.org/files/sha256/ed/b0/edb03f5379e8dfc37ec64a7136756b0ab91f40e6033ba08f64f8975ea14cb142
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74574276F7C418BE85256CC2000A9585.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3225SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Sierra Hotel Aero Inc. Navion G ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion H ([TCDS A-782](https://openairdocs.org/tcds/A-782))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Hamiced States of Aucrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA322558-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, TX 76067 Part 3 of the CIV11 A1r Regulations.

Original Product -Type bentificater Numben: A-782 Make: Navion Model: G. H Description of Type Design Change:

FAA approved revision.

FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S567 dated 7/13/77 18 required Compatbility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 7/1/77 Jute missued: 12/7/83 Revision 1 Date of Issuance: 7/13/77 Sale umended:

EDERAL AVIATION in the Sildministrater Don P. Watson (Signature ) OMINISTRATO Manager, Aircraft Certification Division Southwest Region (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) _ (Address of transferee) (1301g5 pro sequens") from (Name of grantor) (Print or type) (Address of grantor) (Number and sireel;

(spoo d12 price sons' 10) Extent of Authority (if licensing agreement):

Date of Transfer: - Signature of grantor (In ink): - + 11 = r. 0 ~. 1990-282-180

## Every issue (1)

- December 7, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ed/b0/edb03f5379e8dfc37ec64a7136756b0ab91f40e6033ba08f64f8975ea14cb142)

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