# STC SA3046SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK524 consisting of Century IIB autopilot with optional radio coupler.
- Applied: March 3, 1975
- Status date: June 22, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/f3/09/f309d664970cdd502e1d35605a484f46eee5ace542fb095d41c1aedc7f970740
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE5AA354662DA13785256CC2000A931E.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3046SW-D

## ADs that name it (0)

None.

## Approved models (8)

- Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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.

Department of transportation —Jftdtra! Stoiation administration Supplemental l^pe Certificate SA3046SW-D t-sfa&ttiCa&G-nA'.

Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 *>eaJi+reTrit*i Civil Air —— <SsuA#:~(;}e/p£iJu-Ja&,^/liUfrivt>f 3A12 Cessna 172D, 172E, 172F, 172G, 172H, 1721, 172K and 1?2L na*' :

Installation of Mitchell Automatic Flight System Model AK524 consisting of Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 644, Revision (1), dated 5-22-75 and Master Drawing List No. 87A770, Revision A, dated 5-22-75.

FAA/DAS Approved Autopilot Flight Manual, dated 6-30-75, P/N 68S251 is required for installation °ther Previously approved modifications u fa .ta?i — /.- 6-3075; 6-22-84, Revision 2 a/r atitr raAa -' Don P. Watson Manager, Aircraft Certification Division Southwest Region (Titlt)

Thit tertijitate may bt liaiujtrrtd in aftoidante uiit/i f-AR 21.17.

The FAA Mill reissue the certificate in the nama of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Nuinber_ to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code} from (Name of" grantor) (Print or type) (Address of grantor) (Number 6 street) (City, State, and ZIP coda) Extent of Authority (if licensing agreement):

Date of Transfer;

Signature of grantor (In ink):

## Every issue (1)

- June 22, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f3/09/f309d664970cdd502e1d35605a484f46eee5ace542fb095d41c1aedc7f970740)

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