# STC SA3251SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK703 consisting of Century IV autopilot or model AK703FD consisting of Century IV flight director with optional remote annuciator.
- Applied: October 29, 1977
- Status date: March 29, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/f0/79/f0791b8e87c10670ef00f391459b2728ff950dbd90fcff360d5b8aa93b2bc3a6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0938532F25BE131985256CC2000A95E1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3251SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## What the certificate says

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

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA32515W-D This certificate issued to: Century Flight Systems, Inc.

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

Original Product - Type bertificate Number: 3A24 Make: Cessna Model: A1857 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK703 consisting of Century IV Autopilot or Model AK703FD consisting of Century IV Flight Director with Optional Remote Annunciator according to Bulletin No. 832 dated 80-28-77 and Master Drawing List No. 871969 dated 10-28-77 (14 Volt Systen) or later FAA approved revision.

Limitations and Conditions: B1181ble in Landplane conf1guration only.

FAA/DAS Approved Supplemental Flight Manual, P/N 68S607-S dated 11-18-77 1s required or later FAA approved revision.

Placard P/N 13A660-2 18 required.

Date of Application: 10-29-77 Jule missued: 3-28-84 Rev181on 1 Date of Issuance: Jale umended:

11-18-77

EDERAL AVIATION Don P. Watson ( Signature ) TAMNISTRATOS 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) ( Yumber and streel) from (Name of grantor) (Print or type) (Address of grantor) ! 122175 per sequen,) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

+11 = r. 0~. 1099-262-000

## Every issue (1)

- March 29, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f0/79/f0791b8e87c10670ef00f391459b2728ff950dbd90fcff360d5b8aa93b2bc3a6)

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