# STC SA3005SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK508 consisting of Piper autocontrol IIIB autopilot with optional radio coupler.
- Applied: June 12, 1974
- Status date: June 20, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/56/fc/56fcc71d2a4d2c8dc44869694b5a897008846222288d4dcb3af665f45d6d244c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/93F22A493568232D85256CC2000A9297.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3005SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-E23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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: SA3005SW-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, TX 76067 Part 3 of the Civil Air Regulations:

Original Product -Type berlificate Number: 1A10 Make: Piper Model: PA-23-250 and PA-E23-250 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK508 consisting of Piper AutoControl IIIB Autopilot with Optional Radio Coupler according to Bulletin No. 631, dated 6-10-74 and Master Drawing List No. 87A719, dated 6-10-74.

Limitations and Conditions: Eligible on Piper Models PA-23-250 and PA-E23-250, S/N 27-3944 and Up and PA-23-250 and PA-E23-250, S/N 27-3944 and Up when Modified in accordance with STC SA909WE. (For 14 VDC Systems Only) FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S179, dated 6-28-74 is required.

Date of Application: 6-12-74 Jute missued: 6-20-84, Revision 1 Date of Issuance: . 6-28-74 Date Amended:

FEDERAL AVIATION By divesting of Me Administrater 1012 Don P. Watson (Signature ) OHINISTRATO Southwest Region Manager, Aircraft Certification Division (Title)

FAA FoRM B110-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number 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 & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 20, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/56/fc/56fcc71d2a4d2c8dc44869694b5a897008846222288d4dcb3af665f45d6d244c)

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