# STC SA742SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK196consisting of Century II autopilot with optional automatic aileron stabilizer and radio coupler.
- Applied: October 4, 1966
- Status date: June 25, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A16](https://openairdocs.org/tcds/3A16)
- Certificate PDF: https://openairdocs.org/files/sha256/b2/e4/b2e4a06b4e9c6380ccb9ecf2f5e021f82d888a7979d03d5d88273e01b7bebb9e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/23E53A5A7771138685256CC20056A31E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA742SW

## ADs that name it (1)

- [AD 70-15-18](https://openairdocs.org/ad/70-15-18): Automatic Pilot and Automatic Aileron Stabilizer Instruments · Mitchell Industries Auto Pilot Systems Instruments. Effective Aug 31, 1970. Cited in the text

## Approved models (9)

- Raytheon Aircraft Company 56TC ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company 95-55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company 95-A55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company 95-B55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company 95-B55B (T-42A) ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company 95-C55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company A56TC ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company D55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Raytheon Aircraft Company E55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))

## 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: SA742541 This certificate issued to: Century Flight Systems, Inc.

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

Original Product - Type Certificate Number: ЗА10 Make: Beech Model: 95-55, 95-A55, 95-B55, 95-B55B, 95-C55, D55, E55, 56TC, and A56TC Description of Type Design Change: Installation of Mitchell Automatic Flight System Model AK196 consisting of Century II Autopilot with optional Automatic Aileron Stabilizer and Radio Coupler according to Bulletin No. 335, Revision 2, dated 1-7-71 and Master Drawing List No. 87A524, dated 11-10-70. Installation of Mitchell Radio Coupler Model 1C388-3 according to Bulletin No. 611, Revision 1, dated 4-16-74 and Master Drawing List No. 87A708 Revision A, dated 4-16-74.

See Continuation Sheet, Page 2, a part of this STC Compatibility of this modification with other previously approved modifications

Date of Application: October 4, 1966 Juke missue: 10-26-67; 12-8-70; 4-16-74;

Date of Issuance: . December 15, 1966 Sale unended: 6-25-84, Revision 4 FEDERAL AVIATION By Direction of the Administrator Don P. Watson (Signalure ) TOMINISTRANO Manager, Aircraft Certification Division Southwest Region (Title)

47.

**PAA FORM 8110-2 (10-68)**

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA7425W, Revision 4, dated 6-25-84 Limitations and Conditions:

FAA Approved Autopilot Flight Manual Supplement, P/N 68S168, dated 4-16-74 required with Mitchell Radio Coupler Model 1C388-3.

1. FAA Approved Placard 13A344-196 for Beech Models 95-C55, D55, and E55;

Placard 13A344-196-1 for Models 95-55, 95-A55, 95-B55, and 95-B55B;

Placard 13A344-196-2 for Models 56TC and A56TС required with Century I1 Autopilot.

FAA Approved Placard 13A322-194 for Beech Models 95-C55, D55, and E55; Placard 13A322-194-1 for Models 95-55, 95-A55, 95-B55, and 95-B55B; Placard 13A322-194-2 for Models 56TC and A56TC required with Stabilizer.

**FAA FORM B110-2-1 (10-00) PAGE 20F2 PAGES**

INSTKUCTIONS: The transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and streel) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Nunher and streel) (Cily. State, and ZIP code ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 25, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b2/e4/b2e4a06b4e9c6380ccb9ecf2f5e021f82d888a7979d03d5d88273e01b7bebb9e)

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