# STC SA3127SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK415 consisting of Century II B
Autopilot with Optional Radio Coupler
- Applied: February 19, 1976
- Status date: June 5, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/4a/31/4a31adc9e12672a4388695a1c73fa92ec9690780ada1feea84bea75924d2146a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/585F3848ACCD248C85256CC2000A942E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3127SW-D

## ADs that name it (0)

None.

## Approved models (7)

- Beechcraft Corporation H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation M35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation P35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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: SA31275W-D This certificate issued to: Century Flight Systems, Inc.

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

Original Product - Type bertificate Number: ЗА15 Make: Beech Model:

H35, J35, K35, M35, N35, P35, S35 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK415 consisting of Century II B Autopilot with Optional Radio Coupler according to Bulletin No. 538, Revision 1, dated 2-18-76 and Master Drawing List No. 87A647, Revision A, dated 2-18-76 Limitations and Conditions:

The following FAA/DAS Approved Airplane Flight Manual Supplements are required:

P/N 68S274, dated 3-26-76 for Beech Models K35, M35, N35 and P35; P/N 685270, dated 3-26-76 for Beech Models J35 and S35; P/N 68S273, dated 3-26-76 for Beech Model H35 This ripale and the supporting sad wich is the has is fir appreval shull mermain in effed until sur- Compatibility of this modification with other previously approved modifications vendered, suspended, veroked, or a termination date is thorwise es labdished by the Admin is brat. sf the Federal Aviation Administration .

Date of Application: 2-19-76 Jule missued: 6-05-84, Revision 1 Date of Issuance: 3-26-76 Sale unrended:

IATION By Direction of the Administrator Don P. Watson (Signalure ) TIO Manager, Aircraft Certification Division Southwest Region (Title) 47 FAA FORM 8110-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) - (Yumber and streel) (City, Stale, and 2IP code ) from (Name of grantor) (Print or type) - (Address of grantor) (Number and sireel;

Date of Transter:

Signature of grantor (In ink): - 10-R82-180

## Every issue (1)

- June 5, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4a/31/4a31adc9e12672a4388695a1c73fa92ec9690780ada1feea84bea75924d2146a)

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