# STC SA3035SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK501consisting of Century III autopilot with optional command automatic electric pitch trim system, radio coupler and glide slope coupler.
- Applied: December 9, 1974
- Status date: June 21, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/f1/9f/f19f3d3c3817ee6246ca62734f55f181f25eed00af0f01265b35db7f29f12e36
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CEA1C2F73E620CE485256CC2000A92FB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3035SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Beechcraft Corporation S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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.

•-/ItaaJ.a&

•Department of transportation — f tderal auiation administration Supplemental 'Cpe Certificate isKevrnvw- SA3035SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 . .

Mineral Wells, TX 76067 eait#f0rrt*#t- 3A15 Beech S35, V35A, V35B -i& Civil Air nae. :

Installation of Mitchell Automatic Flight System Model AK501 consisting of Century III Autopilot with Optional Command Automatic Electric Pitch Trim System, Radio Coupler and Glide Slope Coupler according to Bulletin No. 624, Revision 3, dated 8-12-76 and Master Drawing List No. 87A756, Revision C, dated 8-12-76.

. Also eligible on V35, V35A and V35B when modified in accordance with STC SA1035WE.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S212-2, dated 4-26-76.

Placard, P/N 13A660 is required.

th °ther Previously approved modifications -4t£r if4 12-9-74 12-1-75; 4-26-76; 8-17-76 6-21-84, Revision 4 — f Don P. Watson Manager, Aircraft Certification Division Southwest Region (Tillt) Any alteration of thit certificate is punishable by a fine of not exceeding tl ,000, or imprisonment not exceeding 3 yean, or both.

T/iii certificate may bt t'onsfnrrd in atcoidanct unlfi f-AR 21'.17.

Regional Office of the transfer of the Supplemental Type Certificate.

Tha FAA Hill reissue the certificate in tha nama of the tranafataa and forward it to him.

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, Stats, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (Tn inJt)

## Every issue (1)

- June 21, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f1/9f/f19f3d3c3817ee6246ca62734f55f181f25eed00af0f01265b35db7f29f12e36)

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