# STC SA3246SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight model system AK617 consisting of Century III autopilot with optional radio coupler.
- Applied: September 6, 1977
- Status date: March 29, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8)
- Certificate PDF: https://openairdocs.org/files/sha256/cd/8e/cd8ed03ed13dd47f98643fc9544ae9220f33d0cef93782e7ce973ae9e73d6e40
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/99D2D411DD9575A185256CC2000A95CD.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3246SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Helio Aircraft LLC H-250 ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-295 (USAF U10D) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-395 (USAF L-28A or U-10B) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-395A ([TCDS 1A8](https://openairdocs.org/tcds/1A8))

## 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.

Bcpartmtnt of transportation—federal 2toiation administration Supplemental t^pe Certificate ^sleoM6a&& SA3246SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 ^^.^^<24l^f^ Civil Ait 1A8 Hello H-250, H-295, H-395, H-395A n&e' .' Installation of Mitchell Automatic Flight System Model AK617 consisting of a Century III Autopilot with Optional ladio Coupler according to Bulletin No. 743* dated 8-29-77 and Master Drawing List No. 87A962, dated 8-29-77 (14 Volt) or later FAA approved revision.

Eilglbie oniy on ^^0 Modei H-295, S/N 1457 and Below Also eligible on Hello Model H-295, S/N 1457 and Below when modified in accordance with STC SA156SO (Turbocharged Engine) and Helb Model H-395 when modified in accordance with STC SA125SO (Turbocharged Engine) FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S589-S dated 9-29-77 As required or later FAA approved revision.

°ther Previously approved modifications ^ date* sA< -w . Wc/rru'ri <

9.^77 3«28-84 Revision 1 -s titf -tifftSfi Don P. WatSOn (Signature) Manager, Aircraft Certification Division Southwest Region (Title)

FAA FO«M 8110-2 (10-68)

he transferee and forward il <o him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee) _ I City.State. «*/ Z' from (Name of grantor) (Print or type).

(Address of grantor) fiut ttritlj Extent of Authority (if licensing agreement):

(Glf, Suit, out ZIP a* I Date of Transfer:.

Signature of grantor (In ink):

4V •><<-. o n i«««-««»-«»o

## Every issue (1)

- March 29, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/cd/8e/cd8ed03ed13dd47f98643fc9544ae9220f33d0cef93782e7ce973ae9e73d6e40)

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