# STC SA3247SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK618 consisting of Century IIB autopilot with optional radio coupler.
- Applied: September 6, 1977
- Status date: March 28, 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/c9/11/c9114c875b323f0ffe55070087176516a8178617e4db640d2265cd9779262cd4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1848BB8FE8D7DD2086257DA8005ACE9E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3247SW-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.

Bepartmcnt of transportation federal ablation administration Supplemental Itjipe Certificate SA3247SW-D Centiiry Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 J/i&^ufi&deAi;gbwf^Jfo o ^4fo _. . - Hello H-250, H-295, H-395, H-395A /rMe' .

Installation of Mltchcll Automatic Flight System Model AK618 consisting of a Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 744, dated 8-29-77 and Master Drawing List No. 87A963, dated 8-29-77 (14 Volt orlater FAA approved revision.

Eligible only on Helio Model H-295, S/N 1457 and Below.

Also eligible on Helio Model H-295, S/N 1457 and below when modified in accordance with STC SA156SO (Turbocharged Engine) and Heiio Model H-395 when modified in accordance with STC SA125SO (Turbocharged Engine) .

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S590, dated 9-29-77is required.

Previously approved modifications ///rt'rruusn< 4/n/^eflfef/MM/fvAtw- -u^ /n^ -^}fc(?tifntii^fa/t-^ t& Jri* <> ~<M«« 3-28-84 Revision 1 ~s && *e//tftts/tff :

Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

FAA Fon* 8110-3 (10-68)

.NSTRUCTIONS: The transfer endorse*, be.ow may be used ,o notify .he approve FAA Hepon.. Office of (he 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).

(City.State, •ml ^IP axil > from (Name of grantor) (Print or type).

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

(Gfy, Suu.

Signature of grantor (In ink):

## Every issue (1)

- March 28, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c9/11/c9114c875b323f0ffe55070087176516a8178617e4db640d2265cd9779262cd4)

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