# STC SA1174SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK424 consisting of Century IV autopilot with command/electric trim or AK424/FD consisting of Century IV autopilot/flight director with command/electric trim.
- Applied: June 5, 1970
- Status date: July 9, 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/sha256/54/6b/546b5992db1d1830cab145feba2131427081a9c084ec085cd9ba62b171c9974a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/682520FF51B3574C85256CC10080DF54.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1174SW

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation 58 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 58A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))

## 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.

Department of ICransportation —.federal aoiation SldminiBtration Supplemental t^pe Certificate

•~n£&it£a&&n4>.

SA1174SW Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 rfa4iirf,/rif,n£l t 3A16 Beech 58 and 58A 3 xd J&es Civil Air Installation of Mitchell Automatic Flight System Model AK424 consisting of Century IV Autopilot with Command/Electric Trim or AK424/FD consisting of Century IV Autopilot/Flight Director with Command/Electric Trim according to Bulletin No. 547 dated 8-13-73 and Master Drawing List 87A665 dated 8-13-73.

FAA Approved Airplane Flight Manual Supplement dated August 24, 1973, is required na' June 5, 1970 September 24, 1970 Other Previous!, approved modifications £* 4-21-71; 8-24-73; 7-9-84, Revision 3 Don P. Watson Manager, Aircraft Certification Division Southwest Region Any alteration oft/its certificate is punishable by a fine of not exceeding SI ,000, or imprisonment not exceeding 3 years, or both.

**FAA FQW 1110-1 (1O-U)**

1 NS 1'RUC 1'IONS. '['he transfer endorsement Ijdovi may he used to nolil\ I hi .ipjinipriatr FA A 1' egional Of lire (if the transfer of this Supplemental Type Orlifieale I he T1 AA ^ill rcissur Ihe tcmlicatc m Lht name ul ihc [ransicrcc and lar\\iird n [o luiii.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number __ lo (Namf of transferee) (Address of transferee) ___ umbf and strfel) i City, Stall, and ZIP axli) from (Name oj grantor) (Print 01 type) (Address uj grantor) r and street) fClt). Slatt, and £IP ,odl) Extent of Authority (if licensing agreement):

Date of Transfer: __ Signature of grantor (In ink):

## Every issue (1)

- July 9, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/54/6b/546b5992db1d1830cab145feba2131427081a9c084ec085cd9ba62b171c9974a)

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