# STC SA3423SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Century automatic flight system Model AK926 consisting of a Century 31 autopilot.
- Applied: June 14, 1984
- Status date: June 14, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/d1/d9/d1d9bce5aa3c2c39e431c5f591893dee9c14271b50072f1608bce3e6136fcb1d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/991E29347523D42885256CC2000A97EB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3423SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company P210N ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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.

United #tatu of America Bepartment of ^transportation —jfederal aoiation Administration Supplemental ^upc Certificate tSKtvmvew SA3423SW-D Century Flight Systems, Inc.

P.M. 1195 P.O. Box 610 Mineral Wells, TX 76067 3 ^4/i* Civil Air .tautattv 3A21 CESSNA P210N .,: Installation of Century Automatic Flight System , Model AK926, Consisting of a Century 31 Autopilot per Bulletin No, 1056, dated 4-9-84, and Master Drawing List No. 87A1135 dated 4-9-84.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S967, dated 5-16-84, is required.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

6< ,t 6-14-84 L/ 6—14—84 J * (Signature) WILLIAM L,w JOHNS DAS Staff Coordinator, DAS 7 SW————————————(Tltte)————————

FAX foui 8110-2 (10-68)

INSTRUCTIONS: The tranrfcr endowment below may be used ,o notify .he appropriate FAA Regional Office of i he tranifer of thit Supplemental Type Certificate.

The FAA will reitsue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer die ownership of Supplemental Type Certificate Number to (Name of transferee)_ (Address of transferee). (,Viim&rr md street) from (Name of grantor) (Print or type).

(Address of grantor) (Cify. Suit. *»d ZIP f^l Extent of Authority (if licensing agreement): _ Date of Transfer:.

Signature of grantor (In ink):

## Every issue (1)

- June 14, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d1/d9/d1d9bce5aa3c2c39e431c5f591893dee9c14271b50072f1608bce3e6136fcb1d)

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