# STC SA1571SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK382 consisting of Piper auto- control IIIB with optional radio coupler.
- Applied: October 19, 1972
- Status date: July 13, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/39/56/39568bf70bbae76b0d9936856a0655d589d1da93adc53354a4e2945fec16a37e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/89707F48A78DCF3885256CC10082138F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1571SW

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-E23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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.

Btpartmcnt of ^transportation —federal aoiation administration Supplemental t^pe Certificate SA1571SW fSleatda&f Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 4faJufi&J^faM^^4foJe>f(eM><&wywwt£w Ciyil Air 1A10 Piper PA-23-250, PA-E23-250 Installation of Mitchell Automatic Flight System AK382 consisting of Piper AutoControl IIIB with optional Radio Coupler according to Bulletin No. 503 dated 8-3-72 and Master Drawing List 87A616 dated 10-19-72.

Installation of Mitchell Radio Coupler Model 1C388-3 according to Bulletin No. 611 Revision (1) dated 4-16-74 and Master Drawing List 87A708 Revision A dated 4-16-74.

FAA Aproved Airplane Flight Manual Supplement Hated December 18, 1972, is required.

FAA Approved Airplane Flight Manual Supplem-.nt P/N 68S167 dated April 16, 1974 is required for Mitchell Radio Coupler Model 1C388-3.

Piper Model PA-E23-250 must have 28 Volt electrical system to be eligible for this modification.

-watm'rtit/pa/t f i October 19, 1972 December 18, 1972 4-16-74; 7_i3_84) Revision 2 ^f Off MtttfttffHf - Don P. Watson Manager, Aircraft Certification Division Southwest,Region (Titlt) ————T~~————'———————'———~~—.-...—————•'- •— •' '——————————————'——— —————-—————————————————————'———'————————————————————————"•"•———————————————*•——————'——————————————————— This certificate may be lianiferrtd in accoidamr with hAR 21.47.

.»l IO-J(1O-4I)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) i and Mtfl) . Slate, and ZIP l from (Name of grantor) (Print or type) (Address of grantor) r and ttrtelf . Suu. and £IP itdt!

Signature of grantor (In ink):

**C FAA AC 69-5336**

## Every issue (1)

- July 13, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/39/56/39568bf70bbae76b0d9936856a0655d589d1da93adc53354a4e2945fec16a37e)

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