# STC SA5355SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems, Model ST-252-40/50.
- Applied: October 19, 1984
- Status date: November 29, 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/sha256/34/bb/34bb04f81ddb7eed4cfcd2942647a1390c076778f5139d653c6e11df45da07b9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F123C692CA05DA3385256CC200122896.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5355SW-D

## 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.

l£-U4J <•<&{ - Htritri 3taw of amnita department of transportation —federal aoiation administration Supplemental "Cgpc Certificate tsuvrrvve'r' SA5355SW-D SnTEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 <2^' 4& *.£a L 1 V 1 I AIT PIPER PA-23-250 AND PA-E23-250 t —£ ^ if Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-252-40/50, according to Bulletin No. 352, dated 10-05-84 and Master Drawing List No. 92292, dated 10-05-84 and/or later FAA Approved revisions of the above data (14 Volt System).

Eligible only on Piper Models PA-23-250 and PA-E23-250, S/N 27-2000 through S/N 27-7554172.

Also eligible on the above listed Models when equipped with Approved Turbocharged Engines (250 H.P.) and/or Wing Tip Tanks per STC SA1480WE.

Continuation Sheet, Page 2, a part of this STC).^ StffdrriintA£>a£&r'*ap* 10-19-84 11-29-84 (Signature) Harold W, Holdeman DAS Staff Coordinator, DAS 5 Si-J (Title)

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llnittd &tat« of SUiKrira Bcpartment of "Cransportarion— .federal Situation administration Supplemental lEgpt Certificate(Continuation £heet) SA5355SW-D Limitations and Conditions (con't)

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89539, dated 11-29-84 for System 40 is required and/or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89540, dated 11-29-84 for System 50 is required and/or later FAA Approved revisions of the above supplement.

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

• li'-'T'i'-i.ri i,f this i iTtipC'itf is pumshablt by a jine oj not txcf'hn^ SlJiOO, or imf>r;\i:nrr.,'r:> no/ exceeding J \fiHi, "' '•• -" FdRM 8ln>2-i (10-69) 7/ill certificate ma} be trainjerrcl ir. act'Tii.ir^e :nt/i i'AR -I I' PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <7P code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP cade) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- November 29, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/34/bb/34bb04f81ddb7eed4cfcd2942647a1390c076778f5139d653c6e11df45da07b9)

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