# STC SA09333AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 30 alt altitude hold system.
- Applied: January 26, 1998
- Status date: January 29, 1998
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO)
- Certificate PDF: https://openairdocs.org/files/sha256/b1/82/b1823aff2ae6242d0a1a9f0e86f510fe171359fb4a778eb02b660e36370b8991
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FF95553837CDC98985256CC1007F3A96.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09333AC-D

## ADs that name it (0)

None.

## Approved models (5)

- Piper Aircraft Inc. PA-32-301 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (HP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (SP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09333AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Cirit La Regulations.

Original Product I ype Cerlifcate Number : A3SO Make: Piper Model: PA-32-301, PA-32-301T, PA-32R-301, and PA-32R-301T Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-740, according to Bulletin No.

840, dated 1-23-98 and Master Drawing List No. 921067, dated 1-23-98 or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891647, dated 1-29-98 is required for Piper Models PA-32-301, PA-32-301T, PA-32R-301, and PA-32R-301T or later FAA Approved revisions of the above supplement.

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

saspended, revoked or a termination date iå othernse established by the vinistrator of the Sederal S viation Administration.

Date of Application: 1-26-98 Date Reissued:

Date of Issuance: 1-29-98 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Wiscon Chamen (Signature) TOMINISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

AA Form 8110-2 (10-68) Page 1 of 1

The PAA 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) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street] (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- January 29, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b1/82/b1823aff2ae6242d0a1a9f0e86f510fe171359fb4a778eb02b660e36370b8991)

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