# STC SA5-28

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Innovations, LLC, United States
- Description: Lycoming O-290-D2 engine and Sensenich M76AM-2 propeller installed.
- Applied: May 1, 1961
- Status date: September 11, 2009
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780)
- Certificate PDF: https://openairdocs.org/files/sha256/13/90/13909ada0c24db50af1aa9e4dc98fc4470c9f9146d2597c9241afa7e4fdfd427
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/056C9ABF2EC315CC8625763900543601.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5-28

## ADs that name it (0)

None.

## Approved models (1)

- FS 2003 Corp. PA-12S ([TCDS A-780](https://openairdocs.org/tcds/A-780))

## 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.

This certificate issued to Aircraft Innovations, LLC PO Box 110164 Anchorage, AK 99511

Part 3 of the Civil Air Regulations.

Original Product — Type Certificate Number: 780 Make: Piper Model: PA-12S

Description of Type Design Change: Lycoming O-290-D2 engine and Sensenich M76AM-2 propeller installed per F.A. Shaw Instruction Sheets 2805M, 2805-4, -5, and -6, and drawings 54338-12, -17, -18, and -19; Piper PA-18 flaps installed per Piper drawing 14394 and F.A. Shaw Instruction Sheet 2805M and drawing 54338-15; Baggage compartment per F.A. Shaw drawing 54338-13; Elevator control cable per F.A. Shaw drawing 54338-14; Battery and inspection door relocated per F.A. Shaw drawings 54338-16, -16a.

1. Data pertaining to this modification are considered inadequate for duplication in other aircraft.

2. This approval is limited to the installation of Lycoming O-290-D2 engine, Sensenich M76AM-2 propeller, PA-18 flaps, baggage compartment, elevator control cable, and battery and inspection door on Piper PA-12S, S/N 1258, R/N N2805M, only.

3. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application: May 1, 1961 Date reissued : July 25, 1971; May 7, 1979;

August 17, 2009; September 11, 2009

Date of issuance: May 24, 1961 Date amended : September 11, 2009

( Signature) David D. Swartz Acting Manager, Anchorage Aircraft Certification Office

( Title)

## Every issue (2)

- September 11, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/13/90/13909ada0c24db50af1aa9e4dc98fc4470c9f9146d2597c9241afa7e4fdfd427)
- May 7, 1979: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/34/4d/344dd4527ee9898e5df8d6e7a41d196f6ff8763f0e620b2033ef1b790df01dd1)

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