# STC SA5944NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aero Air Inc, United States
- Description: Replace Lycoming model GSO-480-A246 engine with Lycoming model GSO-480-B2C6
- Applied: April 5, 1993
- Status date: May 7, 1993
- Product: Aircraft
- Certification basis: Part 21
- Data sheets: [TCDS A-813](https://openairdocs.org/tcds/A-813)
- Certificate PDF: https://openairdocs.org/files/sha256/51/4e/514e145cfb3e3542897e797c855572a66a8160e817448f9e18b5e22ac43cd89c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CF0B2447461D6C08862579BB0076348D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5944NM

## ADs that name it (0)

None.

## Approved models (1)

- Piaggio & C. P.136-L2 ([TCDS A-813](https://openairdocs.org/tcds/A-813))

## 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: SA594ANM This certificate issued to: Aero Air, INC.

Purt 10 of the CiVil Air Regulations.

Original Product - Type Certificate Number: A-813 Make: Piaggio Model: P. 136-L2 Description of Type Design Change: Replace Lycoming model G50-480-A2A6 engine with Lycoming model GSO-480-B2C6. (This approval is predicated on the prior approval of installation of a GSO-480-A2A6 engine by form 337 on August 6, 1966.)

Limilalins andbunditions: Data pertaining to this modification are considered inadequate for other aircraft. This approval is limited to the installation in Model P. 136-L2 aircraft, Serial No. 224, R/N N359, only. A copy of this Certificate, continuation sheet, and FAA Approved Flight Manual Supplement dated May 7, 1993, must be maintained as part of the permanent records for the modified aircraft.

May T, 1993 FEDERAL AVIATION By direchin of the Adme mistrater 201- (Signature) Manager, Special Certification Branch Seattle Aircraft Certification Office (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA5944NM Limitations and Conditions: (Continued):

The conditions and limitations of the Type Certificate Data Sheet No. A-813 apply except where superseded by the following:

Engine: Lycoming GSO-480-B2C6 Propeller: Hartzell HC-83XF-3AL/L9333CH-5 Pitch limits at 30 inch station:

reverse = 19.3 degrees feathered = 33.0 degrees Tow = 18 degrees Required Placards: Adjacent to tachometer:

"DO NOT EXCEED 1500 RPM IN REVERSE" Adjacent to reversing controls:

"REVERSE PROPELLERS FOR WATER TAXI OPERATION ONLY"

- END-

**FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES FAA AC 82-03578**

## Every issue (1)

- May 7, 1993: Issued, Current. [certificate](https://openairdocs.org/files/sha256/51/4e/514e145cfb3e3542897e797c855572a66a8160e817448f9e18b5e22ac43cd89c)

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