# STC SA181RM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Univair Aircraft Corp, United States
- Description: Installation of Lycoming Model O-360-A4A engine and Sensenich Model 76EM8-60 propeller.
- Applied: January 16, 1978
- Status date: July 11, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A6](https://openairdocs.org/tcds/1A6)
- Certificate PDF: https://openairdocs.org/files/sha256/dd/f3/ddf366dd64c002ad29686c03e10bfb76f75598a4bffc5ff3246bc53048087ee8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/87E1FFD63A44DFEC85256CC10083D120.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA181RM

## ADs that name it (0)

None.

## Approved models (5)

- Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-108 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-135 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- July 11, 1981: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/dd/f3/ddf366dd64c002ad29686c03e10bfb76f75598a4bffc5ff3246bc53048087ee8)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.