# STC SA3-641

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sundstrand Avn Operation, United States
- Description: Corporation cabin air temperature control system.
- Status date: February 9, 1982
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8110C98022DBAA1985256CC20008CCF3.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3-641

## ADs that name it (0)

None.

## Approved models (3)

- The New Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-23-160 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

---
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.