# STC SA137NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Collins Radio Group, United States
- Description: Installation of Collins AP-107 low profile automatic flight control system (FCS), including yaw damper system.
- Status date: December 12, 1974
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/975A23FDC881200C85256CC100820FF3.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA137NW

## ADs that name it (0)

None.

## Approved models (4)

- The Cessna Aircraft Company 310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company T310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company T310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

---
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.