# STC SA4-42

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Serv-Aero Engr Inc, United States
- Description: Engine mount for Jacobs R-755 engine.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-707](https://openairdocs.org/tcds/A-707)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E21168913E3158E3862570D000528918.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-42

## ADs that name it (0)

None.

## Approved models (1)

- Fairchild Industries Inc. 24W Series ([TCDS A-707](https://openairdocs.org/tcds/A-707))

---
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.