# STC SA4-158

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Devore Aviation Corp, United States
- Description: Installation (external) of two Aerojet-General 15KS-1000-A1 aircraft rocket engines (JATO) for standby thrust purposes (below fuselage directly aft of wing between fuselage Stations360 and 400).
- Status date: March 10, 1971
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-618](https://openairdocs.org/tcds/A-618), [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE3AA7489B1B7E6185256CC2000C5DBE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-158

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-3 Series ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- McDonnell Douglas Corporation DC-3 Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))

---
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.