# STC SA3-469

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Butler Aviation - O'Hare, Inc, United States
- Description: Installation of 200-ampere generator system in aircraft with Pratt & Whitney R-1830-75 and R-1830-94 engines.
- Status date: October 19, 1982
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D5096BB4366D893C85256CC20008CC8C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-469

## ADs that name it (0)

None.

## Approved models (1)

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

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