# STC SA4-83

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: McCelland William G, United States
- Description: Jacobs L4ME engine utilizing Cessna T-50 and locally fabricated components.
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 689](https://openairdocs.org/tcds/689)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEDC69FACFF2D3A986256CE2005B0B26.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4-83

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company 17 Series ([TCDS 689](https://openairdocs.org/tcds/689))

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