# STC SA1-377

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Ellingsworth Prod CoInc, United States
- Description: Replacement of d.c. belt- driven generator and regulator with Leece-Neville belt-driven alternator with built-in silicon rectifier.
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15), [TCDS A-777](https://openairdocs.org/tcds/A-777)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/27F6E5CC8D382F9685256CC10080DB22.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-377

## ADs that name it (1)

- [AD 65-14-01](https://openairdocs.org/ad/65-14-01): Alternator Support Bracket · Replacement of d.c. belt- driven generator and regulator (Ellingsworth Prod CoInc STC SA1-377). Effective Jun 26, 1965. Named in the applicability

## Approved models (2)

- Raytheon Aircraft Company 35 Series ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company 35 Series ([TCDS A-777](https://openairdocs.org/tcds/A-777))

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