# STC SE203SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Piedmont Aviation Inc, United States
- Description: Variations in Rolls-Royce modification 636.
- Status date: January 1, 1960
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-283](https://openairdocs.org/tcds/E-283)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C66110159B4BB0CD862570D2006914AE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE203SO

## ADs that name it (0)

None.

## Approved models (1)

- Rolls-Royce Corporation Dart 511 ([TCDS E-283](https://openairdocs.org/tcds/E-283))

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