# STC SA633SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Riley Turbostream Corp, United States
- Description: Installation of electrically heated windshield.
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-816](https://openairdocs.org/tcds/A-816)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E4443C0A86CA7AC2862570D2004FF56D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA633SO

## ADs that name it (0)

None.

## Approved models (1)

- The de Havilland Aircraft Co. Ltd (England) DH 114 Heron ([TCDS A-816](https://openairdocs.org/tcds/A-816))

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