# STC SP1051EA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: UNC Accessory Service, United States
- Description: Installation of Safeway de-icer overshoe P/N 5938 and Semsa lead P/N S2002. (R212/4-30-4/ 22) (R257/4-30-4/ 60)
- Status date: April 26, 1995
- Product: Propeller
- Certification basis: Part 21
- Data sheets: [TCDS P-899](https://openairdocs.org/tcds/P-899)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/331252A49028FD7B85256CCB006019C9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SP1051EA

## ADs that name it (0)

None.

## Approved models (2)

- Dowty Rotol Ltd. R212/4-30-4/ ([TCDS P-899](https://openairdocs.org/tcds/P-899))
- Dowty Rotol Ltd. R257/4-30-4/ ([TCDS P-899](https://openairdocs.org/tcds/P-899))

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