# STC SE1-344

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Airwork Corporation, United States
- Description: Redesigned propeller shaft oil transfer pipe seals.
- Status date: January 1, 1960
- Product: Engine
- Certification basis: Part 21
- Data sheets: TCDS 5E-4, TCDS 5E-5, [TCDS E-230](https://openairdocs.org/tcds/E-230)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EAE89D2CE9826C03862570D2006E7AB9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE1-344

## ADs that name it (0)

None.

## Approved models (5)

- Pratt & Whitney Division R-1830 Series (TCDS 5E-4)
- Pratt & Whitney Division R-2000 Series (TCDS 5E-5)
- Pratt & Whitney Division Twin Wasp 2SD-G ([TCDS E-230](https://openairdocs.org/tcds/E-230))
- Pratt & Whitney Division Twin Wasp 2SD1-G ([TCDS E-230](https://openairdocs.org/tcds/E-230))
- Pratt & Whitney Division Twin Wasp 2SD13-G ([TCDS E-230](https://openairdocs.org/tcds/E-230))

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