# STC SE01203WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Dempsay William A., United States
- Description: Installation of R-1830-94 supercharger impeller and diffuser in place of existing hardware.
- Applied: March 24, 1986
- Status date: October 22, 2003
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-230](https://openairdocs.org/tcds/E-230), [TCDS TC 5E-5](https://openairdocs.org/tcds/TC%205E-5)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/154370FEDD77A95186256DCE005B4758.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE01203WI

## ADs that name it (0)

None.

## Approved models (2)

- Pratt & Whitney Division Military R-2000 Series ([TCDS TC 5E-5](https://openairdocs.org/tcds/TC%205E-5))
- Pratt & Whitney Division Twin Wasp 2SD13-G ([TCDS E-230](https://openairdocs.org/tcds/E-230))

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