# STC SE54SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Air Carrier Eng Service Inc, United States
- Description: Rework of R-1830-94 crankcase sections 82862, 91667 and 91845 for R-1830-92 engines.
- Status date: January 1, 1960
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5E-4](https://openairdocs.org/tcds/5E-4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/940DDF47CA67DF60862570D200690FE6.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE54SO

## ADs that name it (0)

None.

## Approved models (1)

- Pratt & Whitney Division R-1830 Series ([TCDS 5E-4](https://openairdocs.org/tcds/5E-4))

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