# STC SH984SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: US Helicopter, Inc, United States
- Description: Installation of Lycoming T5313A or B engines, replacing Lycoming T5311A engines, including minor installation changes.
- Status date: December 27, 1995
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1SW](https://openairdocs.org/tcds/H1SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3F055E255A04D66985256CC2006223BE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH984SO

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron 204B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))

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