# STC SH299NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: San Diego Helicopter Service, Inc., United States
- Description: Modification of gears and shafts.
- Status date: February 28, 1985
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9CCC5C90DCE2591285256CC2005C30C6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH299NM

## ADs that name it (0)

None.

## Approved models (4)

- MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HM ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HS ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))

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