# STC SH2621SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Hill Mr. Jamie R., United States
- Description: Modification of main rotor blades P/N 204-011-250-5 or P/N 204-011-250-113 for restricted category.
- Status date: October 30, 1998
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H13WE](https://openairdocs.org/tcds/H13WE), [TCDS H1RM](https://openairdocs.org/tcds/H1RM), [TCDS H3NM](https://openairdocs.org/tcds/H3NM), [TCDS H3SO](https://openairdocs.org/tcds/H3SO), [TCDS H5SO](https://openairdocs.org/tcds/H5SO), [TCDS H6SO](https://openairdocs.org/tcds/H6SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/70459310CF6A29ED85256CC2005C302A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH2621SO

## ADs that name it (0)

None.

## Approved models (7)

- Bell Helicopter Textron SW204 (UH-1B) ([TCDS H6SO](https://openairdocs.org/tcds/H6SO))
- Bell Helicopter Textron SW204HP (UH-1B/HP) ([TCDS H6SO](https://openairdocs.org/tcds/H6SO))
- Bell Helicopter Textron UH-1B ([TCDS H13WE](https://openairdocs.org/tcds/H13WE))
- Bell Helicopter Textron UH-1B ([TCDS H1RM](https://openairdocs.org/tcds/H1RM))
- Bell Helicopter Textron UH-1B ([TCDS H3NM](https://openairdocs.org/tcds/H3NM))
- Bell Helicopter Textron UH-1B ([TCDS H3SO](https://openairdocs.org/tcds/H3SO))
- Bell Helicopter Textron UH-1B ([TCDS H5SO](https://openairdocs.org/tcds/H5SO))

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