# STC SP8715SW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Schweis Robert W, United States
- Description: Installation of a 'R S W' blade thrust bearing assembly in all D-shank blades of counterweight type propellers. (2D 30) (23D 40) (12D 40) (22D 40) (3D 450) (24D 50)
- Status date: May 24, 1994
- Product: Propeller
- Certification basis: Part 21
- Data sheets: TCDS 249, [TCDS P-206](https://openairdocs.org/tcds/P-206), [TCDS P-257](https://openairdocs.org/tcds/P-257), [TCDS P-719](https://openairdocs.org/tcds/P-719), [TCDS P-736](https://openairdocs.org/tcds/P-736), [TCDS P-784](https://openairdocs.org/tcds/P-784)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C28D4A608F13F9A985256CC20062241B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SP8715SW

## ADs that name it (0)

None.

## Approved models (6)

- Hamilton Standard Division 12D ([TCDS P-257](https://openairdocs.org/tcds/P-257))
- Hamilton Standard Division 22D ([TCDS P-736](https://openairdocs.org/tcds/P-736))
- Hamilton Standard Division 23D ([TCDS P-719](https://openairdocs.org/tcds/P-719))
- Hamilton Standard Division 24D ([TCDS P-784](https://openairdocs.org/tcds/P-784))
- Hamilton Standard Division 2D ([TCDS P-206](https://openairdocs.org/tcds/P-206))
- Hamilton Standard Division 3D (TCDS 249)

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