# STC SP8470SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Schweis Robert W, United States
- Description: Installation of counterweight bearings and shaft assembly kit C.P. 22000. (3D 40)
- Status date: November 18, 1992
- Product: Propeller
- Certification basis: Part 21
- Data sheets: [TCDS 249](https://openairdocs.org/tcds/249)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8ECE86B0785A6F5385256CC20062241A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SP8470SW

## ADs that name it (0)

None.

## Approved models (1)

- Hamilton Standard Division 3D ([TCDS 249](https://openairdocs.org/tcds/249))

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