# STC SP766SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Whiteface Aviation Co, United States
- Description: Modify from two position to constant speed.
- Status date: January 1, 1960
- Product: Propeller
- Certification basis: Part 21
- Data sheets: [TCDS P18EA](https://openairdocs.org/tcds/P18EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5862FB36C7DA5873862570C2006188B7.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SP766SW

## ADs that name it (0)

None.

## Approved models (1)

- McCauley Propeller Systems 2D34CT ([TCDS P18EA](https://openairdocs.org/tcds/P18EA))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.