# STC SA1490CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Montague James J, United States
- Description: Installation of a Sensenich 74DR-1 model propeller. Limited to Tel Continental O-300A, C-145-2, or C-145-2H, or O-300B with propeller control valve secured in closed position. Model O-300C or O-300D engines with model 530860 crankshaft installed. Maximum takeoff power limited to 125 horsepower.
- Status date: August 14, 2001
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-766](https://openairdocs.org/tcds/A-766)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C7121CA0ED7C0E385256CC1008211E9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1490CH

## ADs that name it (0)

None.

## Approved models (1)

- Swift Museum Foundation Inc. GC-1B ([TCDS A-766](https://openairdocs.org/tcds/A-766))

---
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.