# STC SA4-289

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Raymond M Stits, United States
- Description: BN-1 propeller spinner
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-737](https://openairdocs.org/tcds/A-737), [TCDS A-754](https://openairdocs.org/tcds/A-754)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B20819EBE2DBE1C1862570CE006AFC0F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-289

## ADs that name it (0)

None.

## Approved models (2)

- Arctic Aircraft Company Inc. S-1A Series ([TCDS A-737](https://openairdocs.org/tcds/A-737))
- Arctic Aircraft Company Inc. S-1B Series ([TCDS A-754](https://openairdocs.org/tcds/A-754))

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