# STC SA1-139

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Ohio Aviation Co, United States
- Description: Windshield from a four-place to a two-piece glass.
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: TCDS 616
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EA5FD028E1CC040585256CC1007F3B8F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-139

## ADs that name it (0)

None.

## Approved models (4)

- Lockheed Aircraft Corporation 12-A (Army UC-40) (TCDS 616)
- Lockheed Aircraft Corporation 12-A (Army UC-40A) (TCDS 616)
- Lockheed Aircraft Corporation 12-A (Navy JO-1) (TCDS 616)
- Lockheed Aircraft Corporation 12-A (Navy JO-2) (TCDS 616)

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