# STC SA1275SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Piedmont Aviation Inc, United States
- Description: Installation of shoulder harness restraint system at ovserver's station in cockpit.
- Status date: September 23, 1981
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1PC](https://openairdocs.org/tcds/A1PC)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/272B40DF62CA236385256CC10080E137.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1275SO

## ADs that name it (0)

None.

## Approved models (1)

- Mitsubishi Heavy Industries Ltd. YS-11 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))

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