# STC SA3131SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Chalk's International Airlines, Inc, United States
- Description: Installation of a Fairchild cockpit voice recorder.
- Status date: September 25, 1991
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-783](https://openairdocs.org/tcds/A-783)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CAC74A07A86E2F8D85256CC2000A9443.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3131SO

## ADs that name it (0)

None.

## Approved models (1)

- Frakes Aviation G-73 ([TCDS A-783](https://openairdocs.org/tcds/A-783))

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