# STC SA3271SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Kosola & Associates Inc, United States
- Description: Modification of an existing therapeutic liquid oxygen system installed by STC SA1538NM.
- Status date: June 29, 1992
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CA0AE2373BA7E1CD85256CC2000A962A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3271SO

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 500 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.