# STC SA3277SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Superior Avionics, United States
- Description: Installation of VHF NAV antennas.
- Status date: July 7, 1992
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A6](https://openairdocs.org/tcds/6A6)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BC150F3F5BDDC8A685256CC2000A9639.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3277SO

## ADs that name it (0)

None.

## Approved models (2)

- Tracor Flight Systems Inc. 340 ([TCDS 6A6](https://openairdocs.org/tcds/6A6))
- Tracor Flight Systems Inc. 440 Military C-131E ([TCDS 6A6](https://openairdocs.org/tcds/6A6))

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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.