# STC ST464SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Eastern Airlines, Inc, United States
- Description: Installation of Decca IIB 06 omnitrac area navigation system. Operations will not be predicated on use of vertical guidance information of area navigation system.
- Status date: June 29, 1971
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F3E6A4E422D7AA1885256CC300036034.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST464SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-9-31 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

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