# STC SA878EA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ozark Airlines, Inc, United States
- Description: Installation of SFENA standby horizon indicating system.
- Status date: December 22, 1975
- 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/E30CAE66F623245985256CC20058E8FB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA878EA

## 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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