# STC SA1827SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: AlliedSignal Commercial Avionics Systems, United States
- Description: Installation of single side or dual Allied/Bendix EFS-10 electronic flight system.
- Status date: October 25, 1985
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A23SO](https://openairdocs.org/tcds/A23SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A044CB4F1106E94985256CC10083D141.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1827SO

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-42-1000 ([TCDS A23SO](https://openairdocs.org/tcds/A23SO))

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