# STC ST00077BO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Stead Aviation Corp, United States
- Description: Installation of dual AlliedSignal Aerospace GNS-Xls flight management systems.
- Status date: August 22, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16NM](https://openairdocs.org/tcds/A16NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C80C6BED635E571E85256CC2006A6FF2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00077BO

## ADs that name it (0)

None.

## Approved models (1)

- Israel Aircraft Industries Ltd. 1125 Westwind Astra ([TCDS A16NM](https://openairdocs.org/tcds/A16NM))

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