# STC SA1989SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Blue Bell Inc, United States
- Description: Installation of Canadair Marconi CMA-771 MK II Dual Omega Navigation System.
- Status date: September 8, 1986
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A20](https://openairdocs.org/tcds/1A20)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C4BA68C10C4DA32585256CC10083D3CA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1989SO

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier Inc. CL-44D4 ([TCDS 1A20](https://openairdocs.org/tcds/1A20))

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