# STC SA2020SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: AlliedSignal Commercial Avionics Systems, United States
- Description: Installation of Allied/Bendix Microwave Landing System MLS-21. (MU-300 Diamond I)
- Status date: December 5, 1986
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A14SW](https://openairdocs.org/tcds/A14SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4A7509624F54DB1485256CC10083D54E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2020SO

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company MU-300 ([TCDS A14SW](https://openairdocs.org/tcds/A14SW))

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