# STC SA450GL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Butler Aviation - O'Hare, Inc, United States
- Description: Installation of a dual Canadian Marconi CMA-734 Omega navigation system.
- Status date: September 19, 1980
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5338DF55E0EBA0AA85256CC2000E3CF4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA450GL

## ADs that name it (0)

None.

## Approved models (1)

- Learjet Inc. Learjet 35A (C-21A) ([TCDS A10CE](https://openairdocs.org/tcds/A10CE))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.