# STC ST743CH-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Duncan Aviation, United States
- Description: Installation of a single UNS-1Msp Flight Management System on EFIS equipped aircraft.
- Status date: July 17, 1998
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2E11C480DC9D6AFC85256CC300037492.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST743CH-D

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))
- The Cessna Aircraft Company 560 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))
- The Cessna Aircraft Company S550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

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