# STC ST440CH-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Duncan Aviation, United States
- Description: Installation of Collins TCAS-94 (TCAS II) system, with Dual Collins TDR-94D Mode S Transponders.
- Status date: February 2, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A7EU](https://openairdocs.org/tcds/A7EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/196D5140160259DE85256CC30003601D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST440CH-D

## ADs that name it (0)

None.

## Approved models (1)

- Dassault-Aviation Mystere-Falcon 200 ([TCDS A7EU](https://openairdocs.org/tcds/A7EU))

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