# STC ST444CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Mayday Avionics Inc, United States
- Description: Installation of Bendix/King TCAS II(Model CAS67A).
- Status date: November 2, 1995
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A45NM](https://openairdocs.org/tcds/A45NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/409D06A484ADCEF285256CC300036022.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST444CH

## ADs that name it (0)

None.

## Approved models (1)

- Dornier-Werke G.m.b.H. Do 328-100 ([TCDS A45NM](https://openairdocs.org/tcds/A45NM))

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