# STC ST09243AC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: New Systems, United States
- Description: Installation of provisions for a New Systems P/N NS 20004-1 Air Call system.
- Status date: March 21, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A31SO](https://openairdocs.org/tcds/A31SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/84177FC9679FFB9185256CC300035DBE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST09243AC

## ADs that name it (0)

None.

## Approved models (3)

- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120 ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))
- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120ER ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))
- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120RT ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))

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