# STC ST411CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Midwest Aircraft Products, United States
- Description: Install forward lavatory panels, Models 1145, 1146, 1147.
- Status date: July 23, 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/E44FDBF9222F74FF85256CC300036001.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST411CH

## 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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