# STC ST59CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: AeroTech Designs, United States
- Description: Remove aluminum inserts in leading edge light lens assemblies and install rubber grommets with dimpled washers (DHC-8 102)
- Status date: May 10, 1993
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A13NM](https://openairdocs.org/tcds/A13NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EDD80CF76257D59585256CC3000360A4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST59CH

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier-Rotax GmbH DHC-8 ([TCDS A13NM](https://openairdocs.org/tcds/A13NM))

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