# STC ST5493NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Avtech Corporation, United States
- Description: Installation of Coltech SELCAL.
- Status date: March 2, 2001
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1NM](https://openairdocs.org/tcds/A1NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A8984DB2F540287E85256CC30003607A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST5493NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 767 ([TCDS A1NM](https://openairdocs.org/tcds/A1NM))

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