# STC ST172RM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Learjet Inc., United States
- Description: Installation of Communications Components Corp Ontrac III VLF/Omega navigation system. (LEARJET 35 serial number 005 ONLY)
- Status date: March 7, 2002
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0CD0A728E9D6D6A685256CC300035F56.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST172RM

## ADs that name it (0)

None.

## Approved models (1)

- Learjet Inc. Learjet 35 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE))

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