# STC SA85GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of auxiliary bleed air shut-off and fuselage temperature monitoring system.
- Status date: June 19, 1986
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BD30DE1D8287B06185256CC20058E851.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA85GL

## ADs that name it (0)

None.

## Approved models (2)

- Twin Commander Aircraft Corporation 690 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 690A ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

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