# STC SA2634SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Jet Aviation Associates, Ltd, United States
- Description: Installation of a Collins ALT-55 radio altimeter system and Kollsman/TDC Type 522 servo altimeter, radio barometric system with type995 radio altimeter converter with voice terrain advisories.
- Status date: October 13, 1989
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/73D6D18B84050E0285256CC20008C6B2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2634SO

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-1159 ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

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