# STC ST09635SC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Schwartz Engineering Co, United States
- Description: Installation of a Dual GNS-XLS System.
- Status date: February 13, 2001
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/61602103EF257C7985256CC300035E90.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST09635SC

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300B ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.