# STC ST10504SC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: West Star Aviation Inc, United States
- Description: Installation of a Honeywell GNS-XLS Enhanced Flight Management System.
- Applied: July 25, 2005
- Status date: October 23, 2006
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A5EU](https://openairdocs.org/tcds/A5EU)
- Certificate PDF: https://openairdocs.org/files/sha256/a7/b7/a7b724d7224a04c61878efb55547d689807634343cfe2d784ac5608842cb769d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2CF3EF6CCEDB96E186257C4400692831.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST10504SC

## ADs that name it (0)

None.

## Approved models (2)

- British Aerospace Airbus Limited BAC 1-11 200 Series ([TCDS A5EU](https://openairdocs.org/tcds/A5EU))
- British Aerospace Airbus Limited BAC 1-11 400 Series ([TCDS A5EU](https://openairdocs.org/tcds/A5EU))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (2)

- October 23, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a7/b7/a7b724d7224a04c61878efb55547d689807634343cfe2d784ac5608842cb769d)
- April 24, 2006: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/1a/2e/1a2e0c12d088bfc1d33bffcbf0a12cc45834e24c9d45d2dda98bb80033d6ccb4)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.