# STC ST09489AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: FAA Aviation System Standards AVN-300, United States
- Description: Installation of APX-119 Mode-S IFF transponder system.
- Applied: September 14, 2004
- Status date: December 17, 2004
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3EU](https://openairdocs.org/tcds/A3EU)
- Certificate PDF: https://openairdocs.org/files/sha256/a2/3b/a23b6e40b8e6c38f9b07a469a949402bf8bd441e15856f153e1dc4c496ddc2aa
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ED0BE0DD810FFEF38625715E0058D21F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST09489AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company BAe.125 Series 800A ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST09489AC-D This certificate issued to: Aviation System Standards Aircraft Maintenance and Engineering Division, AVN-300 6500 S. MacArthur Boulevard oklahoma City, OK 73169 Part 25 of the Federal Aviation Regulations.

Original Product - Jype Certificate Number: ABEU Make: Raytheon Aircraft Co.

Model: BAe. 125 Series 800A Description of Type Design Change:

Installation of APХ-119 Mode-S IFF transponder system. This alteration is to be made in accordance with data list D09489, dated December 17, 2004, or later approved FAA (DAS) revisions.

FAA approved airplane flight manual supplement, "IFF Transponder," dated December 17, 2004, is required. Compatibility of the alteration with other approved alterations is to be determined by the installer.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: September 14, 2004 Date Reissued:

Date of Issuance: December 17, 2004 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Brent Bogena (Signature) DAS Administrator (Title)

Signature of grantor (In ink):

(City, State, and ZIP Code) (Number and street) (Address of grantor) from (Name of grantor) (Print or type) (City, State, and ZIP Code) (Number and street) (Address of transferee) to (Name of transferee) Transfer the ownership of Supplemental Type Certificate Number

TRANSFER ENDORSEMENT The FAA will reissue the certificate in the name of the transferee and forward it to him.

the transfer of this Supplemental Type Certificate.

INSTRUCTIONS: The transfer endorsement below may be used to notify the appropriate FAA Regional Office of

## Every issue (1)

- December 17, 2004: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a2/3b/a23b6e40b8e6c38f9b07a469a949402bf8bd441e15856f153e1dc4c496ddc2aa)

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