# STC ST09012SC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Textron Aviation Inc, United States
- Description: Installation of Honeywell MLZ-850 Microwave Landing System.
- Applied: November 28, 1994
- Status date: September 1, 2017
- 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/be/14/be14e6f1809eb40f15e7cc3571681c6a1a40bcb153031585b3391ee3e55a6fd2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/62F200B83760F04F862581CD00688B9D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST09012SC

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company BAe.125 Series 800A (C-29A; U-125) ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title ST09012SC Textron Aviation Inc.

One Cessna Boulevard Wichita, KS 67215 4b Civil Air Regulations.

Raytheon Aircraft Company BAe 125-800A 2 A3EU Installation of Honeywell MLZ-850 Microwave Landing System in accordance with Arkansas Aerospace STC Drawing List 800-142, Revision G, dated February 28, 1995, or later FAA approved revision. FAA approved Airplane Flight Manual Supplement dated March 9, 1995, or later FAA approved revision, is required.

Compatibility of this design change with previously approved modifications must be determined by the installer.

This approval is limited to Model BAe 125-800A aircraft serial number 258045 only.

September 1, 2017 November 28, 1994 March 9, 1995 Mark Fuller STC ODA administrator ODA-100129-CE

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

## Every issue (1)

- September 1, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/be/14/be14e6f1809eb40f15e7cc3571681c6a1a40bcb153031585b3391ee3e55a6fd2)

---
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.