# STC SA8120SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aerex Group, Inc, United States
- Description: Installation of a BKM windshield heat control monitor.
- Applied: January 14, 1991
- Status date: August 29, 1995
- 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/f3/e7/f3e74ad35e515d6b62b5df581600bc204fd8a75c7d4fd1b515b878f2ed0c7f58
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1AB8A8CFB045FB0885256CC20058E5FC.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA8120SW

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company HS.125 Series 700A ([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.

tnit - jSfefreral ^frtatum (Abmmtstratt0n SA8120SW The Aerex Group, Inc.

13853 Creekside Place Dallas, TX 75240-3553 Civil Air A3EU British Aerospace HS.125-700A others (See Limitations) Installation of a BKM Windshield Heat Control Monitor in accordance with The BKM Company Drawing List DL. 1000-125, Rev. C, dated 10/17/91, or later FAA approved revision.

This STC applicable to HS.125-700A, HS.125-600A, DH.125-1A, DH.125-3A, DH.125-400A, BH.125-400A, and BH.125-600A airplanes. Airplane Flight Manual Supplement dated October 17, 1991, or later FAA approved revision, is required. Compatibility of this modification with previously installed equipment must be determined by installer.

.' January 14, 1991 October 17, 1991 .- August 29, 1995 /WA. j. i (Signature)MerrillfrAS n Manager, Special Certification Office Southwest Region (Title)

ilt. Slalt. ami ^IP rode) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- August 29, 1995: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f3/e7/f3e74ad35e515d6b62b5df581600bc204fd8a75c7d4fd1b515b878f2ed0c7f58)

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