Skip to content
Avionics

STC ST02171CH

FAA DRS lists ST02171CH as Current · Issued, held by Envoy Aerospace LLC, for Raytheon Aircraft BH.125 Series 400A, Raytheon Aircraft DH.125 Series 400A, and Raytheon Aircraft HS.125 Series 400B. Recorded change: Installation of dual Innovative Solutions and Support Air Data Display Uits and dual Analog Interface Units. Snapshot dated June 30, 2026.

Share
FAA-listed holder
Envoy Aerospace LLC
Aircraft configurations
3
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

ST02171CH identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Raytheon Aircraft BH.125 Series 400A, Raytheon Aircraft DH.125 Series 400A, and Raytheon Aircraft HS.125 Series 400B. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Raytheon Aircraft BH.125 Series 400AA3EURaytheon Aircraft DH.125 Series 400AA3EURaytheon Aircraft HS.125 Series 400BA3EU

Related avionics STCs

SA2493CEAvionics

Installation of B&D Instruments & Avionics, Inc. Electronic Interturbine Temperature Indicator. Data required: (1) for the Model SF340A, B&D Instruments & Avionics, Inc. Installation Manual Part No. 7340-003-022, Revision A, dated March 13, 1989, or later FAA Approved revision; (2) for the Model SF340B, B&D Instruments and Avionics, Inc. Installation Manual Part No. 7340-003-022, Revision D, dated August 29, 1989, or later FAA Approved revision; and (3) copy of this certificate.

FAA holder: Teledyne Controls

View record
SA2494CEAvionics

Installation of B&D Instruments & Avionics, Inc. Electronic Propeller Speed Indicator. Data required: (1) for the Model SF340A, B&D Instruments & Avionics, Inc. Installation Manual Part No. 7310-003-011, dated January 23, 1989, or later FAA Approved revision; (2) for the Model SF340B, B&D Instruments and Avionics, Inc. Installation Manual Part No. 7310-003-011, Revision B, dated August 29, 1989, or later FAA Approved revision; (3) for the SF340A or SF340B, B&D Instruments & Avionics, Inc. Installation Manual Part No. 7311-004-011 dated September 12, 1989, or later FAA Approved revision; and (4) copy of this certificate.

FAA holder: Teledyne Controls

View record

FAA record reference

STC number
ST02171CH
Product
Aircraft · Large Multi-Engine
Country
United States
Application date
March 28, 2005
Revision date
July 22, 2005
CFR references
Part 21, Part 25