ST01085WISafety and emergency equipment
Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS) (with/without optional Avidyne Flight Max 800 MFD).
FAA holder: Blackhawk Aerospace Technologies Inc.
Aircraft STC directory
Beechcraft HS.125 Series 400B/1 STCs
The Jun 30, 2026 FAA DRS snapshot contains 6 selected supplemental type certificates with status Current whose public applicability data names the Beechcraft HS.125 Series 400B/1. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
6
listed Current at snapshot
5
holder directories
5
modification categories
May 18, 2021
latest recorded revision
Modification demand surface
Other aircraft modifications2
Safety and emergency equipment1
Cargo and special mission1
Aircraft structures1
Electrical systems1
Recently revised HS.125 Series 400B/1 STCs
Showing the 6 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST02068CHCargo and special mission
Install air ambulance conversion.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
ST01228WIAircraft structures
Replacement of OEM window pane assemblies with Lee Aerospace laminated window assembly and termination of OEM dry air system.
FAA holder: Lee Aerospace, Inc.
ST01809LAElectrical systems
Installation of Hawker PN 9750W0640 Sealed Lead Acid Battery.
FAA holder: Securaplane Technologies
SA1185SOOther aircraft modifications
Replace existing batteries with 2371, 2376 or 23491 nickel-cadmium batteries.
FAA holder: Aviall Services, Inc.
ST1003SOOther aircraft modifications
Replace existing lead-acid batteries with Gill BB638/T1-E lead acid batteries, part numbers BSI 200 left and BSI 200 right.
FAA holder: Aviall Services, Inc.