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.
Aircraft STC directory
Beechcraft HS.125 Series 1B-522 STCs
The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Beechcraft HS.125 Series 1B-522. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
4
listed Current at snapshot
3
holder directories
3
modification categories
Oct 16, 2017
latest recorded revision
Modification demand surface
Other aircraft modifications2
Aircraft structures1
Electrical systems1
Recently revised HS.125 Series 1B-522 STCs
Showing the 4 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
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.