ST00151BOOther aircraft modifications
Installation of Honeywell CAS-67A TCAS II software change 7.0.
FAA holder: Learjet Inc.
Aircraft STC directory
Learjet Learjet 55 Series STCs
The Jun 30, 2026 FAA DRS snapshot contains 9 selected supplemental type certificates with status Current whose public applicability data names the Learjet Learjet 55 Series. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
9
listed Current at snapshot
1
holder directories
4
modification categories
Jun 28, 2002
latest recorded revision
Modification demand surface
Other aircraft modifications3
Avionics3
Safety and emergency equipment2
Electrical systems1
Recorded holders
Recently revised Learjet 55 Series STCs
Showing the 9 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST01050SEOther aircraft modifications
Group approval for Reduced Vertical Separation Minimum are contained in AeroMech Document No AMI-QD-LJ-0120, Rev. New, dated February 28, 2002, or later FAA-approved revisions.
FAA holder: Learjet Inc
ST00093DE-DOther aircraft modifications
Installation of AlliedSignal CAS 66 TCAS I system.
FAA holder: Learjet Inc.
ST00198DE-DAvionics
Installation of a Universal Avionics Systems Corporation UNS-1C Flight Management System (FMS).
FAA holder: Learjet Inc.
ST00199DE-DSafety and emergency equipment
Installation of an AlliedSignal MK-VI Ground proximity Warning System (GPWS).
FAA holder: Learjet Inc.
ST00204DE-DAvionics
Installation of a Universal Avionics Systems Corporation UNS-1M Navigation Management System (NMS).
FAA holder: Learjet Inc.
ST00507DE-DSafety and emergency equipment
Installation of an Artex 406 MHz Emergency Locator Transmitter (ELT).
FAA holder: Learjet Inc.
ST01062WI-DAvionics
Incorporation of a Universal Avionics CVR-120 cockpit voice recorder.
FAA holder: Learjet Inc
ST02399ATElectrical systems
Replace standard Bendix 30B107-19-A generators with Auxilee Geneators, p/n A3579-000 per CRS Technologies Inc. A3579-000 generator removal and installation instructions, dtd 11/1/99.
FAA holder: CRS Technologies, Inc.