SA1604SOAircraft structures
Installation of wing external stores attach points on the lower surface of both wings.
FAA holder: Phoenix Air Group Inc.
Aircraft STC directory
Learjet Learjet 25C STCs
The Jun 30, 2026 FAA DRS snapshot contains 17 selected supplemental type certificates with status Current whose public applicability data names the Learjet Learjet 25C. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
17
listed Current at snapshot
11
holder directories
9
modification categories
May 29, 2024
latest recorded revision
Modification demand surface
Other aircraft modifications4
Cargo and special mission3
Aircraft structures2
Cabin and interiors2
Safety and emergency equipment2
Landing gear and brakes1
Electrical systems1
Engine and powerplant1
Flight controls1
Recently revised Learjet 25C STCs
Showing the 17 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA1459GLLanding gear and brakes
Installation of a Cleveland nose wheel.
FAA holder: Kaman Corporation Aircraft Wheel and Brake LLC
SA00120SEElectrical systems
Installation of emergency medical stretcher, oxygen, and electrical systems.
FAA holder: LifePort LLC
ST00365SEOther aircraft modifications
Installation of LifePort, Inc., ServiPlex Unit.
FAA holder: LifePort LLC
ST00728LAOther aircraft modifications
Installation of Infant Transport Module.
FAA holder: LifePort LLC
ST587CHCargo and special mission
Install air ambulance conversion.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
SA1670CEAircraft structures
Installation of wing external stores attach points on bottom surface of both wings.
FAA holder: Avcon Industries, Inc
SA2446SWCabin and interiors
Installation of cabin door closing system in accordance with Drawing List No. 34 dated 3/17/80 or later FAA approved revision.
FAA holder: Avcon Industries Inc
SA2715SWEngine and powerplant
Installation of access doors in engine nacelle according to Drawing 375201, Revision A, dated 1/13/78, or later FAA approved revision.
FAA holder: Avcon Industries Inc
SA1132SWOther aircraft modifications
Installation of side facing seats.
FAA holder: Aviation Fabricators Inc
ST01067WI-DSafety and emergency equipment
Incorporation of a Honeywell Mark VIII Enhanced Ground Proximity Warning System.
FAA holder: Learjet Inc
SA216RMFlight controls
Installation of Collins FCS-80 flight control system. (LEARJET 25 modified per ECR 936).
FAA holder: Learjet Inc
ST09834SCCabin and interiors
Installation of an alternate cabin emergency exit to a position opposite the entry door.
FAA holder: Addison Express LLC
SA2234CESafety and emergency equipment
Installation of a RH forward emergency exit.
FAA holder: Avcon Industries Inc
ST09568SCOther aircraft modifications
Modification of existing refrigerant R12 air conditioning systems to convert them into refrigerant R134a systems on the aircraft identified above.
FAA holder: Steinbach & Associates, Inc.