ST12087CHCabin and interiors
Installation replacement Cabin/Cockpit Handheld Fire Extinguishers.
FAA holder: Avcon Industries Inc.
Aircraft STC directory
Learjet 24C STCs
The Jun 30, 2026 FAA DRS snapshot contains 25 selected supplemental type certificates with status Current whose public applicability data names the Learjet 24C. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
25
listed Current at snapshot
15
holder directories
10
modification categories
Sep 15, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications8
Avionics5
Cabin and interiors3
Cargo and special mission2
Safety and emergency equipment2
Electrical systems1
Landing gear and brakes1
Aircraft connectivity1
Fuel systems1
Engine and powerplant1
Recorded holders
Butler National Corporation4Symetric Industries, DBA Extant Aerospace3Royal Air Inc3Avcon Industries Inc1Peregrine1Summit Aviation Inc.1Med-Pac Inc.1LifePort LLC1Spectrum Aeromed LLC dba Spectrum Aeromed1Paul/ Lanna Egan LLC1Flight Test Aerospace, Inc1ELDEC Corporation1Parker Hannifin - Fluid Systems Division1West Star Aviation1DeVore Aviation Corporation of America, a New Mexico Corporation1
Recently revised 24C STCs
Showing the 25 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST02097SEAvionics
Installation of replacement circuit boards for the FC-110 autopilot.
FAA holder: Symetric Industries, DBA Extant Aerospace
ST02416SEOther aircraft modifications
Installation of the replacement rate gyro, Butler National Part Number 501-1169-01 MOD A or 501-1169-02 MOD A.
FAA holder: Symetric Industries, DBA Extant Aerospace
ST02417SEOther aircraft modifications
Installation of the replacement stall warning vertical accelerometer, Butler National Part Number 02904001-101.
FAA holder: Symetric Industries, DBA Extant Aerospace
ST01138DEOther aircraft modifications
Installation of MidContinent MD23 standby altimeter and/or attitude indicators.
FAA holder: Butler National Corporation
ST02004WIOther aircraft modifications
Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI).
FAA holder: Peregrine
ST02230SEAvionics
The installation of dual Garmin GTX-33ES Mode-S transponders and single or dual Garmin GTN 650/750 panel mounted navigation and global positioning system (GPS) units, or dual Garmin GTX-335R and/or GTX-345R Mode-S transponders and single or dual Garmin GTN 650/750/625/725 panel mounted navigation and GPS units.
FAA holder: Butler National Corporation
ST02681AT-DCabin and interiors
Installation of Cockpit / Cabin Blower Assy.
FAA holder: Summit Aviation Inc
SA01452CHCargo and special mission
Installation of an air ambulance conversion kit.
FAA holder: Med-Pac Inc.
SA4999NMOther aircraft modifications
Installation of lifeport patient loading and support system.
FAA holder: LifePort LLC
SA1639GLCargo and special mission
Install air ambulance conversion.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
ST02500SEAvionics
The installation of the Garmin GDL-88 with the Flight Stream 210 to allow ADS-B(In) Flight Information Service Broadcast (FIS-B), independent of the ADS-B(Out) solution compliance.
FAA holder: Butler National Corporation
SA1170GLElectrical systems
Except Model 55: Install Egan Aviation air ambulance stretcher P/N 125 using installation kit P/N 803, inverter/pump kit No. 808, 809, or 810. For Model 55, install air ambulance stretcher P/N 125 using installation kit P/N 804, medical oxygen system kit P/N 807, inverter/pump kit No. 808, 809, or810.
FAA holder: Paul/ Lanna Egan LLC
ST02121CHOther aircraft modifications
Certification for Reduced Vertical Separation Minimum (RVSM) operational capability and installation of dual Honeywell AM-250 Altimeters and Rosemount model 0856NA Pitot-Static Probes.
FAA holder: Flight Test Aerospace, Inc
ST02316LALanding gear and brakes
Installation of a Crane Aerospace & Electronics Tire Sensor Assembly.
FAA holder: ELDEC Corporation
ST01734WISafety and emergency equipment
Installation of an Emergency Pneumatic Reservoir Assembly, EAS P/N 1260001-02.
FAA holder: EAS Corporation
ST03132CHAircraft connectivity
Installation of a single or dual Collins TDR-94/94D Mode S Transponder using existing control head, aircraft wiring, and antenna(s).
FAA holder: Royal Air Inc
SA996EAFuel systems
Installation of Shaw Aero fuel filler cap P/Ns 457-2, -266, -370, 431, -9R, -125, -1251.
FAA holder: Parker Hannifin Fluid Systems Division
ST01842SEAvionics
Installation of a Sandel Avionics Horizontal Situation Indicator (HSI) and Attitude Direction Indicator (ADI).
FAA holder: Butler National Corporation
ST02265CHEngine and powerplant
Installation of Thrust Reverser Hydraulic System Modifications that were previously installed by STC SA1731SW, SA1669SW or SA1670SW.
FAA holder: Leading Edge Designs LLC
ST01904CHAvionics
Installation of IS&S Air Data Display Units 9D-80130-15, Analog Interface Unit 9B-81040-30, and Rosemount model 0856NA pitot-static probes. Limited to Learjet 24 models with MKII wings, 300 kts Vmo airspeed limitation, and JET FC-110 autopilot. Excludes serial numbers 25-337, 25-352, 25-361, and 25-370 through 25-372.
FAA holder: Royal Air Inc
ST02016CHOther aircraft modifications
Certification for Reduced Vertical Separation Minimum (RVSM) operational capability. Excluding serial numbers 25-337, 25-352, 25-361, and 25-370 through 25-372.
FAA holder: Royal Air Inc
SA1170CECabin and interiors
Stretcher installation in cabin area.
FAA holder: Med-Flite of Midamerica Inc
ST00361DESafety and emergency equipment
Installation of Puritan Bennett or B/E Aerospace Sweep on 2000 or Zodiac Intertechnique EROS crew oxygen mask.
FAA holder: West Star Aviation
SA2876WEOther aircraft modifications
Installation of vertical tail floodlights on the horizontal stabilizer.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation