# STCs approved for this model: Learjet 25 A list on [Learjet 25](https://openairdocs.org/model/learjet-25.md). Current certificates first. Page 1 of 3 · 110 STCs - [STC SA00179WI](https://openairdocs.org/stc/SA00179WI.md): Installation of pressure dome provision for an infrared scanner in the camera door. · Avcon Industries Inc - [STC SA01213CH](https://openairdocs.org/stc/SA01213CH.md): Install air ambulance conversion in accordance with Spectrum Aeromed Inc. Drawings as listed on AML SA01213CH, or later FAA approved revision. · Spectrum Aeromed LLC dba Spectrum Aeromed - [STC SA01452CH](https://openairdocs.org/stc/SA01452CH.md): Installation of an air ambulance conversion kit. · Med-Pac Inc. - [STC SA01858AT-D](https://openairdocs.org/stc/SA01858AT-D.md): Installation of a BF Goodrich Avionics Systems, Inc. TCAS791/A TCAS I system. · Summit Aviation Inc - [STC SA1170CE](https://openairdocs.org/stc/SA1170CE.md): Stretcher installation in cabin area. · Med-Flite of Midamerica Inc - [STC SA1170GL](https://openairdocs.org/stc/SA1170GL.md): 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. · Paul/ Lanna Egan LLC - [STC SA1489CE](https://openairdocs.org/stc/SA1489CE.md): Removal of 24-inch wide executive door and installation of 36-inch wide cargo door per AVCON Drawing List 36000 stamped FAA Approved with a date of May 8, 1979, July 3, 1980, November 15, 2010, or later approved revision for Learjet Models 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A, 36, and 36A. · Avcon Industries Inc - [STC SA1639GL](https://openairdocs.org/stc/SA1639GL.md): Install air ambulance conversion. · Spectrum Aeromed LLC dba Spectrum Aeromed - [STC SA1670SW](https://openairdocs.org/stc/SA1670SW.md): Installation of engine thrust reversers. · The NORDAM Group LLC - [STC SA1746SW](https://openairdocs.org/stc/SA1746SW.md): Installation of Ray Electronics Model 7107 battery fault warning system. · Ray Electronics Company - [STC SA175RM](https://openairdocs.org/stc/SA175RM.md): Replacement of throttle knob, Model EP-004, for 20 series Learjet equipped with Dee Howard thrust reversers. · Jet Accessories Inc - [STC SA1RM](https://openairdocs.org/stc/SA1RM.md): Installation of cargo restraint system · Avcon Industries Inc - [STC SA225NW](https://openairdocs.org/stc/SA225NW.md): Installation of the Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements. · Avcon Industries Inc - [STC SA2304SW](https://openairdocs.org/stc/SA2304SW.md): Replacement of plunger type landing gear squat switch with rotary type switch. · Sierra Industries, Inc - [STC SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc. - [STC SA2657SW](https://openairdocs.org/stc/SA2657SW.md): Modification of air conditioner motor · Zee Systems, Inc - [STC SA2661SW](https://openairdocs.org/stc/SA2661SW.md): Installation of Ray Model 7507A battery monitoring system · Zee Company, Inc - [STC SA2726SW](https://openairdocs.org/stc/SA2726SW.md): Installation of 6-pole rotary squat switches. · Sierra Industries, Inc - [STC SA2788SW](https://openairdocs.org/stc/SA2788SW.md): Installation of tail-stringer antenna housing. · Sted-Mac Co - [STC SA2861SW](https://openairdocs.org/stc/SA2861SW.md): Addition of Hydro seal fluid additive to nose and main gear shock struts. · Granville Lasseter/dba Granville's Aircraft Strut Sealant - [STC SA2876WE](https://openairdocs.org/stc/SA2876WE.md): Installation of vertical tail floodlights on the horizontal stabilizer. · DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SA30GL](https://openairdocs.org/stc/SA30GL.md): Installation of electronic engine synchronizer system. · Ontic Engineering and Manufacturing Inc. - [STC SA3249WE](https://openairdocs.org/stc/SA3249WE.md): Installation of dual Collins ADF Systems. · Learjet Inc - [STC SA3264WE](https://openairdocs.org/stc/SA3264WE.md): Installation of Global GNS-500A VLF navigation system. · Learjet Inc - [STC SA3328WE](https://openairdocs.org/stc/SA3328WE.md): Installation of flight data recorder Sundstrand Model FA542. · Learjet Inc - [STC SA3343NM](https://openairdocs.org/stc/SA3343NM.md): Cockpit Sun Visor installation · Rosen Sunvisor Systems LLC - [STC SA36NW](https://openairdocs.org/stc/SA36NW.md): Installation of Sundstrand Ground Proximity Warning System · Sundstrand Data Control Inc - [STC SA3899WE](https://openairdocs.org/stc/SA3899WE.md): Installation of Collins F1S-84 Flight Instrument System. · Learjet Inc - [STC SA4053NM](https://openairdocs.org/stc/SA4053NM.md): Installation of emergency medical system. · Intl Jet Aviation Svcs - [STC SA4060NM](https://openairdocs.org/stc/SA4060NM.md): Installation of emergency medical system. · Mayo Aviation Inc - [STC SA4073NM](https://openairdocs.org/stc/SA4073NM.md): MSN 25-014 Installation of emergency medical system · Air Methods Corporation - [STC SA412CE](https://openairdocs.org/stc/SA412CE.md): Installation of Woodward Electronic Engine synchronizer system. · Ontic Engineering and Manufacturing Inc. - [STC SA4218WE](https://openairdocs.org/stc/SA4218WE.md): Installation of Radio Corporation of America Primus-300SL Color Weather Radar System. · Learjet Inc - [STC SA4403NM](https://openairdocs.org/stc/SA4403NM.md): Installation of third attitude indicator that meets the requirements of FAR 121.305(j). · Learjet Inc - [STC SA4435NM](https://openairdocs.org/stc/SA4435NM.md): Installation of an emergency locator transmitter. · Learjet Inc - [STC SA4999NM](https://openairdocs.org/stc/SA4999NM.md): Installation of lifeport patient loading and support system. · LifePort LLC - [STC SA639AL](https://openairdocs.org/stc/SA639AL.md): Installation of Model EP-110 starter/generator decoupler system on Models 23, 24, 25 airplanes using Bendix Model30B-37 starter generators. · Jet Accessories Inc - [STC SA900NW](https://openairdocs.org/stc/SA900NW.md): : Installation of the Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements in accordance with Avcon Master Drawing List No. 1086 dated November 16, 2010, or later FAA approved revision. An FAA approved Airplane Flight Manual Supplement is required for each model. · Avcon Industries Inc - [STC SA944NW](https://openairdocs.org/stc/SA944NW.md): Installation of the XR Drag Reduction System · Avcon Industries Inc - [STC SA996EA](https://openairdocs.org/stc/SA996EA.md): Installation of Shaw Aero fuel filler cap P/Ns 457-2, -266, -370, 431, -9R, -125, -1251. · Parker Hannifin Fluid Systems Division - [STC ST00016WI](https://openairdocs.org/stc/ST00016WI.md): Installation of Electric Floorboard Heaters · Learjet Inc - [STC ST00226BO](https://openairdocs.org/stc/ST00226BO.md): Installation of Honeywell CAS-67A Airborne Collision Avoidance System (ACAS II) with dual MST-67A Mode S Transponders and copilot's Intercontinental Dynamics Corporation encoding altimeter with Static Defect Correction Module. · Pro Star Aviation, LLC - [STC ST00347BO](https://openairdocs.org/stc/ST00347BO.md): Modification to upgrade a BendixKing CAS 67A TCAS II system to CAS 67B TCAS II Change 7.1 · Pro Star Aviation, LLC - [STC ST00361DE](https://openairdocs.org/stc/ST00361DE.md): Installation of Puritan Bennett or B/E Aerospace Sweep on 2000 or Zodiac Intertechnique EROS crew oxygen mask. · West Star Aviation - [STC ST00373BO](https://openairdocs.org/stc/ST00373BO.md): Installation of Rockwell Collins TDR-94D Transponders with ADS-B Out · Pro Star Aviation, LLC - [STC ST00462LA](https://openairdocs.org/stc/ST00462LA.md): Modification of the engine exhaust system. · Rooke Corporation dba Aviation Equipment - [STC ST00550DE](https://openairdocs.org/stc/ST00550DE.md): Modification and installation of an optical glass in forward right hand passenger window. · SPEC Inc - [STC ST00673WI-D](https://openairdocs.org/stc/ST00673WI-D.md): Modification of Collins VHF-22A/VHF-22B VHF COMM Receiver Transmitter with CTL-22 Control Pro Line II System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System installation. · Rockwell Collins Inc - [STC ST00682WI-D](https://openairdocs.org/stc/ST00682WI-D.md): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation in accordance with Collins Installation Instructions as listed on AML No. ST00682WI-D, Revision -, or later FAA approved revisions. · Rockwell Collins Inc - [STC ST00738WI](https://openairdocs.org/stc/ST00738WI.md): Increased service life. Data required. · Phoenix Air Group Inc. Next page: https://openairdocs.org/model/learjet-25/stcs.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT s.stc_number, s.description, s.holder, s.status, s.status_date FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE model_key = '25') ORDER BY s.status = 'Current' DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/model/learjet-25/stcs --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.