# STCs approved for this model: Learjet 31A A list on [Learjet 31A](https://openairdocs.org/model/learjet-31a.md). Current certificates first. Page 1 of 3 · 104 STCs - [STC SA00237SE](https://openairdocs.org/stc/SA00237SE.md): Installation of emergency medical stretcher, oxygen, and electrical systems. · LifePort, LLC - [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 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 SA2580CE](https://openairdocs.org/stc/SA2580CE.md): Installation of Fairchild Model GA100 Cockpit Voice Recorder · Learjet 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 SA2639CE](https://openairdocs.org/stc/SA2639CE.md): Installation of Universal Navigation system model CVR-80 cockpit voice Recorder · Learjet Inc - [STC SA4836SW](https://openairdocs.org/stc/SA4836SW.md): Installation of TR4000 thrust reversers · The NORDAM Group LLC - [STC SA4999NM](https://openairdocs.org/stc/SA4999NM.md): Installation of lifeport patient loading and support system. · LifePort LLC - [STC SA8148NM-D](https://openairdocs.org/stc/SA8148NM-D.md): Installation of a Collins VHF-22C / D Comm System · Learjet Inc. - [STC ST00016WI](https://openairdocs.org/stc/ST00016WI.md): Installation of Electric Floorboard Heaters · Learjet Inc - [STC ST00098IB](https://openairdocs.org/stc/ST00098IB.md): Introduction of ADS-B Out · STC Twenty One Limited - [STC ST00237SE](https://openairdocs.org/stc/ST00237SE.md): Installation of emergency medical stretcher, oxygen, and electrical systems. · LifePort LLC - [STC ST00318WI](https://openairdocs.org/stc/ST00318WI.md): Installation of an Allied Signal Sundstrand Mark VII Ground Proximity Warning System (GPWS). · Duncan Aviation, Inc - [STC ST00318WI-D](https://openairdocs.org/stc/ST00318WI-D.md): Installation of an Allied Signal Sundstrand Mark VII Ground Proximity Warning System (GPWS). · Duncan Aviation Inc - [STC ST00322DE-D](https://openairdocs.org/stc/ST00322DE-D.md): Installation of Artex ELT 110-406 or C406-2 emergency locator transmitter. · Learjet Inc. - [STC ST00324WI](https://openairdocs.org/stc/ST00324WI.md): Install tail logo lights. · Learjet Inc - [STC ST00346WI-D](https://openairdocs.org/stc/ST00346WI-D.md): Installation of Allied Signal (Bendix King) CAS 67 TCAS II Traffic Alert and Collision Avoidance System. · Learjet Inc - [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 ST00352SE](https://openairdocs.org/stc/ST00352SE.md): Installation of an aft fuselage stowage locker. · Raisbeck Engineering Inc. - [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 ST00519SE](https://openairdocs.org/stc/ST00519SE.md): Installation of a Sacred Heart Medical Center MOBI IV Life Support System. · Sacred Heart Medical Center - [STC ST00653DE](https://openairdocs.org/stc/ST00653DE.md): Latitude Technologies Corp. SkyNode S200 SATCOM system in Lear Jet Model 31, 31A, 35, 35A, 36, 36A airplanes. · DC Aerospace LLC - [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 ST00786WI-D](https://openairdocs.org/stc/ST00786WI-D.md): Installation of Allied Signal MVII Enhanced GPWS/Windshear System · Learjet Inc - [STC ST00790DE](https://openairdocs.org/stc/ST00790DE.md): Installation of BendixKing CAS 67B Traffic Alert and Collision Avoidance System (TCAS) II Version 7.1 · Peregrine - [STC ST00835DE](https://openairdocs.org/stc/ST00835DE.md): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out and In functionality using the Garmin GTX 335R and GTX 345R Transponders plus qualified position sensor · Peregrine - [STC ST00836CH-D](https://openairdocs.org/stc/ST00836CH-D.md): Installation of AlliedSignal Aerospace N1 Digital Electronic Engine Control (DEEC). · Honeywell International Inc - [STC ST00882DE](https://openairdocs.org/stc/ST00882DE.md): Installation of Becker Avionics BXT6553 transponder · Peregrine - [STC ST01024WI-D](https://openairdocs.org/stc/ST01024WI-D.md): Installation of a Honeywell MK-VIII Enhanced Ground Proximity Warning System (EGPWS). · Duncan Aviation Inc - [STC ST01031WI](https://openairdocs.org/stc/ST01031WI.md): Upgrade of existing Universal Avionics CVR-80 cockpit voice recorder to Universal CVR-30B or CVR-120. · Duncan Aviation Inc - [STC ST01036WI-D](https://openairdocs.org/stc/ST01036WI-D.md): Incorporation of a Honeywell MK VIII Enhanced Ground Proximity Warning System · Learjet Inc. - [STC ST01056WI](https://openairdocs.org/stc/ST01056WI.md): Installation of the Honeywell Enhanced Ground Proximity Warning System (EGPWS) in the Learjet Model 31A airplane. Data Required: (1) JetCorp STC Drawing List No. 63-327L001, revision A, dated February 18, 2002; (2) FAA Approved Airplane Flight Manual Supplement, JetCorp Document No. 63-327B002, revision IR, dated February 20, 2002; or later FAA Approved revisions to (1) or (2). · JetCorp - [STC ST01070DE](https://openairdocs.org/stc/ST01070DE.md): Installation of the Curtiss-Wright Fortress Flight Data Recorder (with Cockpit Voice Recorder) · Peregrine - [STC ST01138DE](https://openairdocs.org/stc/ST01138DE.md): Installation of MidContinent MD23 standby altimeter and/or attitude indicators · Butler National Corporation - [STC ST01142WI-D](https://openairdocs.org/stc/ST01142WI-D.md): Modification of a single or dual Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92 control head to a Flight ID capable Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92E control head. · Rockwell Collins Inc - [STC ST01289WI](https://openairdocs.org/stc/ST01289WI.md): Installation of a Davtron Fuel Temperature System. Data Required: 1) LJSC, Ltd. Master Document List MDL4035-28280, Revision B, dated November 19, 2004; and 2) LJSC, Ltd. Airplane Flight Manual Supplement FMS4035-28280, Revision NC, dated November 19, 2004; or later FAA approved revisions to (1) or (2). · Global Aviation Technologies - [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D.md): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. · Rockwell Collins Inc - [STC ST01307WI-D](https://openairdocs.org/stc/ST01307WI-D.md): Modification of a Collins TVI-920/TVI-920D Vertical Speed/TCAS Indicator installation · Rockwell Collins Inc - [STC ST01326WI](https://openairdocs.org/stc/ST01326WI.md): Installation of an Aux Window Blower System Upgrade on Learjet Model 31A-144. Data required: 1) LJSC Ltd. Master Document List MDL4049-25207, Revision A, dated March 28, 2005; and 2) LJSC Ltd. Airplane Flight Manual Supplement FMS4049-25207, Revision IR, dated May 4, 2005; or later FAA approved revisions to (1) or (2). · Global Aviation Technologies - [STC ST01391WI](https://openairdocs.org/stc/ST01391WI.md): Upgrade of the Universal UNS-1B Flight Management System (FMS) to the UNS-1F FMS · Global Aviation Tech LLC - [STC ST01412WI](https://openairdocs.org/stc/ST01412WI.md): Installation of the Revue Thommen 2 Standby Altimeter · Revue Thommen AG - [STC ST01471WI](https://openairdocs.org/stc/ST01471WI.md): ONE ONLY STC, S/N 048: Floor plan change · JetCorp - [STC ST01500WI](https://openairdocs.org/stc/ST01500WI.md): Upgrade of the Universal UNS-1C FMS to the UNS-1E FMS · Global Aviation Technologies - [STC ST01517WI](https://openairdocs.org/stc/ST01517WI.md): Installation of the Glareshield LED Lighting System · Global Aviation Tech LLC - [STC ST01587WI-D](https://openairdocs.org/stc/ST01587WI-D.md): Upgrade of a single Universal Avionics Systems Corporation (UASC) UNS-1C Flight Management System (FMS) to UNS-1Ew FMS with Wide Area Augmentation system (WAAS) and Localizer Performance with Vertical guidance (LPV) Monitor. · Duncan Aviation Inc Next page: https://openairdocs.org/model/learjet-31a/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 = '31A') ORDER BY s.status = 'Current' DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/model/learjet-31a/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.