# Learjet 25 - Type: Aircraft model (FAA registry) - Registry code: 5170506 - Manufacturer (registry): LEARJET INC - Model: 25 - Aircraft type: Fixed wing multi engine - Category: Airplane - Engines: 2 · Turbo-jet - Seats: 10 - Weight class: 12,500 to 19,999 lb - Cruise speed: 388 mph - Certification: Type certificated - Data sheet: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs) - Holder: Learjet Inc. - Registered aircraft: 2 - Page: https://openairdocs.org/model/learjet-25 Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2007-04-18](https://openairdocs.org/ad/2007-04-18): Left- and right-hand standby fuel pump switches · Learjet 23, 24, 24A and 25 more. Effective Mar 23, 2007 - [AD 2005-23-06](https://openairdocs.org/ad/2005-23-06): Thrust reverser hydraulic system · Engine thrust reversers (NORDAM Group STC SA1669SW or 2 others). Effective Dec 19, 2005 - [AD 2005-23-03](https://openairdocs.org/ad/2005-23-03): Spherical accumulator for the main hydraulic system · Learjet 23, 24, 24A and 14 more. Effective Dec 19, 2005 - [AD 2005-16-09](https://openairdocs.org/ad/2005-16-09): Flappers. · Learjet 23, 24, 25 and 2 more. Effective Sep 13, 2005 - [AD 2005-13-36](https://openairdocs.org/ad/2005-13-36): Center ball of the aileron control cable · Learjet 23, 24, 24A and 21 more. Effective Aug 9, 2005 - [AD 2001-07-11](https://openairdocs.org/ad/2001-07-11): Main Landing Gear Tires · Learjet 23, 24, 24A and 25 more. Effective May 1, 2001 - [AD 99-16-03](https://openairdocs.org/ad/99-16-03): Horizontal Stabilizer Anti-Ice System · Learjet 23, 24, 24A and 22 more. Effective Sep 7, 1999 - [AD 95-20-03](https://openairdocs.org/ad/95-20-03): Airplane Flight Manual (AFM) - Altitude Limitations · Learjet 24, 24A, 24B and 24 more. Effective Nov 2, 1995 - [AD 92-19-12](https://openairdocs.org/ad/92-19-12): Oxygen Plumbing & Map Light Wires · Learjet 23, 24, 24A and 22 more. Effective Nov 17, 1992 - [AD 89-12-01](https://openairdocs.org/ad/89-12-01): Drag Chute Riser · Learjet 24, 24A, 24B and 22 more. Effective Jul 3, 1989 - [AD 86-05-05 R1](https://openairdocs.org/ad/86-05-05-R1): Battery Vent System · Learjet 23, 24, 24A and 20 more. Effective Jan 19, 1988 - [AD 86-22-05](https://openairdocs.org/ad/86-22-05): Flap Sector Mounting Brackets Inspection · Learjet 23, 24, 24A and 23 more. Effective Nov 10, 1986 - [AD 82-01-04 R2](https://openairdocs.org/ad/82-01-04-R2): Horizontal Stabilizer Trim Actuator · Learjet 25, 25A, 25B and 1 more. Effective Apr 7, 1986 - [AD 80-19-11 R1](https://openairdocs.org/ad/80-19-11-R1): Automatic Flight Control and Stall Warning Systems · Learjet 23, 24, 24A and 20 more. Effective May 20, 1985 - [AD 84-19-06](https://openairdocs.org/ad/84-19-06): Tab Control System · Learjet 24, 24A, 24B and 22 more. Effective Oct 22, 1984 - [AD 81-13-07](https://openairdocs.org/ad/81-13-07): Change to AFM Fuel Starvation · Learjet 23, 24, 24A and 20 more. Effective Jun 25, 1981 - [AD 80-26-02](https://openairdocs.org/ad/80-26-02): AFCS/AFC-SS Pitch Function · Learjet 23, 24, 24A and 16 more. Effective Jan 15, 1981 - [AD 80-19-09 R1](https://openairdocs.org/ad/80-19-09-R1): Jet Pumps · Learjet 23, 24, 24A and 20 more. Effective Dec 11, 1980 - [AD 80-07-09](https://openairdocs.org/ad/80-07-09): Cabin Main Entrance Upper Door · Learjet 23, 24, 24A and 20 more. Effective May 1, 1980 - [AD 79-12-05](https://openairdocs.org/ad/79-12-05): Stall Warning Systems · Learjet 24, 24A, 24B and 13 more. Effective Nov 6, 1979 - [AD 78-20-12](https://openairdocs.org/ad/78-20-12): Aircraft Tires · Cessna 336, 337, T337B and 15 more. Effective Oct 5, 1978 - [AD 78-16-03](https://openairdocs.org/ad/78-16-03): Refrigeration Condenser Fan · Learjet 23, 24, 24A and 18 more. Effective Aug 17, 1978 - [AD 77-19-02](https://openairdocs.org/ad/77-19-02): Cabin Door Locking Mechanism · Learjet 23, 24, 24A and 14 more. Effective Jul 20, 1978 - [AD 76-18-07](https://openairdocs.org/ad/76-18-07): Inverter Input Power · Learjet 24, 25, 35 and 1 more. Effective Sep 10, 1976 - [AD 75-15-06](https://openairdocs.org/ad/75-15-06): Landing Gear Struts · Learjet 23, 24, 24A and 14 more. Effective Jul 25, 1975 - [AD 72-15-03](https://openairdocs.org/ad/72-15-03): Spoiler Actuator Pivot Bolts · Learjet 24 and 25. Effective Sep 19, 1974 - [AD 71-16-04](https://openairdocs.org/ad/71-16-04): Battery Change or Modification of Comb · Learjet 23, 24 and 25. Effective Aug 3, 1971 - [AD 69-15-06](https://openairdocs.org/ad/69-15-06): Engine Throttle Cable · Learjet 23, 24 and 25. Effective Aug 15, 1969 Historical (superseded or no longer in force): - [AD 95-25-03](https://openairdocs.org/ad/95-25-03) (historical): Deterioration of Flapper Valves of Tip Tank · Learjet 23, 24, 25 and 2 more. Effective Dec 27, 1995 ## Information bulletins (advisory) (3) - [SAIB 2026-07](https://openairdocs.org/saib/2026-07): MAIN LANDING GEAR ATTACH SECTION, Trunnion Pins. Issued Mar 19, 2026 - [SAIB NM-16-24](https://openairdocs.org/saib/NM-16-24): Fuselage: Main Plate/Skin. Issued Sep 15, 2016 - [SAIB NM-13-38](https://openairdocs.org/saib/NM-13-38): Flight Controls Control Column Section. Issued Jun 24, 2013 ## Registered aircraft (2) - [N473TC](https://openairdocs.org/aircraft/N473TC): [Tulsa Technology Center School District #18](https://openairdocs.org/faa-owner/TULSA%20TECHNOLOGY%20CENTER%20SCHOOL%20DISTRICT%20%2318), [Tulsa, OK](https://openairdocs.org/faa-place/OK/Tulsa), built 1969, S/N 043 - [N929JG](https://openairdocs.org/aircraft/N929JG): [Pittsburgh Institute Of Aeronautics](https://openairdocs.org/faa-owner/PITTSBURGH%20INSTITUTE%20OF%20AERONAUTICS), [West Mifflin, PA](https://openairdocs.org/faa-place/PA/West%20Mifflin), S/N 035 ## STCs approved for it (110, first 50) - [STC SA00179WI](https://openairdocs.org/stc/SA00179WI): Installation of pressure dome provision for an infrared scanner in the camera door.. Avcon Industries Inc - [STC SA01213CH](https://openairdocs.org/stc/SA01213CH): 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): Installation of an air ambulance conversion kit.. Med-Pac Inc. - [STC SA01858AT-D](https://openairdocs.org/stc/SA01858AT-D): Installation of a BF Goodrich Avionics Systems, Inc. TCAS791/A TCAS I system.. Summit Aviation Inc - [STC SA1170CE](https://openairdocs.org/stc/SA1170CE): Stretcher installation in cabin area.. Med-Flite of Midamerica Inc - [STC SA1170GL](https://openairdocs.org/stc/SA1170GL): 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): 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): Install air ambulance conversion.. Spectrum Aeromed LLC dba Spectrum Aeromed - [STC SA1670SW](https://openairdocs.org/stc/SA1670SW): Installation of engine thrust reversers.. The NORDAM Group LLC - [STC SA1746SW](https://openairdocs.org/stc/SA1746SW): Installation of Ray Electronics Model 7107 battery fault warning system.. Ray Electronics Company - [STC SA175RM](https://openairdocs.org/stc/SA175RM): 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): Installation of cargo restraint system. Avcon Industries Inc - [STC SA225NW](https://openairdocs.org/stc/SA225NW): 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): Replacement of plunger type landing gear squat switch with rotary type switch.. Sierra Industries, Inc - [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): 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): Modification of air conditioner motor. Zee Systems, Inc - [STC SA2661SW](https://openairdocs.org/stc/SA2661SW): Installation of Ray Model 7507A battery monitoring system. Zee Company, Inc - [STC SA2726SW](https://openairdocs.org/stc/SA2726SW): Installation of 6-pole rotary squat switches.. Sierra Industries, Inc - [STC SA2788SW](https://openairdocs.org/stc/SA2788SW): Installation of tail-stringer antenna housing.. Sted-Mac Co - [STC SA2861SW](https://openairdocs.org/stc/SA2861SW): 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): 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): Installation of electronic engine synchronizer system.. Ontic Engineering and Manufacturing Inc. - [STC SA3249WE](https://openairdocs.org/stc/SA3249WE): Installation of dual Collins ADF Systems.. Learjet Inc - [STC SA3264WE](https://openairdocs.org/stc/SA3264WE): Installation of Global GNS-500A VLF navigation system.. Learjet Inc - [STC SA3328WE](https://openairdocs.org/stc/SA3328WE): Installation of flight data recorder Sundstrand Model FA542.. Learjet Inc - [STC SA3343NM](https://openairdocs.org/stc/SA3343NM): Cockpit Sun Visor installation. Rosen Sunvisor Systems LLC - [STC SA36NW](https://openairdocs.org/stc/SA36NW): Installation of Sundstrand Ground Proximity Warning System. Sundstrand Data Control Inc - [STC SA3899WE](https://openairdocs.org/stc/SA3899WE): Installation of Collins F1S-84 Flight Instrument System.. Learjet Inc - [STC SA4053NM](https://openairdocs.org/stc/SA4053NM): Installation of emergency medical system.. Intl Jet Aviation Svcs - [STC SA4060NM](https://openairdocs.org/stc/SA4060NM): Installation of emergency medical system.. Mayo Aviation Inc - [STC SA4073NM](https://openairdocs.org/stc/SA4073NM): MSN 25-014 Installation of emergency medical system. Air Methods Corporation - [STC SA412CE](https://openairdocs.org/stc/SA412CE): Installation of Woodward Electronic Engine synchronizer system.. Ontic Engineering and Manufacturing Inc. - [STC SA4218WE](https://openairdocs.org/stc/SA4218WE): Installation of Radio Corporation of America Primus-300SL Color Weather Radar System.. Learjet Inc - [STC SA4403NM](https://openairdocs.org/stc/SA4403NM): Installation of third attitude indicator that meets the requirements of FAR 121.305(j).. Learjet Inc - [STC SA4435NM](https://openairdocs.org/stc/SA4435NM): Installation of an emergency locator transmitter.. Learjet Inc - [STC SA4999NM](https://openairdocs.org/stc/SA4999NM): Installation of lifeport patient loading and support system.. LifePort LLC - [STC SA639AL](https://openairdocs.org/stc/SA639AL): 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): : 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): Installation of the XR Drag Reduction System. Avcon Industries Inc - [STC SA996EA](https://openairdocs.org/stc/SA996EA): 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): Installation of Electric Floorboard Heaters. Learjet Inc - [STC ST00226BO](https://openairdocs.org/stc/ST00226BO): 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): 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): 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): Installation of Rockwell Collins TDR-94D Transponders with ADS-B Out. Pro Star Aviation, LLC - [STC ST00462LA](https://openairdocs.org/stc/ST00462LA): Modification of the engine exhaust system.. Rooke Corporation dba Aviation Equipment - [STC ST00550DE](https://openairdocs.org/stc/ST00550DE): Modification and installation of an optical glass in forward right hand passenger window.. SPEC Inc - [STC ST00673WI-D](https://openairdocs.org/stc/ST00673WI-D): 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): 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): Increased service life. Data required.. Phoenix Air Group Inc. All 110: https://openairdocs.org/model/learjet-25/stcs.md ## NTSB investigations (8) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB DCA13RA025](https://openairdocs.org/ntsb/DCA13RA025), Dec 9, 2012: Learjet 25 (N345MC), Monterrey, Mexico, destroyed, 7 fatal - [NTSB NYC07LA170](https://openairdocs.org/ntsb/NYC07LA170), Jul 21, 2007: Learjet 25 (N70SK), St. Augustine, FL, substantial damage. Probable cause: A loss of power on both engines for an undetermined reason. - [NTSB DFW05CA174](https://openairdocs.org/ntsb/DFW05CA174), Jul 1, 2005: Learjet 25 (N345MC), Amarillo, TX, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing roll. A contributing factor was the prevailing crosswind. - [NTSB NYC01FA214](https://openairdocs.org/ntsb/NYC01FA214), Aug 24, 2001: Learjet 25 (N153TW), Ithaca, NY, destroyed, 2 fatal. Probable cause: The pilot's failure to maintain a proper climb rate while taking off at night, which was a result of spatial disorientation. Factors in the accident were the low visibility and cloud conditions, and… - [NTSB BFO89FA024](https://openairdocs.org/ntsb/BFO89FA024), Mar 24, 1989: Learjet 25 (N29FN), Roanoke, VA, substantial damage. Probable cause: CO-PILOTS POORLY PLANNED APPROACH WHICH RESULTED IN AN OVERRUN LANDING. A CONTRIBUTING FACTOR WAS THE CAPTAINS POOR SUPERVISION OF THE APPROACH AND LANDING. - [NTSB DCA83AA023](https://openairdocs.org/ntsb/DCA83AA023), Mar 30, 1983: Gates Learjet 25 (N51CA), Newark, NJ, destroyed, 2 fatal - [NTSB MKC74AK012](https://openairdocs.org/ntsb/MKC74AK012), Sep 25, 1973: Gates Lear 25 (N40LB), Lincoln, NE, destroyed, 3 fatal - [NTSB FTW72AF044](https://openairdocs.org/ntsb/FTW72AF044), Jan 18, 1972: Gates Lear 25 (N658TC), Victoria, TX, destroyed, 9 fatal ## FAA accident and incident reports (17) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20080910849639I](https://openairdocs.org/incident/20080910849639I), Sep 10, 2008: Lear 25 (N727LJ), Washington, DC, Minor damage. (-23) Inspector's statement:[privacy data omitted]. I interviewed the capt. [privacy data omitted] He stated that when he disconnected the yaw damper on short… - [Accident 20070721018079A](https://openairdocs.org/incident/20070721018079A), Jul 21, 2007: Lear 25 (N70SK), St Augustine, FL, Substantial damage. (-23) On July 21, 2007, at approximately 1415 EDT, a Learjet 25, N70SK, serial #049, was substantially damaged during a hard landing at st. Augustine airport,… - [Accident 20050701013749A](https://openairdocs.org/incident/20050701013749A), Jul 1, 2005: Lear 25 (N345MC), Amarillo, TX, Substantial damage. (-23) On July 1, 2005, at approximately 12:30 CDT, N345MC, a Learjet model 25, serial number 46, requested and was cleared to land on runway 04 at rick husband… - [Accident 20010824028449A](https://openairdocs.org/incident/20010824028449A), Aug 24, 2001: Lear 25 (N153TW), Ithaca, NY, No damage. (-23) On Friday, August 24, 2001 at 0542 local time, a Learjet LR-25-25 aircraft, operated by ameristar jet charter, inc. took off from runway 32 at Tompkins… - [Incident 20000519027499I](https://openairdocs.org/incident/20000519027499I), May 19, 2000: Lear 25 (N28CK), Lima, OH. (-23)Immediately after rotation a bird flew in front of the aircraft from left to right. Bird was ingested in right engine and caused engine to stop producing… - [Incident 19980306007499I](https://openairdocs.org/incident/19980306007499I), Mar 6, 1998: Lear 25 (N28CK), Kansas City, MO. Narrative: aircraft returned to mci due to oil pressure problem. Aircraft landed without incident. Company mechanics repaired oil leak and aircraft was… - [Incident 19950817033869I](https://openairdocs.org/incident/19950817033869I), Aug 17, 1995: Lear 25 (N345MC), Flint, MI, Minor damage. Right main tires failed during takeoff. Damaged wheels brake hose and anti skid. - [Incident 19921022049599I](https://openairdocs.org/incident/19921022049599I), Oct 22, 1992: Lear 25D (N999MF), Nashville, TN, Minor damage. Right engine had a compressor stall on climb. Flamed out. Restarted at a lower altitude. Continued to destination. - [Accident 19890324004429A](https://openairdocs.org/incident/19890324004429A), Mar 24, 1989: Lear 25 (N29FN), Roanoke, VA, Substantial damage. Went down embankment. Damaged landing gear, became airborne. Made 2 low passes,landed with no gear,went off runway - [Incident 19881014058319I](https://openairdocs.org/incident/19881014058319I), Oct 14, 1988: Lear 25 (N294NW), Huntsville, AL, Minor damage. Crossed active runway instead of holding when brakes failed. Rolled across taxiway onto grass. Faulty relief valve. - [Incident 19861028069279I](https://openairdocs.org/incident/19861028069279I), Oct 28, 1986: Lear 25 (N345MC), Houston, TX. Overflew helicopter with 700 feet separation. Both enroute to same airport. - [Accident 19830330075779A](https://openairdocs.org/incident/19830330075779A), Mar 30, 1983: Lear 25 (N51CA), Newark, NJ, Destroyed. Bounced on crosswind landing drifted downwind dragged a wing and cartwheeled. Pilots tested positive marijuana. - [Incident 19820124001672I](https://openairdocs.org/incident/19820124001672I), Jan 24, 1982: Mooney M20C (N21FN), Albany, GA, Minor damage. Wing tip was struck by propeller of a 175 N6842E while waiting for takeoff. Other pilot claims othrwise. - [Incident 19811217088669I](https://openairdocs.org/incident/19811217088669I), Dec 17, 1981: Lear 24B (N999MF), Van Nuys, CA, Minor damage. After touchdown nose wheel castered, aircraft veered off runway. Nose wheel strut was defected. - [Incident 19810910067009I](https://openairdocs.org/incident/19810910067009I), Sep 10, 1981: Lear 25 (N345MC), Houston, TX. Lost hydraulic pressure on rollout. Replaced defective line between accumulator and pressure regulator. - [Accident 19781020043949A](https://openairdocs.org/incident/19781020043949A), Oct 20, 1978: Lear 25 (N100MK), Vickery, OH, Destroyed. Aircraft crashed during FAA conducted flight check. Investigation indicates malfunction of servo drive unit. - [Accident 19730925042139A](https://openairdocs.org/incident/19730925042139A), Sep 25, 1973: Lear 25 (N40LB), Lincoln, NE, Destroyed, 1 fatal. Plt rated in model previous day. ## Service difficulty reports (71, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR HAEA201000213](https://openairdocs.org/sdr/HAEA201000213), Feb 1, 2010: INDICATOR. FAILED. CREW OBSERVED THE DME DISPLAY TO GO EXTREMELY BRIGHT FOLLOWED BY THE CIRCUIT BREAKER POPPING. CREW BRIEFLY NOTICED AN ELECTRICAL SMELL/SMOKE IN COCKPIT THAT WEN - [SDR KC8AN76CK](https://openairdocs.org/sdr/KC8AN76CK), Jun 19, 2009: ENGINE. FLAMED OUT. LT ENGINE FLAMED OUT AT 40,000FT, DURING CRUISE IN TURBULENT AIR. PILOT DESCENDED TO A LOWER ALTITUDE AND PERFORMED A SUCCESSFUL RELIGHT OF THE ENGINE. NO ABNOR - [SDR HAEA200800205A](https://openairdocs.org/sdr/HAEA200800205A), Nov 10, 2008: PUMP. FAILED. ENGINE RPM ROLLED BACK FL430 PLUS 30 MINUTES. AIRCRAFT DESCENDED TO FL 150 AND DIVERTED TO GSP. MAINTENANCE DISCOVERED ENGINE DRIVEN FUEL PUMP FAILED. REPLACED - [SDR N76CK80606](https://openairdocs.org/sdr/N76CK80606), Aug 6, 2006: ENGINE. FOD. CREW REPORTED RT FIRE WARNING LIGHT FLICKERING WHEN POWER LEVER WAS PULLED BACK TO THE IDLE POSITION. NO SECONDARY INDICATIONS NOTED. FOUND EXHAUST CASE LEAKING - [SDR KC8A0608001](https://openairdocs.org/sdr/KC8A0608001), Aug 3, 2006: GASKET. BLOWN. PILOT REPORTED RT ENGINE FIRE WARNING LIGHT FLICKERING ON DESCENT WITH POWER LEVER REDUCED TO IDLE SPEED. FOUND EXHAUST CASE, CENTER BODY, UPPER RIGHT STRUT SUP - [SDR HAEA200600191](https://openairdocs.org/sdr/HAEA200600191), Jun 27, 2006: ENGINE. POWER LOSS. AIRCRAFT ENCOUNTERED TURBULENCE AT FL430 AND RT ENGINE LOST POWER. AIRCRAFT DESCENDED AND ENGINE REGAINED POWER AT FL250. MAINTENANCE PERFORMED POST OPERATION I - [SDR KC82005F00008](https://openairdocs.org/sdr/KC82005F00008), Nov 14, 2005: SERVO. DEFECTIVE. AFTER TAKEOFF, GEAR WAS SELECTED UP, NOSE STEERING SERVO DRIVE NOSE WHEEL 90 DEGREES. NOSE GEAR WOULD NOT RETRACT INTO THE WHEEL WELL. GEAR WAS SELECTED DOWN AN - [SDR CED2006F00020](https://openairdocs.org/sdr/CED2006F00020), Oct 3, 2005: INDICATOR. DEFECTIVE. THE AIRCRAFT ABORTED TAKEOFF ROLL, THE NR 2 ENGINE WAS NOT MAKING TAKEOFF EPR. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND A DEFECTIVE EPR GAUGE. MAINTENANCE R - [SDR CED2006F00018](https://openairdocs.org/sdr/CED2006F00018), Aug 21, 2005: INSULATOR. DIRTY. WHILE DESCENDING THROUGH FL 220 FOR APPROACH INTO AIRPORT, THE NR2 FIRE LIGHT CAME ON MOMENTARILY. IMMEDIATELY REDUCED THE RT THRUST LEVER TO IDLE. MAINTENANCE - [SDR CED2006F00010](https://openairdocs.org/sdr/CED2006F00010), Aug 21, 2005: ENGINE. MALFUNCTIONED. HAD TO ABORT THE TAKEOFF WHILE ATTEMPTING TO DEPART. THE REASON FOR THE ABORT WAS THAT THE NR 2 ENGINE WOULD NOT PRODUCE TAKEOFF FOR THE CONDITIONS. MAINTENANCE - [SDR CED2006F00023](https://openairdocs.org/sdr/CED2006F00023), Jul 21, 2005: ENGINE. MALFUNCTIONED. ON TAKEOFF ROLL, THE NR 2 ENGINE WOULD NEVER PRODUCE TAKEOFF . THE CREW ABORTED TAKEOFF ROLL AND EXITED THE RUNWAY. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND - [SDR 6242004N238CA](https://openairdocs.org/sdr/6242004N238CA), Jun 24, 2005: FIRE LOOP. OUT OF POSITION. ON DECENT, THE FLIGHT CREW RECEIVED INDICATION OF FIRE IN THE NR1 ENGINE. THE FLIGHT CREW PERFORMED THE CHECKLIST AND COULD NOT CANCEL THE FIRE LIGHT. THE FLIGH - [SDR CED2006F00014](https://openairdocs.org/sdr/CED2006F00014), May 19, 2005: ELEMENT. FALSE INDICATION. AFTER TAKEOFF AT FLIGHT LEVEL 220, THE CREW OBSERVED A FIRE INDICATION LIGHT ON THE NR 1 ENGINE. THE FLIGHT CREW FOLLOWED STANDARD EMERGENCY PROCEDURES AND RETU - [SDR KC82005F00003](https://openairdocs.org/sdr/KC82005F00003), Jan 24, 2005: SQUAT SWITCH. FAILED. AFTER TAKEOFF, THE LANDING GEAR FAILED TO RETRACT. PILOT RETURNED TO DEPARTURE. FOUND LT MAIN GEAR SQUAT SWITCH FROZEN AND THE INTERNAL MICRO SWITCHES REMAINED - [SDR CED2004F00002](https://openairdocs.org/sdr/CED2004F00002), May 19, 2004: FIRE DETECTOR. MALFUNCTIONED. AFTER TAKEOFF AT FLIGHT LEVEL 220 THE CREW OBSERVED A FIRE INDICATION LIGHT ON THE NR 1 ENGINE. THE FLIGHT CREW FOLLOWED STARNDARD EMERGENCY PROCEDURES AND RETU - [SDR 00140](https://openairdocs.org/sdr/00140), May 14, 2004: ENGINE. FLAMED OUT. PILOT REPORTED LT ENGINE FLAMED OUT AT FL430 IN SEVERE TURBULANCE ON TRIP FROM HKS TO LRD. ENGINE RELET NORMALLY AT FL 250. CONTINUED TRIP TO LRD. MAINTENANCE P - [SDR X5E2003F00000](https://openairdocs.org/sdr/X5E2003F00000), Sep 15, 2003: WINDSHIELD. FAILED. LEFT WINDSHIELD WAS REPLACED WITH A PMA PART ON 12/8/1999. ON 7/3/2001 A BLISTER/ BUBBLE HAD FORMED IN THE INNER PLY AND WAS POLISHED OUT BY THE WINDOW MANUFACT - [SDR 9903N76CK](https://openairdocs.org/sdr/9903N76CK), Sep 10, 2003: STARTER GEN. VIBRATION. AIRCRAFT DEVELOPED VIBRATION. REPLACED LT STARTER GENERATOR WITH SERVICEABLE REPAIRED UNIT, GROUND OPERATIONAL CHECK GOOD. NO RECOMMENDATION FOR PREVENTION. - [SDR 00111](https://openairdocs.org/sdr/00111), Sep 10, 2003: CONTROLLER. INOPERATIVE. PILOT REPORTED PRESSURIZATION PROBLEMS CABIN ALTITUDE INCREASING WITH ALTITUDE, RETURN TO DEPARTURE AIRPORT. WILL UPDATE REPORT AFTER MAINTENANCE. REMOVED AND R - [SDR 00106](https://openairdocs.org/sdr/00106), Aug 25, 2003: TRANSDUCER. MALFUNCTIONED. PILOT REPORTED AT V1 NOSE OF AIRCRAFT OSCILATED UP AND DOWN, ABORTED TAKEOFF. AIRCRAFT WENT INTO OVERRUN AREA, NO DAMAGE TO AIRCRAFT OR AIRPORT. TAXIED BACK TO - [SDR 2003F00265](https://openairdocs.org/sdr/2003F00265), Mar 29, 2003: HOSE. DAMAGED. THE AIRCRAFT EXPERIENCED A FLAME OUT ON THE NR 1 ENGINE AT FL400. ENGINE RESTARTED AT FL250, THE AIRCRAFT ARRIVED IN PHX WITHOUT FURTHER INCIDENT. ENGINE INSPEC - [SDR 00127](https://openairdocs.org/sdr/00127), Jan 7, 2003: GYRO. MALFUNCTIONED. PILOT REPORTED AFTER DEPARTING ADS THE CO-PILOTS HIS FLAGGED, RETURN TO ADS FOR MAINTENANCE, HEADING FLAG ON CO-PILOT HIS OPERATES NORMAL ,FOUND BAD CONNECTION - [SDR KC82002F00005](https://openairdocs.org/sdr/KC82002F00005), Oct 23, 2002: GASKET. MISINSTALLED. THE LEFT AIRCRAFT LOW PRESSURE FUEL LIGHT CAME ON AS THE ENGINES WERE POWERED UP. TROUBLE SHOT LEFT FUEL SYSTEM AND FOUND THAT THE LOW PRESSURE FUEL FILTER GASK - [SDR EA11200202951](https://openairdocs.org/sdr/EA11200202951), Oct 22, 2002: INDICATOR. MALFUNCTIONED. RT THRUST REVERSER ILLUMINTED IN FLIGHT, SYSTEM OPERATED CORRECTLY IWA MFG MM. VISUAL INSPECTION REVEALED STICKY LATCHES AND DEFECTIVE T/R ACCUMULATOR. AWAITING - [SDR ECA2002F00002](https://openairdocs.org/sdr/ECA2002F00002), Oct 1, 2002: ACCUMULATOR. LEAKING. RT THRUST REVERSER ARM LIGHT ILLUMINATED IN FLIGHT ON LEG NR 2. A/C RETURNED TO BASE. GROUND OPS CHECK WAS PERFORMED, SYSTEM WAS OPERATING CORRECTLY IAW MM. VIS - [SDR CED2002F00000](https://openairdocs.org/sdr/CED2002F00000), Sep 5, 2002: REGULATOR. CRACKED. AIRCRAFT WAS ENROUTE, LOST HYDRAULIC PRESSURE. AIRCRAFT DIVERTED, MAINTENANCE FOUND HYDRAULIC PRESSURE REGULATOR LEAKING. THE VALVE BODY WAS CRACKED AT ONE OF T - [SDR 00034](https://openairdocs.org/sdr/00034), Jul 11, 2002: ENGINE. FLAMED OUT. AIRCRAFT EN ROUTE FROM ADDISON TX TO WINDSOR CANADA RT ENGINE FLAME-OUT CLIMBING FROM 390 TO 410. RESTART NORMAL, CLIMB BACK TO 410 AND CONTINUED TRIP. PILOT IN - [SDR 00029](https://openairdocs.org/sdr/00029), May 29, 2002: ENGINE. FLAMED OUT. ACFT ROUTE FROM FNT TO ADS CLIMBING THROUGH FL398 FOR FL430 RT ENGINE FLAME-OUT, REQUEST LOWER ALT FL260. ENGINE RESTARTED AND CLIMB BACK TO FL390 PROCEEDED TO - [SDR 00017](https://openairdocs.org/sdr/00017), Apr 19, 2002: SQUAT SWITCH. OUT OF ADJUST. AIRCRAFT DEPARTED YIP, SELECTED GEAR UP, MAIN GEAR DOOR RED LIGHTS STAYED ON. RETURNED TO DEPARTURE AIRPORT. MAINTENANCE FOUND RT SQUAT SWITCH OUT OF ADJUSTMENT - [SDR ECA2002F00001](https://openairdocs.org/sdr/ECA2002F00001), Apr 1, 2002: SEAL. TORN. CABIN ALTITUDE REACHED 10,000 FT MAXIMUM AIRFLOW WAS APPLIED AND CABIN WAS RESTORED. DECENT FOLLOWED WITH FLOW ON UNTIL 1500 FT PRIOR TO LANDING. REQUIRED MAX A - [SDR ECA2002F00000](https://openairdocs.org/sdr/ECA2002F00000), Apr 1, 2002: SEAL. TORN. CABIN ALTITUDE REACHED 10,000 FT MAX., AIRFLOW WAS APPLIED AND CABIN WAS RESTORED. DECENT FOLLOWED WITH FLOW ON UNTIL 1500 FT PRIOR TO LANDING. REQUIRED MAX AIR - [SDR 8292001N39CK](https://openairdocs.org/sdr/8292001N39CK), Aug 31, 2001: SWITCH. FAILED. LANDING GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO AIRPORT. UNEVENTFUL LANDING ACCOMPLISHED. REPLACED RIGHT MAIN GEAR TRUNNION SWITCH WITH NEW AND ADJUSTED IN - [SDR BSY2001F00014](https://openairdocs.org/sdr/BSY2001F00014), Jul 19, 2001: ENGINE. FLAMED OUT. AIRCRAFT WAS AT FL 440 CLIMBING ABOVE SOME STORMS, RIGHT ENGINE FLAMED OUT DUE TO HEAVY TURBULENCE WHICH CAUSED INTERRUPTION OF AIR INTO INLET. AIRCRAFT DESCEND - [SDR 60701N28CK](https://openairdocs.org/sdr/60701N28CK), Jun 8, 2001: SWITCH. DEFECTIVE. AIRCRAFT HYDRAULIC PRESSURE FLUCTUATES. FOUND RIGHT M.L.G. TRUNNION SWITCH OUT OF RIG CAUSING INBOARD GEAR DOORS TO CYCLE SEVERAL TIMES DURING RETRACTION. ADJUS - [SDR 20010525CW003](https://openairdocs.org/sdr/20010525CW003), May 7, 2001: ENGINE. FLAMED OUT. RIGHT HAND ENGINE FLAMED OUT DURING MAX ACCELERATION CHECK. ENGINE WAS RESTARTED AND UNEVENTFUL LANDING ACCOMPLISHED. COMPLIED WITH LEARJET SSK959 REPLACEMENT O - [SDR 2401N813JW](https://openairdocs.org/sdr/2401N813JW), Feb 6, 2001: SQUAT SWITCH. INOPERATIVE. LANDING GEAR WOULD NOT RETRAACT. AIRCRAFT RETURNED TO BASE. REPLACED RT SQUAT SWITCH WITH NEW. OPERATIONAL CHECK OF LANDING GEAR EXTENSION AND RETRACTION SYSTEM - [SDR 20010312CW016](https://openairdocs.org/sdr/20010312CW016), Jan 24, 2001: CONNECTOR. DAMAGED. LANDING GEAR WOULD NOT EXTEND NORMALLY. PERFORMED EMERGENCY GEAR EXTENSION. UNEVENTFULL LANDING ACCOMPLISHED. REPLACED LOOSE SOCKET AT GEAR SELECTOR SWITCH CONN - [SDR 20010112SG033](https://openairdocs.org/sdr/20010112SG033), Oct 31, 2000: ELEMENT. CHAFED. PILOT REPORTED RIGHT ENGINE FIRE LIGHT ILLUMINATED ON THE APPROACH TO FRG. INSPECTED AND TROUBLESHOT. FOUND FIRE LOOP ELEMENT ON THE RIGHT ENGINE CHAFING ON THE - [SDR 20001025SH023](https://openairdocs.org/sdr/20001025SH023), Sep 25, 2000: EXCITER. FAILED. MWD - ON START, LEFT ENGINE WOULD NOT START. FOUND IGNITION EXCITER NOT FIRING TOP OR BOTTOM IGNITER PLUGS. (X) - [SDR 99ZZZX4416](https://openairdocs.org/sdr/99ZZZX4416), Nov 18, 1999: ACTATOR. LEAKING. AIRCRAFT WAS ON FINAL APPROACH TO LAND WHEN GEAR WAS SELECTED DOWN. CREW REALIZED NO HYDRAULIC PRESSURE. DECLARED AN EMERGENCY. BLEW THE GEAR DOWN. LANDED WITHO - [SDR 99ZZZX4247](https://openairdocs.org/sdr/99ZZZX4247), Oct 30, 1999: ENGINE. FLAMED OUT. DURING CLIMB-OUT, THE LEFT ENGINE EXPERIENCED A FLAME OUT. THE FLIGHT CREW SAID THEY HEARD A POP AND EXPERIENCED ENGINE INDICATIONS ON THE LEFT ENGINE ROLL BACK - [SDR 99ZZZX3511](https://openairdocs.org/sdr/99ZZZX3511), Aug 23, 1999: TIRE. FAILED. THREE MAIN WHEEL TIRES BLEW ON LANDING. REPLACED ALL MAIN WHEEL AND BRAKE ASSEMBLIES WITH SERVICEABLE UNITS. FUNCTIONAL CHECK OF ANTI-SKID SYSTEM AND PARKING BR - [SDR 99ZZZX3059](https://openairdocs.org/sdr/99ZZZX3059), Jul 23, 1999: BRACKET. DAMAGED. NOSE WHEEL UNSAFE LIGHT REMAINED ILLUMINATED AFTER LANDING GEAR WAS SECURED UP. AIRCRAFT RETURNED TO FRG. LANDING GEAR SELECTED DOWN AND SHOWED SAFE. AIRCRAFT M - [SDR 99ZZZX2967](https://openairdocs.org/sdr/99ZZZX2967), Jul 22, 1999: ACTUATOR. LEAKING. AIRCRAFT LOST HYDRAULIC PRESSURE. RIGHT HAND INBOARD GEAR DOOR ACTUATOR LEAKING HYDRAULIC FLUID. REPLACED RIGHT INBOARD GEAR DOOR ACTUATOR WITH SERVICEABLE UNIT - [SDR 99ZZZX2269](https://openairdocs.org/sdr/99ZZZX2269), May 14, 1999: BRAKE. FAILED. ANTI-SKID FAILED TO CYCLE ON TOUCH DOWN. REPLACED ALL MAIN WHEEL AND BRAKE ASSEMBLIES WITH SERVICEABLE UNITS. REPLACED THE ANTI-SKID TRANSDUCERS WITH SERVICEABL - [SDR 99ZZZX1360](https://openairdocs.org/sdr/99ZZZX1360), Mar 1, 1999: O RING. LEAKING. WHILE EN ROUTE, FLIGHT CREW NOTICED LT RPM FLUCTUATION. ADJUSTMENT OF POWER LEVER ONLY REDUCED RPM. ENGINE POWER WAS LOST. CREW ELECTED TO DIVERT TO TYS AND AN - [SDR 99ZZZM131](https://openairdocs.org/sdr/99ZZZM131), Jan 3, 1999: BLOWER. FAILED. AFTER DEPARTURE FROM BCT, CREW NOTICED ELECTRICAL BURNING ODOR IN COCKPIT/CABIN. DIVERTED TO FXE. FOUND COCKPIT AIRCONDITIONING BLOWER FAN DISTORTED AND JAMMED - [SDR 98ZZZX4619](https://openairdocs.org/sdr/98ZZZX4619), Nov 10, 1998: SEAL. DAMAGED. WHILE EN ROUTE TO YIPSILANTI, THE RT OIL PRESSURE WAS DECREASING FOLLOWED BY RT GENERATOR FAILURE. A PRECAUTIONARY ENGINE SHUT DOWN WAS MADE AND AIRCRAFT DIVERT - [SDR 99ZZZX784](https://openairdocs.org/sdr/99ZZZX784), Nov 5, 1998: BATTERY PACK. DISCHARGED. EMERGENCY BATTERY PACK DISCHARGED. - [SDR 98ZZZM906](https://openairdocs.org/sdr/98ZZZM906), Oct 17, 1998: IGNITOR BOX. FAILED. RIGHT ENGINE FLAMED OUT AT FL 400, DESCENDED BELOW FL 250, ATTEMPTED RESTART 3 TIMES, SECURED ENGINE LANDED ILM. FOUND IGNITOR BOX. INOP, REPLACED IGNITOR BOX G All 71: https://openairdocs.org/model/learjet-25/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Gates Lear Jet 25](https://openairdocs.org/model/gates-lear-jet-25): 1 registered aircraft, registry code 5170509 - [Air & Space America 25](https://openairdocs.org/model/air-space-america-25): 0 registered aircraft, registry code 0440105 - [White L J 25](https://openairdocs.org/model/white-l-j-25): 0 registered aircraft, registry code 05634XU - [Skyways Air Transportation 2.5](https://openairdocs.org/model/skyways-air-transportation-2-5): 0 registered aircraft, registry code 0610197 --- 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.