# Service difficulty reports: Gates Learjet 55C A list on [Gates Learjet 55C](https://openairdocs.org/model/gates-learjet-55c.md). Newest first. General aviation reporting is voluntary. - [SDR CJPA202001210001](https://openairdocs.org/sdr/CJPA202001210001.md): Hydraulic Line · split · Jan 20, 2020 · N322GC · Lear 55C · Hydraulic System, Main > 20 MINUTES INTO CRUISE AT FL380 PIC NOTICED A LOW HYDRAULIC PRESSURE AMBER LIGHT ON THE ANNUNCIATOR. A QUICK LOOK AT THE HYDRAULIC PRESSURE GAUGE SHOWED ZERO PRESSURE IN THE HYDRAULIC SYSTEM. PIC AND FO TOOK OUT THE QRH AND FOLLOWED THE APPROPRIATE CHECKLIST. - [SDR 2020F00047](https://openairdocs.org/sdr/2020F00047.md): Tire · failed · Nov 14, 2019 · N178AM · Lear 55C · Tire > DURING A NORMAL TAKEOFF ROLL ON 19L AT KLAS ONE OF THE LEFT MAIN TIRES BLEW DUE TO A SUSPECTED ENCOUNTER WITH FOD AT APPROXIMATELY 105 KNOTS WITH A V1 TAKEOFF DECISION SPEED OF 136; THIS WAS ASSOCIATED WITH AN AUDIBLE "BANG". SHORTLY THEREAFTER THE AIRCRAFT BE - [SDR 2017F00178](https://openairdocs.org/sdr/2017F00178.md): Flow Valve · faulty · Sep 20, 2017 · N178AM · Lear 55C · Cabin Pressure Control System > ON DEPARTING KCXY "CABIN ALT" LIGHT ILLUMINATED PASSING THROUGH 10,000 FEET. CAPTAIN ELECTED TO LAND AT KMDT INSTEAD OF THE FILED DESTINATION (FXE). - [SDR A8JA201606040022](https://openairdocs.org/sdr/A8JA201606040022.md): Circuit Breaker · tripped · Jun 4, 2016 · N552T · Lear 55C · AC Power Distribution System > DURING APPROACH, FLIGHT CREW HEARD A POP AND EXPERIENCED A LOSS OF FLIGHT INSTRUMENTS AND RADIOS. PIC REPORTED ALL EFIS SCREENS, ALTIMETERS, AIRSPEED INDICATORS, FLAP INDICATION, GEAR INDICATION, YAW DAMPER, AND PRIMARY AND SECONDARY TRIMS INOPERATIVE. INVES - [SDR 2016FA0000016](https://openairdocs.org/sdr/2016FA0000016.md): Strut · leaking · Dec 21, 2015 · N717HB · Lear 55C · Nose/Tail Landing Gear Strut/Axle > UPON REACHING CRUISE ALTITUDE, THE GEAR UNSAFE INDICATOR ILLUMINATED. UPON INSPECTION OF THE NLG IT, WAS DISCOVERED THAT THE NITROGEN/FLUID DEPLETED THE PISTON ENOUGH TO CAUSE A SLIGHT MISALIGNMENT IN THE NOSE WHEEL WELL, CAUSING AN UNSAFE INDICATION IN THE F - [SDR 2011FA0000457](https://openairdocs.org/sdr/2011FA0000457.md): Wheel Half · failed · Jul 10, 2011 · N385RC · Lear 55C · Wheel/Ski/Float > PRIOR TO LIFTOFF, THE OUTER RIM OF THE RIGHT INBD MAIN WHEEL SEPARATED FROM THE WHEEL ASSEMBLY. THE FLIGHT CREW WAS NOTIFIED BY RADIO THAT A "TIRE BLEW" DURING TAKEOFF. THE ACFT RETURNED TO BASE AND MADE AN UNEVENTFUL LANDING. BOTH RT MAIN WHEEL ASSEMBLIES - [SDR OZCA11082009](https://openairdocs.org/sdr/OZCA11082009.md): Valve · defective · Nov 8, 2009 · N211BC · Lear 55C · Cabin Pressure Control System > DURING A REPOSITIONING FLIGHT FROM FLL TO ORL AFTER DEPARTURE THE CAPTAIN NOTICED SMOKE FORMING IN THE CABIN AND RETURNED TO FLL FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE EMERGENCY PRESSURIZATION VALVE TO BE DEFECTIVE. THE U - [SDR A8J2006F00001](https://openairdocs.org/sdr/A8J2006F00001.md): Hinge · failed · Oct 30, 2006 · N552TL · Lear 55C · Landing Gear Doors > AIRCRAFT DEPARTED, DURING CLIMB AT ABOUT 13,000 FT THE CREW NOTICED A STRANGE AIRFLOW NOISE AS IF A GEAR DOOR WAS OPEN, ALL INSTRUMENT INDICATIONS WERE GOOD. (3 GREEN). UPON LANDING, VISUAL INSPECTION NOTED THAT RT GEAR OB DOOR WAS MISSING. VISUAL INSP FOUN - [SDR CIEA200500011](https://openairdocs.org/sdr/CIEA200500011.md): Latch · out of adjust · Jul 24, 2005 · N113YS · Lear 55C · Engine Thrust Reverser > AFTER TAKEOFF, THE LEFT THRUST REVERSER LIGHT FLASHED ON THEN WENT OUT. THE PILOT ELECTED TO LAND AND HAVE IT LOOKED AT. THERE WAS NO EVIDENCE THAT THERE WAS A PROBLEM. THE UNIT WORKED GOOD ON THE GROUND. THE T/R'S WERE PINNED AND DEFERRED AND THE FLIGHT C - [SDR 2000ZZZX583](https://openairdocs.org/sdr/2000ZZZX583.md): Rivet · misinstalled · Feb 7, 2000 · Lear 55C · Fuselage Miscellaneous Structure > SIX RIVETS MISSING FROM RT FUSELAGE BETWEEN MIDDLE AND AFT WING ATTACH POINTS. BS 401.92 AND BS 410.30. THESE RIVETS DO NOT GO THROUGH THE PRESSURE VESSEL, BUT DO GO THROUGH RT FUSELAGE OVERWING LONGERON. THREE RIVETS MISSING FROM AFT SIDE OF MIDDLE ATTACH - [SDR 99ZZZX3497](https://openairdocs.org/sdr/99ZZZX3497.md): Fiting · failed · Jul 29, 1999 · N10CR · Lear 55C · Landing Gear Doors > AFTER TAKEOFF DURING GEAR REATRACTION, LOUD NOISE WAS HEARD IN CABIN. ALL SYSTEMS APPEARED NORMAL. UPON LANDING CREW FOUND RIGHT OUTBOARD GEAR DOOR ATTACH FITTING BROKEN AT TURNBUCKLE ATTACH POINT, AND BOLT, NUT, AND BUSHING STILL IN TURNBUCKLE. SUBMITTER RE - [SDR NI2R032L](https://openairdocs.org/sdr/NI2R032L.md): Latch Pin Arm · cracked · Feb 1, 1998 · N40CR · Lear 55C · Passenger/Crew Doors > PERFORMED EDDY CURRENT TEST PER LEAR NDT MANUAL PART 3 52-10-01. DETECTED LINEAR INDICATION AT AREA 'F' AT APPROX 4 O'CLOCK POSITION. REFERENCE ST LOUIS TEST LAB 98F-0350. ACFT LANDINGS: 1,621. ACFT TT: 2,372 HOURS. TEST PERFORMED MARCH 2, 1998. (X) - [SDR 97ZZZX3504](https://openairdocs.org/sdr/97ZZZX3504.md): Coupling · failed · Jul 16, 1997 · N111US · Lear 55C · Aircraft Fuel Distribution System > CLAMP ON COUPLING OPENED AND FELL OFF. COUPLING LOCATED IN FUEL SUPPLY LINE JUST BELOW LEFT FUEL FILTER IN TAIL CONE. AIRCRAFT CREW NOTICED DECREASING FUEL QUANTITY AND DIVERTED TO BNA. LEFT ENGINE THROTTLE SET TO IDLE WHEN PROBLEM NOTICED. ENGINE FLAMED OU - [SDR 95ZZZX5253](https://openairdocs.org/sdr/95ZZZX5253.md): Clamp · defective · Sep 7, 1995 · N40CR · Lear 55C · Aircraft Fuel Distribution System > INSPECTION FOUND FUEL FILTER CLAMP FAULTY. THIS IS FOLLOW-UP ON PREVIOUSLY SUBMITTED REPORT. SUBMITTER RECOMMENDED THAT CLAMPS UTILIZED IN AREAS SUBJECT TO VIBRATION BE SAFTIED WITH WIRE TO PREVENT INADVERTENT OPENING. - [SDR 95ZZZX3690](https://openairdocs.org/sdr/95ZZZX3690.md): Pump · shaft stripped · Jul 7, 1995 · N40CR · Lear 55C · Hydraulic Pump (Electric/Engine), Main > NR 1 ENGINE DRIVEN HYDRUALIC PUMP SHAFT WAS COMPLETELY STRIPPED OF ALL GEAR MATING SURFACE AREA RESULTING IN NO HYDRAULIC OUTPUT FROM THAT ENGINE. FOUND ON INITIAL ENGINE HOT SECTION INSPECTION. - [SDR 95ZZZX3596](https://openairdocs.org/sdr/95ZZZX3596.md): Clamp · opened · Jul 1, 1995 · N40CR · Lear 55C · Aircraft Fuel Distribution System > MAIN FUEL LINE SUPPLY FROM RT WING TO RT ENGINE CLAMP OPENED UP WHILE AIRCRAFT WAS IN FLIGHT CAUSING FUEL LOSS. FUEL IMBALANCE AND RIGHT ENGINE FLAME-OUT AFTER LANDING. THIS CLAMP IS EASILY OPENED BY JUST BUMPING IT. RIGHT MAIN FUEL LINE HAS NO STAND-OFF TO ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE aircraft_model_key = '55C' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/gates-learjet-55c/reports --- 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.