MD Helicopters MD 900

Service difficulty reports · 435

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Query with SQL
duckdb -csv -c "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 = 'MD900'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR QMLA2025111620114Blade · delaminatedTRIM TAB SECTION ON MRB NR 4 WAS DISCOVERED TO BE DELAMINATED ON POST FLIGHT WALK AROUND. REMOVED AND REPLACED MRB.Nov 15, 2025 · N902CH · Doug MD900 · Main Rotor BladesSDR QMLA2018092718104Bolt · shearedMR DRIVE RING BOLT FOUND TO BE SHEARED DURING ANNUAL INSPECTION OF MR HEAD AND DRIVE SYSTEMSep 24, 2018 · N900UM · Doug MD900 · Main Rotor SystemSDR QMLA2018040718042Warning Light · false activationWHILE ENROUTE, THE TRANSMISSION CHIP LIGHT ILLUMINATED APPROXIMATEDLY FIFTEEN MINUTES INTO THE FLIGHT. STAYED ON FOR ABOUT 15 SECONDS BEFORE GOING OUT. CAME BACK AND OUT THREE MORE TIMES BEFORE LANDING. THE TRANSMISSION TEMPERATURE AND OIL PRESSURE REMAIApr 7, 2018 · N900UM · Doug MD900 · Main Rotor GearboxSDR 2018FA0000123Tab · damagedA SEGMENT OF THE TRIM TAB OF A MAIN ROTOR BLADE WAS LOST DURING FLIGHT. THE TRIM TAB WAS REPAIRED 201FHRS BEFORE THIS WAS DETECTED. THE SITUATION WAS DETECTED DURING A 100HRS INSPECTION. REPAIRED THE MAIN ROTOR BLADE BASED ON AN ENGINEERING DISPOSITION FROMApr 3, 2018 · Doug MD900 · Main Rotor BladesSDR CA160121022Hose · cracked(CAN) AFTER SHUT DOWN FOLLOWING A SHORT UNRELATED TEST FLIGHT, TRANSMISSION OIL WAS DISCOVERED COVERING THE TRANSMISSION DECK AND FLOWING DOWN THE SIDES OF THE FORWARD FUSELAGE. APPROXIMATELY 5 QUARTS OF THE 10 QUART CAPACITY IN THE MAIN TRANSMISSION HAD LEAKEJan 21, 2016 · Doug MD900 · Engine Oil CoolerSDR CA151007018Compressor · leaking(CAN) THE CREW OF THE HELICOPTER WAS FORCED TO MAKE AN EMERGENCY LANDING ON THE OUTSKIRTS OF PARIS DUE TO LEFT ENGINE LOW OIL PRESSURE AND SMOKE IN THE CABIN. TROUBLESHOOTING FOUND THE COMPRESSOR WET WITH OIL (POSSIBLY LEAKING FROM THE NR 3 BEARING CAVITY) ANDSep 30, 2015 · Doug MD900 · Turbine Engine Compressor SectionSDR CA150901001Engine · power loss(CAN) DURING TAKE-OFF THE EEC WARNING LIGHT CAME ON FOR A SHORT TIME AND ENGINE NR 1 DID NOT ACCELERATE. AFTER ANOTHER TAKE-OFF ATTEMPT THE ENGINE SPOOLED DOWN AND WENT OFF. THE PILOT TRIED TO RESET THE EEC BUT WITH NO SUCCESS. FIELD SERVICE REP. WILL GO ON SIAug 20, 2015 · Doug MD900 · Engine (Turbine/Turboprop)SDR QMLA2015050715037Motor · faultyUPON DESCENT DURING FINAL APPROACH TO LANDING SITE, THE PILOT & CREW REPORTED TO EACH OTHER THE DETECTION OF AN ELEC BURNING ODOR THAT CONTINUED TO GET STRONGER. AFTER LANDING & POWERING DOWN WITHIN SECONDS THE ODOR DISSIPATED. TROUBLE SHOT SYS & FOUND THAT May 7, 2015 · N900UM · Doug MD900 · Cabin Cooling SystemSDR CA141014021Drive Ring · cracked(CAN) WHILE STATIC WITH BLADES UNTIED THE AIRCRAFT WAS SUBJECTED TO ROTOR WASH FROM A HEAVY HELICOPTER. A PREFLIGHT INSPECTION THE FOLLOWING DAY REVEALED THE MAIN ROTOR DRIVE RING WAS CRACKED.Oct 12, 2014 · Doug MD900 · Main Rotor HeadSDR CA141008011Throttle · malfunctioned(CAN) UPON LANDING, THE PILOT LOWERED THE COLLECTIVE AND 1 ENGINE BEGAN TO ACCELERATE. THE PILOT RAISED THE COLLECTIVE TO APPLY TORQUE TO REDUCE ENGINE SPEED. THIS SEEMED TO LOWER THE SPEED MOMENTARILY. THE ENGINE THEN BEGAN TO ACCELERATE AGAIN, THE PILOT TUSep 21, 2014 · Doug MD900 · Power LeverSDR QMLA2014051314052Battery Box · crackedDURING AN ONGOING MX INSPECTION, MULTIPLE CRACKS WERE FOUND ON LOWER LT BATTERY BOX CLOSE OUT FLANGE. OBTAINED ENGINEERING SERVICE REPORT, ESR900-09201-CP1 DESCRIBING THE REPAIR. THIS REPAIR HAS BEEN CLASSIFIED AS MINOR FROM THE MANUFACTURER. THIS ACFT CONMay 13, 2014 · N900UM · Doug MD900 · Battery Box StructureSDR QMLA2014050614051Blade · crackedDURING THE 12 MONTH AAIP INSPECTION, FOUND 7 OF 13 NOTAR BLADES WITH SMALL CRACKS COMING FROM THE DRAIN HOLE OF EACH BLADE CUFF. REPLACEMENT PARTS HAVE BEEN ORDERED & THE ACFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION.May 6, 2014 · N900UM · Doug MD900 · Tail Rotor BladesSDR CA140224011Connector · contaminated(CAN) DURING FINAL APPROACH, THE MAIN GEARBOX FIRE INDICATION AND AUDIO WARNING WERE ACTIVATED ACCOMPANIED BY A STRONG BURNING ODOR AND SMALL AMOUNT OF SMOKE IN THE CABIN. THE CREW REQUESTED FIRE BRIGADE UPON LANDING. ENGINES WERE SHUTDOWN ON THE GROUND. POFeb 17, 2014 · Doug MD900 · Turbine Engine System WiringSDR QMLA2014012214010Transmission · making metalMULTIPLE MAIN TRANSMISSION CHIP LIGHTS, AFTER FOLLOWING CSP 900RMM 2 CHAPTER 63-20-00 & TABLE 601. CHIPS INDICATED ALL UNDER THE LIMITS OF THE CHAPTER BUT COME ON EACH AIRCRAFT RUN UP.Jan 22, 2014 · N902LC · Doug MD900 · Engine/Transmission CouplingSDR STRA20131112101Display · inoperativeDURING FLIGHT, PILOT REPORTED NR 1 AND 2 ENGINES, AND MAIN TRANSMISSION FIRE WARNING LIGHTS . AT THE SAME TIME, THE ENGINE MONITORING DISPLAY (IIDS) WENT BLANK. PILOT PROCEDED TO MAKE A PRECAUTIONARY LANDING. INSPECTION OF THE ACFT REVEALED NO EVIDENCE OF FINov 10, 2013 · N902YN · Doug MD900 · Rotor Drive Indicating SystemSDR QMLA2013F00175Wire · chafedNR 2 ENGINE FIRE LIGHT ILUMINATED AND FAULT RECORDED IN IIDS. FOUND FIRE LOOP WIRE SHIELDING CHAFED THROUGH NEAR THE BACK SIDE OF THE NR 2 ENGINE FIRE WALL.Aug 31, 2013 · N900UM · Doug MD900 · Fire Protection System WiringSDR CA130822007Fmu · malfunctioned(CAN) AFTER AN UNEVENTFUL CLIMB, THE CHECKS WERE NORMAL BUT LESS THAN A MINUTE LATER THE NR WAS NOTED AT 101 PERCENT SHORTLY FOLLOWED BY 102 PERCENT. THE CREW REPORTED AS THE DESCENT WAS IMMINENT, THE POWER RESPONSE AND ON LOWERING THE COLLECTIVE THE NR INCREAug 17, 2013 · Doug MD900 · Fuel Controlling SystemSDR CA130729002Engine · power loss(CAN) AFTER DROPPING A SLINGED LOAD, THE NR 2 ENGINE FROZE AT HIGH TORQUE FOR 20 SEC. THE NR 1 ENGINE REDUCED POWER ACCORDINGLY BUT THE MAIN ROTOR OVERSPED TO 104 PERCENT. TROUBLESHOOTING IS ON-GOING.Jul 15, 2013 · Doug MD900 · Engine (Turbine/Turboprop)SDR CA130617002Engine · shutdown(CAN) THE PILOT REPORTED AN ELECTRONIC ENGINE CONTROL SHUTDOWN FROM THE LT ENGINE. THE PILOT REQUESTED MORE POWER FROM RT ENGINE TO FLY OVER THE CABLES IN FRONT OF HIM. THE PILOT COMPLETED AN UNEVENTFUL LANDING AND SHUTDOWN THE ENGINES.Jun 10, 2013 · Doug MD900 · Engine (Turbine/Turboprop)SDR CA130508014Screw · missing(CAN) FOD DAMAGE TO NOTAR FAN. STATOR BLADE RETAINER SCREW FOUND MISSING.May 3, 2013 · Doug MD900 · Tail Rotor SystemSDR STRA20130417101Control Rod · faultyON DAILY INSPECTION FOR COMPLIANCE OF DAILY AD 2004-16-08 FOR THE NOTAR FAN CONTROL ROD, IT WAS FOUND THAT SAFETY LANDYARDS ON THE FORCE LIMITING ASSY WERE TIGHT. UPON FURTHER INVESTIGATION FOUND THAT LANDYARDS WERE TIGHT WHEN MOVING LEFT AND RIGHT PEDALS FULApr 16, 2013 · N902TX · Doug MD900 · Tail Rotor Control SystemSDR CA121211003Compressor · seized(CAN) CREW COMPLAINED OF POPPING NOISE WHEN GOING FROM IDLE TO FLY CONDITION. MECHANIC CONFIRMED NOISE AND COMMENCED COMPRESSOR WASHES AND RINSES. DURING THE RINSE CYCLE SPOOL DOWN THE MECHANIC NOTED A LOUD AND ABRUPT GRINDING NOISE. HE TRIED TO ROTATE THE CDec 3, 2012 · Doug MD900 · Turbine Engine Compressor SectionSDR CA121120005Hub · cracked(CAN) AD 2012-21-01 WAS CARRIED OUT IAW SB900-117. AN EDDY CURRENT INSPECTION WAS CARRIED OUT BY NDT AND WAS DETERMINED TO HAVE AN.1250" ANOMOLY. THE LOWER HUB WAS THEN REPLACED WITH A NEW ASSY WHICH DID NOT REQUIRE AD 2012-21-01 TO BE CARRIED OUT.Nov 10, 2012 · Doug MD900 · Main Rotor HeadSDR CA120716009Blade · fractured(CAN) AFTER TAKINGOFF FROM THE ROOF OF A HOSPITAL, DURING THE TRANSITION PHASE, THE CREW HEARD A LOUD NOISE FOLLOWED BY A POWER LOSS AND NR 1 ENGINE SHUTDOWN. THE CREW FLEW THE ACFT SINGLE ENGINE (OEI) AND PERFORMED AN UNEVENTFUL RUN-ON LANDING AT AIRPORT. Jul 8, 2012 · Doug MD900 · Turbine SectionSDR QMLA2012060912095Transmission · making metalCHIP LIGHT MAIN ROTOR TRANSMISSION.Jun 9, 2012 · N902LC · Doug MD900 · Main Rotor GearboxSDR CA111125009Blade · cracked(CAN) UPON DAILY INSPECTION, IT WAS DISCOVERED THAT THE OTBD L/E ABRASION STRIP WAS CRACKED BEYOND LIMITS. THE M/R BLADE WAS R & R WITH A RENTAL UNIT. THE BLADE IS CURRENTLY OUT FOR REPAIR.Nov 18, 2011 · Doug MD900 · Main Rotor BladesSDR CA111125008Bearing · separated(CAN) ON INSPECTION, ELASTOMERICS OF BEARING FOUND SEPARATED FROM THE CENTER MOUNT. BEARING WAS COMPLETELY UNSERVICEABLE.Nov 18, 2011 · Doug MD900 · Main Rotor HeadSDR QMLA2011050911056Impeller · damagedPART OF THE GASKET OF THE INLET SCREEN CAME LOOSE AND WAS INGESTED INTO THE ENGINE. ONE BLADE ON THE COMPRESSOR HAD DAMAGE THAT CAUSED A LOUD WHINING NOISE WHEN THE ENGINE WAS OPERATED. THE ONLY DAMAGE THAT CAN BE OBSERVED IS THE COMPRESSOR BLADES. IT IS BEMay 9, 2011 · N902LC · Doug MD900 · Turbine Engine Compressor SectionSDR QMLA2010071210034Blade · debondedDURING 100 HR INSP DAMAGE LOCATED APPROX 1.25 INCHES FROM THE OTBD END OF THE BLADE TIP, ALONG THE AFT EDGE OF THE ABRASION STRIP ON THE LOWER SURFACE, AND MEASURES 1.00 INCH WIDE BY .50 INCHES LONG (FWD/AFT). THE OVERALL SIZE OF THE DAMAGE IS ROUGHLY THE SIZJul 12, 2010 · N902LC · Doug MD900 · Main Rotor BladesSDR 2009FA0000674Fire Detector · false indicationFIRE WARNING LIGHT ILLUMINATED IN FLIGHT. THIS WAS A FALSE INDICATION GIVEN BY THE FIRE CONTROL BOX.Aug 7, 2009 · N905LF · Doug MD900 · Fire DetectionSDR 2009FA0000440Drive Shaft · corrodedDURING AN ANNUAL INSP THE MAIN ROTOR DRIVE SHAFT AND DRIVE PLATE WHERE REMOVED TO SATISFY THE 12 MONTH REQUIREMENT. WHILE REMOVING THE DRIVE SHAFT IT WAS FOUND THAT THE GREASE COATING ON LWR DRIVE SPLINE WAS DISCOLORED AND DEGRADED. FURTHER INSP SHOWED MOISJan 30, 2009 · N902PD · Doug MD900 · Engine/Transmission CouplingSDR L19A2008102400050Adapter · brokenTHE HELICOPTER WAS IN CRUISE FLIGHT AND THE VSCS ADAPTER BROKE IN TWO. THIS CAUSED THE A CONTROL PROBLEM WITH THE HELICOPTER UNTIL IT SLOWED BELOW 100 KTS. THE AIRCRAFT CAME BACK TO THE AIRPORT AND LANDED WITH NO PROBLEMS. THERE IS NOW A NEW AD ON THIS MATTEOct 19, 2008 · N902NM · Doug MD900 · Stabilizer ActuatorSDR 2008FA0000557Control Rod · brokenEXPERIENCED EXCESSIVE LT PEDAL (2-3 INCHES) DURING CRUISE FLIGHT AT 70 TO 80 PERCENT TRANSMISSION TORQUE. DURING POST FLIGHT FOUND THAT THE LT VERTICAL STABILIZER MOVED FREELY. FURTHER INSPECTION REVEALED THAT THE LT VERTICAL STABILIZER CONTROL SYSTEM (VSCS)Aug 1, 2008 · N902RN · Doug MD900 · Stabilizer ActuatorSDR CA071016007Bearing · failed(CAN) THE ENGINE CHIP DETECTOR ACTIVATED, ACCOMPANIED BY VIBRATION AND A TEMPERATURE INCREASE, AND THE ENGINE WAS SHUTDOWN IN FLIGHT. SUBSEQUENT INVESTIGATION REVEALED A DAMAGED NR3 BEARING AND RESULTANT TURBOMACHINERY DAMAGE. (TC NR 20071016007)Sep 8, 2007 · Doug MD900 · Turbine SectionSDR DLM90070977Cusp Web · crackedLT CUSP WEB OUT OF LIMITS, CRACKED AT LIGHTEN HOLE FS 873. REPAIRED CUSP WEB IAW MD-88 SRM 53-05D FIG 827D.Jul 31, 2007 · N907DA · Doug MD900 · Fuselage Miscellaneous StructureSDR DLM90070817Skin · dentedDENT NEAR STA 245 BETWEEN L-17L AND L-18L. CUT OUT DENT AND INSTALL REPAIR DOUBLER.Jun 24, 2007 · N903DA · Doug MD900 · Fuselage Main, Plate/SkinSDR DLM90070875None · noneTEMP REPAIR INSTALLED ON FUSELAGE SKIN AT RT CANT FRAME STA 1531 APPROX 16 IN UP FROM DOOR CUT OUT. REMOVED TEMP REPAIR AND INSTALLED PERM. REPAIR IAW MD90 SRM 53-00-01 FIG 4 VOL I.Jun 21, 2007 · N906DA · Doug MD900 · Standard Practices/StructuresSDR DLM90070761Skin · dentedUPPER FUSELAGE SKIN HAS 2 DENTS CONTAINED IN ONE BAY STA 218 LONGERON 17-18L. DEPTH = .031 BY MINOR = .75 DEPTH = .015 BY MINOR = .25 2ND DENT CLOSER THAN 1 INCH FROM STRUCTURE. REPAIRED SKIN IAW MD90 SRM 53-30-01 FIG 5.Jun 19, 2007 · N906DA · Doug MD900 · Fuselage Main, StructureSDR DLM90070760Attach Fitting · corrodedRT I/B VERTICAL STAB TO HORIZONTAL ATTACH PLATE HAS CORROSION ON PLATE FACE AND BORE. REPAIRED RT I/B VERTICAL STAB TO HORIZONTAL HINGE IAW MD90 SRM 55-30-05 PAR 5.Jun 3, 2007 · N906DA · Doug MD900 · Vertical StabilizerSDR DLM90070196Attach Angle · crackedTHE RT FUSELAGE TO VERTICAL STABILIZER ATTACH ANGLE WAS FOUND WITH A CRACK NEAR THE AFT END OF THE ANGLE. THE CRACK MEASURED 1" LONG AND IS TYPICAL OF CRACKS DOCUMENTED PER BAC S/B MD90-53-027. THE CRACK WAS TRIMMED OUT AND REPAIRED WITH A REPAIR ANGLE PER TMar 7, 2007 · N916DN · Doug MD900 · Fuselage, Stabilizer Attach FittingsSDR 2006FA0000620Hose · crackedPILOT NOTICED TRANSMISSION OIL PRESSURE INDICATION DROPPED FROM GREEN TO YELLOW TO RED. MADE UNSCHEDULED LANDING. FOUND FWD LT TRANSMISSION OIL COOLER HOSE LEAKING. HOSE IS A FLEXIBLE STAINLESS STEEL HOSE WITH A STAINLESS STEEL OUTER BRAID. HOSE WAS INSPECTEDJun 8, 2006 · N902PD · Doug MD900 · Main Rotor Mast/SwashplateSDR 2006FA0000501Oil Cooler · leakingFOUND WETTING OIL MAIN TRANSMISSION/ENGINE OIL COOLER CORE. REMOVED AND SENT OUT FOR EVALUATION. COOLER FOUND TO HAVE INTERNAL CORROSION THAT CAUSED MATERIAL LOSS AND SUBSEQUENT LEAKING. REPLACED COOLER WITH NEW. LEAK CHECK WAS SATISFACTORY.May 16, 2006 · N902PD · Doug MD900 · Engine Oil CoolerSDR 2006FA0000508Beam · crackedDURING SCHEDULED INSPECTION FOUND FLEXBEAM CRACKED IN LEG OF FLEXBEAM. REJECTED FLEXBEAM IAW INSPECTION CRITERIA IN MM. REPLACED WITH NEW FLEXBEAM.May 16, 2006 · N902PD · Doug MD900 · Main Rotor HeadSDR 2006FA0000507Beam · crackedDURING SCHEDULED INSPECTION FOUND FLEXBEAM CRACKED IN LEG OF FLEXBEAM. REJECTED FLEXBEAM IAW INSPECTION CRITERIA IN MAINTENANCE MANUAL. REPLACED WITH NEW FLEXBEAM.May 16, 2006 · N902PD · Doug MD900 · Main Rotor HeadSDR 2006FA0000506Hose · crackedDISCOVERED MAIN TRANSMISSION OIL HOSE FROM OIL COOLER TO MAIN TRANSMISSION LEAKING FROM STEEL BRAIDING. PULLED BACK BRAIDING AND FOUND HOSE TO BE CRACKED. REPLACED LINE WITH NEW. LEAK CHECK OF NEW LINE WAS SATISFACTORY. P/N 900D3409526-105.May 16, 2006 · N902PD · Doug MD900 · Main Rotor GearboxSDR 2006FA0000503Hose · crackedDISCOVERED MAIN TRANSMISSION OIL HOSE FROM OIL COOLER TO MAIN TRANSMISSION LEAKING FROM STEEL BRAIDING. PULLED BACK BRAIDING AND FOUND HOSE TO BE CRACKED. REPLACED LINE WITH NEW. LEAK CHECK OF NEW LINE WAS SATISFACTORY, P/N 900D3409526-105.May 16, 2006 · N902PD · Doug MD900 · Main Rotor GearboxSDR DLM90060376Wire Harness · damagedRETURN TO GATE DUE TO ELECTRICAL FUMES IN CABIN.APU AND LEFT ENGINE RUNNING. MOMENTARY LOSS OF ELECTRICAL POWER WITH EMERGENCY POWER COMING ON. EMERGENCY POWER IN USE LIGHT CAME ON WITH SWITCH IN ARM POSITION. APU HARNESS/STARTER AND R2-63 RELAY REPLACEMENTMay 13, 2006 · N916DN · Doug MD900 · APU System WiringSDR DLM90060350Hydraulic System · unknownRIGHT SYSTEM HYDRAULIC PRESSURE LOW AFTER TAKEOFF FROM SLC. REPLACED RIGHT SYSTEM RESERVOIR SERVICED THE RIGHT HYD SYSTEM. BLEED SYSTEM PERFORMED OP AND LEAK CHECK OF THE RIGHT ELEC AUX PUMP AND RIGHT ENGINE DRIVE PUMP. ALL CHECK GOOD AND NO LEAKS NOTED.May 1, 2006 · N910DN · Doug MD900 · Hydraulic System, MainSDR L192006F00000Line · wornON TRAINING FLIGHT, RT ENG FIRELIGHT CAME ON. PILOT COMPLIED WITH EMERGENCY PROCEDURES, THEN SHUT RT ENG DOWN AND DISCHARGED RT ENG FIRE BOTTLE, LANDED AC AND FIRE LIGHT WENT OUT. AC WAS CHECKED FOR FIRE IN ENG COMPT, NONE WAS FOUND. NO EVIDENCE OF FLAMES IApr 14, 2006 · N911AC · Doug MD900 · Engine Bleed Air SystemSDR 2006FA0000274Hose · crackedHOSE IS INSTALLED ON MD902 HELICOPTERS. MD P/N IS 900D3409526-105. HOSE IS USED FOR MAIN TRANSMISSION OIL COOLING. FOUND LARGE ACCUMULATION OF OIL ON TRANSMISSION DECK AFTER FLIGHT. HOSE WAS FOUND TO BE CRACKED IN ONE OF THE BELLOWS. (CORE OF HOSE IS STAINMar 1, 2006 · N902PD · Doug MD900 · Main Rotor Gearbox
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