Lycoming IO-540-AE1A5

Service difficulty reports · 924

Newest first. General aviation reporting is voluntary.

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 engine_model_key = 'IO540AE1A5'
  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 CA070518002Intake Valve · fractured(CAN) PILOT LANDED TO CONDUCT TASK AT WELL SITE. DURING ATTEMPTED START UP, THE AIRCRAFT WOULD NOT START. AFTER A SHORT TIME, THE PILOT ATTEMPTED AGAIN AND THE AIRCRAFT STARTED. IT RAN VERY ROUGH AND EXCESSIVE VIBRATIONS. PILOT TOOK THE ENGINE POWER UP TO CMay 16, 2007 · Robsin R44RAVENII · Reciprocating Engine Cylinder SectionSDR CA070511001Switch · defective(CAN) ACFT SHUTDOWN AT LEASE SITE. PILOT ATTEMPTED TO START THE ACFT TO CARRY OUT DAY AND ACFT FAILED TO START. FURTHER INVESTIGATION CONDUCTED BY AN AME FOUND ENGAGING SWITCH HAD FAILED. THE ACTUATOR ASSY WAS VERY DUSTY AND DIRTY FROM BELT DEBRIS. THE ACFT WAMay 8, 2007 · Robsin R44RAVENII · Engine CrankingSDR CA070503008Valve Stem · bent(CAN) AIRCRAFT WAS FLYING DURING A SEISMIC JOB. ENGINE LOST POWER AND ENGINE WAS RUNNING ROUGH. EMERGENCY LANDING TOOK PLACE. MAINTENANCE INVESTIGATED AND FOUND NR 1 CYLINDER DEFECTIVE. UPON FURTHER INVESTIGATION INTAKE VALVE STUCK OPEN AND CONTACTED PISTOApr 29, 2007 · Robsin R44RAVENII · Reciprocating Engine Cylinder SectionSDR CA070411004Switch · unserviceable(CAN) DURING GROUND RUN AND PRE-TAKEOFF CHECKS, THE CLUTCH FAILED TO ENGAGE. SWITCH V3-1001 IS SPRING LOADED AND BREAKS AND THE CLUTCH WILL NOT ENGAGE. THESE SWITCHES ARE A WEAK PART OF THE SYSTEM. (TC NR 20070411004)Apr 8, 2007 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA070307010Wire · chafed(CAN) GOVERNOR WAS LAZY AND SNAGGED BY PILOT. UPON FURTHER INVESTIGATION, THE MAGNETO WAS REMOVED AND PRIMARY COIL WIRE WAS TOUCHING AND CHAFING ON TACH POINT CONNECTOR. THIS MAY BE THE POSSIBLE CAUSE FOR LAZY GOVERNOR. NEW MAGNETO INSTALLED PROBLEM RECTIFIEMar 7, 2007 · Robsin R44RAVENII · Ignition System WiringSDR CA070226011Retainer · cracked(CAN) CRACKS AT OUTER RING BOLT HOLES. CLUTCH ASSY REMOVED AND IS BEING SENT TO MFG FOR WARRANTY. (TC NR 20070226011)Feb 24, 2007 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA070306001Reservoir · leaking(CAN) DURING INSPECTION HYDRAULIC FLUID FOUND VERY LOW, DETERMINED FLUID WAS LEAKING OUT OF THE VENT CAP ON HYDRAULIC RESERVOIR. FLUID TOPPED UP TO CENTER OF SIGHT GLASS. AIRCRAFT GROUND RAN, DETERMINED FLUID WAS RISING IN RESERVOIR AND VENTING OUT OF VENT CAPFeb 23, 2007 · Robsin R44RAVENII · Hydraulic Reservoir, MainSDR CA070213008Servo · leaking(CAN) RT LATERAL SERVO FOUND LEAKING BY ENGINEER DURING DI. SERVO REMOVED FOR REPAIR AND SERVICABLE UNIT INSTALLED. (TC NR 20070213008)Feb 4, 2007 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA070207008Bungee · disconnected(CAN) UPON INSPECTION, BUNGEE FOUND HANGING DOWN AND DISCONNECTED FROM THE FLIGHT CONTROL. THERE WERE NO FLIGHT PERFORMANCE ISSUES REPORTED. MINOR SCRAPES FOUND IN CONTROL TUBE PAINT. CORDS WERE CHECKED FOR DAMAGE AND RECONNECTED. (TC NR 20070207008)Feb 2, 2007 · Robsin R44RAVENII · Main Rotor ControlSDR 20070125Gear · wornDURING INSPECTION OF THE ENGINE WHILE REPLACING THE CRANKSHAFT IAW SB 569A, IT WAS OBSERVED THAT (PN 13519647) CRANKSHAFT GEAR WAS EXCESSIVELY WORN. THE GEAR WAS REPLACED WITH A NEW PART.Jan 24, 2007 · N622 · Robsin R44RAVENII · Reciprocating Engine Power SectionSDR CA070122002Heat Shield · cracked(CAN) DURING A ROUTINE 100 HR ENGINE/AIRFRAME INSPECTION, IT WAS NOTED THAT THE SUBJECT HEAT SHIELD, THAT IS INSTALLED ON THE ENGINE EXHAUST TAILPIPE, WAS FOUND CRACKED. THE CRACK ORIGINATED IN THE DOUBLER AREA WHERE THE FORWARD CLAMP IS ATTACHED. THE CRACK LOJan 22, 2007 · Robsin R44RAVENII · Engine Exhaust SystemSDR CA070122003Shroud · cracked(CAN) DURING A ROUTINE 100 HR ENGINE/AIRFRAME INSP, IT WAS NOTED THAT THE SUBJECT SHROUD WAS CRACKED JUST AFT OF THE UPPER/AFT MOUNTING SCREW LOCATION. THE SHROUD IS PART OF A SERIES OF SHROUD COVERS THAT SURROUND THE ENGINE FOR COOLING PURPOSES. THE SHROUD HAJan 22, 2007 · Robsin R44RAVENII · Fuselage Main, StructureSDR CA070122004Rib · cracked(CAN) DURING A ROUTINE 100 HOUR ENGINE/AIRFRAME INSPECTION, IT WAS NOTED THAT THE SUBJECT PARTS WHERE CRACKED. THE CRACKS WHERE FOUND AT THE FORWARD ANCHOR NUT LOCTIONS. THE RIBS ARE PART OF THE STRUCTURE THAT ENCLOSES THAT MAST AREA. THE RIBS WHERE REPLACED WJan 22, 2007 · Robsin R44RAVENII · Fuselage Main, FrameSDR CA070117006Sprag Clutch · cracked(CAN) DURING AN AES 1000HR INSPECTION, A CRACK WAS FOUND ON THE CAGE IN THE MIDDLE OF (1) CROSSBAR. (TC NR 20070117006)Jan 17, 2007 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA061216001Ignition Switch · obstructed(CAN) REPLACED IGNITION SWITCH DURING 2200 HR O/H AND REINSTALLED IN INSTRUMENT PANEL. THE SEATING OF THE SWITCH STOPPED THE CONSOLE FROM OPENING AGAIN. THE SWITCH WAS REMOVED AND RESEATED TO ALLOW TRAVEL PAST THE INSTRUMENT CONSOLE. WE COULD NOT ALIGN THE Dec 14, 2006 · Robsin R44RAVENII · Indicating/Recording SystemSDR CA061110006Frame · broken(CAN) DURING INSPECTION FOR SB NR 59, C046-23 FOUND BROKEN AT THE EAR AS DESCRIBED IN THE SB PART, ON ORDER FOR REPLACEMENT AND A KIT KI-185 TO PREVENT VIBRATION OF THE TUBE WILL BE INSTALLED. FRAME WILL BE SENT TO MFG FOR EVALUATION IAW THEIR REQUEST. (TC NRNov 9, 2006 · Robsin R44RAVENII · Nacelle/Pylon, Main FrameSDR CA061002009Wire · chafed(CAN) GRIP ASSEMBLY OPENED TO INSTALL CARGO HOOK SWITCH AND FOUND STARTER BUTTON WIRE CHAFED UP AGAINST A GRIP MOUNTING SCREW. THE INSULATION WAS SPLIT OPEN 0.25 INCH AND 2 WIRE STRANDS REMAINED UNBROKEN. (TC NR 20061002009)Sep 26, 2006 · Robsin R44RAVENII · Rotors Flight Control System WiringSDR CA060905001Shaft · worn(CAN) DURING A 500 HOUR INSPECTION, THE LOWER BEARING INNER RACE WAS FOUND LOOSE ON THE SHAFT. THE BEARING INNER RACE HAD BEEN SPINNING ON THE SHAFT CAUSING SHAFT JOURNAL TO WEAR. (TC NR 20060905001)Sep 5, 2006 · Robsin R44RAVENII · Magneto/DistributorSDR CA060828004Bearing · worn(CAN) PITCH LINKS WERE FOUND TO BE CONTACTING THEIR SPACERS, CAUSING THEM TO WEAR INTO THE STAKING AROUND THE BEARING ON THE PITCH LINKS. TAFT 53.1 HOURS. ALL HARDWARE WAS PROPERLY INSTALLED. (TC NR 20060828004)Aug 27, 2006 · Robsin R44RAVENII · Tail Rotor HeadSDR CA060828005Bearing · worn(CAN) PITCH LINKS WERE FOUND TO BE CONTACTING THEIR SPACERS, CAUSING THEM TO WEAR INTO THE STAKING AROUND THE BEARING ON THE PITCH LINKS. TAFT 161.6 HOURS. ALL HARDWARE WAS PROPERLY INSTALLED. THIS WAS THE SECOND OCCURENCE OF THIS ON OUR FLEET IN 2 DAYS. TAug 26, 2006 · Robsin R44RAVENII · Tail Rotor HeadSDR CA060815004Starter · broken(CAN) PILOT WENT TO START THE AIRCRAFT. HE COULD HEAR THE MOTOR TURNING, HOWEVER THE ENGINE WAS NOT TURNING OVER. THE AME FOUND THE DRIVE TO BE ENGAGED TO THE RING GEAR. WHEN THE STARTER WAS REMOVED, THE DRIVE COULD BE TURNED FREELY BY HAND. THE DRIVE FAILAug 15, 2006 · Robsin R44RAVENII · Engine StarterSDR CA061002004Frame · cracked(CAN) AFT TAB WAS FOUND TO BE CRACKED UPON ROUTINE SCHEDULED INSPECTION. NEW FRAME ORDERED AND HELICOPTER WAS NOTIFIED OF THE PROBLEM. THEY HAVE SINCE RELEASED A NEW BULLETIN ADDING A CLAMP TO THE FRAME. THIS AIRCRAFT IS REGISTERED WITH MFG FOR WHEN THE CORRAug 5, 2006 · Robsin R44RAVENII · Nacelle/Pylon, Frame/Spar/RibSDR CA080915001Fitting · undertorqued(CAN) FOUND NUMEROUS FUEL FITTINGS WHICH CONNECT THE FUEL LINES TO THE HEADER TANKS TO BE SEEPING FUEL. APPROXIMATE TIME OF SERVICE 532 HRS. PIPE THREAD FITTINGS HAD NO THREAD LUBE/SEALANT. THE VENDOR NOTED THAT THE FUEL FITTINGS WERE NOT PROPERLY TORQUED. THIAug 2, 2006 · Found FBA2C1 · Aircraft Fuel Distribution SystemSDR 2006FA0000834Link · separatedON 7/26/06 PILOT REPORTED THAT WHILE FLYING THROTTLE CONTROL BECOME INEFFECTIVE. AIRCRAFT LANDED SAFELY AT AIRFIELD AND PUSHED TO HANGAR. INSPECTED THROTTLE CONTROL ATTACHMENT AT ENGINE THROTTLE BODY AND FOUND UPPER ROD END OF LINK, PN D8531 SEPARATED. PHOTJul 28, 2006 · N494SH · Robsin R44RAVENII · Fuel Control/Reciprocating EnginesSDR CA060802008Wire · chafed(CAN) WHEN THE COLLECTIVE LEVER WAS LOWERED DURING DESCENT FOR A LANDING AT THE HELICOPTER BASE THE ENGINE TACHOMETER BECAME ERRATIC, THE ENGINE OVERSPED ABOVE 116 PERCENT AND THE THROTTLE GOVERNOR WAS NOT WORKING. THE ROTOR TACH ALSO INDICATED AN OVERSPEED ABJul 26, 2006 · Robsin R44RAVENII · Ignition System WiringSDR CA060725007Muffler · cracked(CAN) DURING A ROUTINE 100 HR INSPECTION, IT WAS NOTED THAT THE MUFFLER/TAILPIPE ASSY WAS DISTORTED AND CRACKED AT THE OUTLET PIPE. THE CRACK WAS NOTICED AFTER THE CABIN HEATER JACKET WAS REMOVED. THE CRACK WOULD NOT BE NOTICEABLE WITH THE CABIN HEATER JACKET Jul 25, 2006 · Robsin R44RAVENII · Engine Noise SuppressorSDR CA060725009Air Box · cracked(CAN) DURING A ROUTINE 100 HR INSPECTION, A CRACK WAS NOTICED IN THE ABOVE PART. THERE IS A CHANCE THAT THE CRACK COULD BE THE RESULT OF CLEARANCE ISSUES WHEN REMOVING AND INSTALLING THE AIRBOX FROM THE AIRFRAME. THE PART WAS REPLACED WITH A NEW PART, AND IT WJul 20, 2006 · Robsin R44RAVENII · Air Distribution SystemSDR CA060718003Bearing Race · rough(CAN) IT WAS NOTICED THAT THE DAMPER BEARING HAD TURNED ON THE TAIL ROTOR DRIVE SHAFT. SLIPPAGE MARKS WERE ABOUT .5 INCH APART. THE BEARING WAS REMOVED SO IT COULD BE INSPECTED, AND POSSIBLY REINSTALLED. THE BEARING WAS FOUND TO BE ROUGH. IT WAS ALSO NOTEJul 17, 2006 · Robsin R44RAVENII · Tail Rotor Drive ShaftSDR CA060712009Bolt · bent(CAN) A/C TAFT 36.5 HOURS. MAIN BELT TENSION WAS TO BE ADJUSTED, WHEN IT WAS FOUND THAT THE ADJUSTMENT BOLT, ON THE CLUTCH ACTUATOR, COULD NOT BE MOVED. THE BOLT IS USUALLY HELD IN PLACE WITH A BACK UP NUT. THE BACK UP NUT WAS IN PLACE, AND MOVED AS NORMALJul 11, 2006 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA060707002Motor · failed(CAN) PILOT WAS UNABLE TO USE THE ELECTRIC PUMP TO PRIME THE ENGINE. TROUBLESHOOTING REVEALED THE PUMP WAS GETTING POWER. FUEL PUMP ASSEMBLY WAS REPLACED, AND NO FURTHER DEFECTS FOUND. (TC NR 20060707002)Jun 26, 2006 · Robsin R44RAVENII · Engine Fuel PumpSDR CA060622004Switch · stuck(CAN) MAIN ROTOR TRANSMISSION OVER TEMP LIGHT CAME ON. PILOT LANDED AND LET THE AIRCRAFT COOL DOWN. LIGHT STAYED ON. TRANSMISSION WAS INSPECTED FOR SIGNS OF OVER TEMP, AND NO DEFECTS WERE FOUND. OVERTEMP SWITCH WAS FOUND TO BE STUCK IN THE CLOSED POSTION. Jun 22, 2006 · Robsin R44RAVENII · Engine Temperature Indicating SystemSDR CA060628002Heat Shield · cracked(CAN) DURING A ROUTINE 50 HR ENGINE INSPECTION, IT WAS NOTED THAT THE SUBJECT HEAT SHIELD, THAT IS INSTALLED ON THE EXHAUST TAILPIPE, WAS FOUND CRACKED. THE CRACK ORIGINATED IN A DOUBLER AREA WHERE THE FORWARD CLAMP IS ATTACHED. THE CRACK LOOKS AS THOUGH IT STJun 21, 2006 · Robsin R44RAVENII · Engine Collector/Tailpipe/NozzleSDR CA060628003Collector Ring · bent(CAN) DURING A ROUTINE 50 HOUR ENGINE INSPECTION, IT WAS NOTED THAT THE L/H EXHAUST COLLECTOR WAS BENT AT THE AFT DOWNPIPE CREASE AREA. DURING FURTHER INVESTIGATION, IT WAS NOTED THAT A CRACK HAD FORMED IN THE SUBJECT AREA. DURING REMOVAL OF THE SUBJECT PART, Jun 21, 2006 · Robsin R44RAVENII · Engine Collector/Tailpipe/NozzleSDR CA060623003Servo · leaking(CAN) UPON INSPECTION THE AFT SERVO WAS FOUND TO BE LEAKING FROM THE PILOT VALVE. SERVO REPLACED WITH A SERVICEABLE UNIT. (TC# 20060623003)May 28, 2006 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA060606002Warning Horn · failed(CAN) LOW ROTOR RPM WARNING HORN NOT SOUNDING. REPLACED WITH A SERVICEABLE UNIT, NO FURTHER FAULTS FOUND. (TC NR 20060606002)May 12, 2006 · Robsin R44RAVENII · Main Rotor Indicating SystemSDR CA060606005Gauge · sticking(CAN) CHT WAS REPORTED TO BE STICKING. THE GAUGE WAS FOUND TO BE NOT INSTALLED PROPERLY, CAUSING THE NEEDLE TO RUB ON THE FACE. THE GAUGE WAS REINSTALLED, AND NO FURTHER FAULTS WERE FOUND. (TC NR 20060606005)May 12, 2006 · Robsin R44RAVENII · Engine Temperature Indicating SystemSDR CA060510001Pump · loose(CAN) PUMP WAS FOUND TO BE NOISY DURING ENGINE PRIMING. WHEN THE PUMP WAS REMOVED THE HOUSING AROUND THE ELECTRIC MOTOR WAS ALSO FOUND TO BE LOOSE. (TC NR 20060510001)May 8, 2006 · Robsin R44RAVENII · Engine Fuel PumpSDR CA060508013Seal · leaking(CAN) SERVO FOUND TO HAVE AN EXCESSIVE OIL LEAK FROM THE UPPER SEAL. THE SERVO WAS REPLACED WITH A SERVICEABLE UNIT. THIS SERVO HAD BEEN REMOVED 109.4 HOURS BEFORE FOR A SEAL LEAK. THE SERVO WAS RETURNED AT THAT TIME TO MFG FOR REPAIR. (TC NR 20060508013)May 6, 2006 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA060510014Relay · stuckTHE GOVERNOR (OFF) WARNING LIGHT WAS STAYING ON, REGARDLESS OF THE STATUS OF THE GOVERNOR. BY ALL CHECKS THE GOVERNOR WAS WORKING WHEN TURNED ON, AND TURNING OFF WHEN THE SWITCH WAS TURNED OFF, HOWEVER THE (GOVERNOR OFF) LIGHT STAYED ON AT ALL TIMES. THE CONMay 3, 2006 · Robsin R44RAVENII · Electrical Power SystemSDR CA060518002Gear · damagedPILOT REPORTED DIFFICULTY STARTING THE AIRCRAFT. TEETH WERE FOUND TO BE MISSING FROM THE STATER RING GEAR. THE STARTER RING GEAR ASSEMBLY WAS REPLACED. AIRCRAFT TAFT 1187.3.May 2, 2006 · Robsin R44RAVENII · Engine StarterSDR CA060425001Relay · stuckAFTER PRIMING THE ENGINE, IT WAS NOTED THAT THE AUX FUEL PUMP WOULD NOT SHUT OFF. THE TROUBLE WAS TRACED TO THE CONTROL RELAY. THE INTERNAL POINTS IN THE RELAY HAD STUCK TOGETHER AND WERE KEEPING THE CIRCUIT CLOSED. THE RELAY WAS REPLACED, AND NO FURTHER DEApr 23, 2006 · Robsin R44RAVENII · Engine Control System WiringSDR CA060403026B-Nut · leakingHYDRAULIC FLUID LEAKING FROM FITTING. BACKUP NUT ON FITTING FOUND UNDER TORQUED. FACTORY TORQUE SEAL AND PAL NUT WERE FOUND UNDISTURBED. BACKUP NUT RETORQUED AND NO FURTHER DEFECTS FOUND.Apr 3, 2006 · Robsin R44RAVENII · Hydraulic System, MainSDR CA060424004Clamp · failedDURING PREFLIGHT INSPECTION, TAIL PIPE EXHAUST HEAT SHIELD P/N D317-1 WAS FOUND BENT AFT. FURTHER INVESTIGATION DETERMINED THAT THE FWD CLAMP FOR THE SHIELD HAD FAILED AND CAME OFF IN FLIGHT ALLOWING THE AIRFLOW TO CATCH THE SHIELD AND BENT IT AFT. ROBINSON Mar 31, 2006 · Robsin R44RAVENII · Engine Collector/Tailpipe/NozzleSDR CA060331003G Switch · weakELT WAS BEING RECERTIFIED AND TESTED IN-HOUSE. THE G SWITCH WAS FOUND WEAK. ELT WAS RETURNED TO POINTER FOR FURTHER REPAIR.Mar 31, 2006 · Robsin R44RAVENII · Emergency Locator BeaconSDR CA060331001Bearing · spunDURING INSPECTION IT WAS NOTED THAT THE T/R D/S ASSY BEARING HAD SPUN. THE INNER RACE ROTATED ON SHAFT ROTATED 1/4 TURN AND WITNESSED BY TORQUE SEAL. DRIVESHAFT REPLACED.Mar 30, 2006 · Robsin R44RAVENII · Tail Rotor Drive ShaftSDR CA060328008Pump · failedAS PILOT WAS READY FOR TAKEOFF, THE AUX PUMP LIGHT ILLUMINATED AND THE BREAKER POPPED. PILOT LANDED AND NOTIFIED MAINTENANCE. REPLACED THE PUMP ASSY. THE PUMP ASSY ALSO HAS A WELDON PUMP P/N B8187-B S/N 105188.Mar 27, 2006 · Robsin R44RAVENII · Engine Fuel PumpSDR CA060313006Servo · leakingSERVO FOUND LEAKING FROM TOP AND BOTTOM OF CYLINDER BARREL. SERVO REMOVED AND REPLACED WITH A SERVICEABLE UNIT. THE ATTACHED PHOTOS SHOW THE SERVO AREAS THAT HAVE BEEN LEAKING. THE BULK OF THE OIL HAS BEEN CLEANED OFF THE SERVO, BUT IT CAN STILL BE SEEN WHEMar 10, 2006 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA060313007Servo · leakingSERVO WAS FOUND LEAKING FROM TOP AND BOTTOM OF CYLINDER BARREL. SERVO WAS REMOVED AND REPLACED WITH A SERVICEABLE UNIT.Mar 10, 2006 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA060307011Distributor Gear · stripped(CAN) REMOVED DUE TO ROUGH RUNNING ENGINE. ONCE THE MAGNETO WAS INSPECTED FOUND DISTRIBUTOR GEAR TEETH WERE STIPPED. DUE TO POSSIBLE BACKFIRE ON ENGINE. (TC NR 20060307011)Mar 6, 2006 · Robsin R44RAVENII · Magneto/DistributorSDR CA060303001Pump · failedDURING START UP THE AUX FUEL PUMP C/B POPPED. FUEL PUMP WAS REPLACED AND NO FURTHER DEFECTS WERE NOTED. HAVE AUDITED THE FUEL PUMP ISSUE. HAVE HAD SEVERAL PUMPS IN THE LAST YEAR FAIL.Mar 1, 2006 · Robsin R44RAVENII · Fuel Boost Pump
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