Robinson Helicopter R44

Service difficulty reports · 447

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 aircraft_model_key = 'R44'
  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 CA040217005Bearing · failed(CAN) NR 5 CONNECTING ROD BEARING FAILED. BEARING FACE MATERIAL WAS BREAKING AWAY FROM BEARING. METAL CONTAMINATION WAS NOTED DURING PREFLIGHT CHECK. CONNECTING ROD BEARING HAD LOST APPROXIMATELY 15 PERCENT OF TOTAL SURFACE AREA. BOTH THE CRANKSHAFT AND IDLFeb 10, 2004 · Robsin R44 · Reciprocating Engine Power SectionSDR CA040120002Hub · galled(CAN) OTHER PART AFFECTED LOWER BEARING C181-3 S/N 1328 UPON REMOVING FAN ASSY FOR ACCESS TO A DEFECTIVE ACTUATOR C051-1, DAMAGE (FRETTING AND GALLING) WAS DISCOVERED ON BOTH MATING FLANGE OF FAN HUB C186-1 (PART OF D174-2 ASSY) AND LOWER BEARING C181-3. NO PRJan 19, 2004 · Robsin R44 · Rotorcraft Cooling Fan SystemSDR CA031205009Mount · cracked(CAN) DURING INSPECTION AFT GPS ANTENNA SEALENT WAS NOTICED TO BE CRACKED AND THE ANTENNA WAS LOOSE. UPON REMOVING THE ANTENNA, 3.5 INCH CRACKED WAS FOUND ON THE TAILCONE SKIN. THE CRACK DID NOT ORIGINATE FROM ANY OF THE MANUFACTURED RIVET OR SCREW HOLES. IDec 5, 2003 · Robsin R44 · Rotorcraft Tail BoomSDR CA040114008Rotor Head · inoperative(CAN) UPON RECEIPT OF AD2003-24-51 HELICOPTER WAS INSPECTED FOR THE SUSPECT NAS6605-31BOLTS. EVEN THOUGH THE R44 S/N WAS NOT LISTED IN THE AD OR ROBINSON HELICOPTER SERVICE BULLETIN 51 THE T/R HUB NAS6605-31BOLTS WERE FOUND TO HAVE THE VENDOR IDENTIFICATION MADec 2, 2003 · Robsin R44 · Tail Rotor HeadSDR AUS20031225Bolt · mismanufactured(AUS) MAIN ROTOR SWASHPLATE LOWER BOLT DAMAGED. INVESTIGATION FOUND A FLAT SPOT ON THE BLADE SHANK. SUSPECT MANUFACTURING ERROR AS FLAT SPOT HAD BEEN CADMIUM PLATED. FOUND DURING INSPECTION IAW AD/R44/20.Dec 2, 2003 · Robsin R44 · FastenersSDR AUS20031206Blade · delaminated(AUS) MAIN ROTOR BLADE UPPER SKIN SUSPECT DELAMINATED. DELAMINATED AREA STARTS APPROXIMATELY 381MM (15IN) IN FROM BLADE TIP TO 1295.4MM (51IN) FROM THE BLADE TIP AND 63.5MM (2.5IN) IN FROM THE LEADINGEDGE. FOUND DURING INSPECTION IAW AD/R44/18.Nov 24, 2003 · Robsin R44 · Main Rotor BladesSDR CA040217006Heat Shield · departed(CAN) PART DEPARTED HELICOPTER WHILE IN FLIGHT. DUE TO LOCATION OF DESCRIBED PART, IF (WHEN) PART LEAVES AIRCRAFT IN FLIGHT IT IS QUITE PROBABLE PART WILL COME INTO CONTACT WITH TAIL ROTOR. PART HAS NOT BEEN LOCATED SINCE DEPARTURE. PART HAS NOT BEEN REPLACEDNov 6, 2003 · Robsin R44 · Engine Collector/Tailpipe/NozzleSDR CA031029005Frame · worn(CAN) CLAMP FROM MR GEARBOX COOLING HOSE FOUND WEARING INTO FRAME. WORN ALMOST COMPLETELY THROUGH FRAME.Oct 29, 2003 · Robsin R44 · Fuselage Main, FrameSDR AUS20031129Gear · damaged(AUS) ENGINE FAILED. INITIAL INVESTIGATION REVEALED A FAILURE OF THE MAGNETO DRIVE SYSTEM. DURING AUTO ROTATION AND LANDING, ONE MAIN ROTOR BLADE CONTACTED THE TAILBOOM. FURTHER EXAMINATION FOUND THE CRANKSHAFT IDLER GEAR DAMAGED. SUSPECT CAUSED BY LOSS OF TOOct 21, 2003 · Robsin R44 · Magneto/DistributorSDR AUS20031215Pitch Control · rough(AUS) TAIL ROTOR PITCH CONTROL SYSTEM ROUGH IN OPERATION. FOUND DURING INSPECTION IAW AD/R44/17.Oct 16, 2003 · Robsin R44 · Tail Rotor Control SystemSDR CA031028010Piston · failed(CAN) PILOT FELT A VIBRATION IN THE A/C. CARRIED OUT A PRECAUTIONARY LANDING, DURING WHICH HE NOTICED A LACK OF POWER. ON INSPECTION IT WAS DISCOVERD THAT NR 5 PISTON HAD FAILED.Oct 15, 2003 · Robsin R44 · Reciprocating Engine Cylinder SectionSDR AUS20031007Magneto · faulty(AUS) MAGNETO FAULTY.Oct 1, 2003 · Robsin R44 · Magneto/DistributorSDR AUS20031003Control Box · failed(AUS) GOVERNOR CONTROL BOX FAILED.Sep 29, 2003 · Robsin R44 · Fuel Control/Reciprocating EnginesSDR 2003FA0000904Buckle · crackedTHE LT REAR PASSENGER SEAT BELT BUCKLE ASSY WAS INSPECTED DURING A 100 HOUR INSPECTION AND WAS FOUND TO BE CRACKED. THE CRACK HAD DEVELOPED IN THE STAINLESS STEEL STRAP AT THE BUCKLE TO STRAP RIVIT ATTACH POINTS. THIS STRAP IS FORMED IN A HORSESHOE SHAPE AROAug 8, 2003 · N7085U · Robsin R44 · Emergency EquipmentSDR 2003FA0000834Valve Guide · damagedCYLINDER ASSY LOCATED AT NR 5 POSITION. EXHAUST VALVE STUCK, UPON REMOVAL OF THE CYLINDER FROM THE ENGINE. THE INTAKE VALVE LIFTER WAS ALSO FOUND TO BE DAMAGED (SHATTERED).Aug 8, 2003 · N442EK · Robsin R44 · Reciprocating Engine Cylinder SectionSDR CA030715001Pump · loose(CAN) DURING 100 HR INSPECTION THE BOLTS (ON THE ENGINE DRIVEN FUEL PUMP) HOLDING THE BOTTOM COVER TO THE PUMP BODY WERE FOUND LOOSE. BOLTS WERE TIGHTENED AND TORQUE SEAL WAS APPLIED TO MAKE VISUAL INDICATION OF MOVEMENT. THIS INSTALLATION WOULD BE BETTER SERJul 14, 2003 · Robsin R44 · Engine Fuel PumpSDR AUS20030620Gasket · damaged(AUS) ENGINE OIL FILTER INTERNAL RUBBER GASKET DAMAGED. A PIECE OF THE RUBBER GASKET WAS FOUND TO BE STUCK UNDER THE OIL PRESSURE RELIEF VALVE CAUSING LOSS OF OIL PRESSURE. NEW FILTER HAD BEEN FITTED APPROXIMATELY ONE HOUR PREVIOUSLY. FURTHER INVESTIGATION FOUJun 16, 2003 · Robsin R44 · Reciprocating Engine Oil SystemSDR CA030527007Bolt · loose(CAN) DURING THE FIRST 100 HR INSPECTION THE BOLTS HOLDING THE BOTTOM COVER TO THE PUMP BODY WERE FOUND LOOSE BY SEVERAL TURNS. BOLTS WERE TIGHTENED AND TORQUE SEAL WAS ADDED TO MAKE VISUAL INDICATION OF MOVEMENT. THIS INSTALLATION WOULD BE BETTER SERVED WITHMay 26, 2003 · Robsin R44 · Engine Fuel PumpSDR AUS20030754Distributor Blk · collapsed(AUS) MAGNETO DISTRIBUTOR BLOCK COLLAPSED.May 21, 2003 · Robsin R44 · Magneto/DistributorSDR 2003FA0000890Engine · making metalDURING SCHEDULED INSPECTION FOR PART 135 OPERATOR, FOUND OIL FILTER CONTAMINATED WITH METAL PARTICLES. METAL WAS IDENTIFIED AS PROBABLE FROM CAMSHAFT. ENGINE REMOVED AND SENT TO MFG FOR REPAIR. MFG FOUND CAMSHAFT AND LIFTERS FAILED. ENGINE REPAIRED BY MFG AND May 21, 2003 · N244HP · Robsin R44 · Engine (Reciprocating)SDR CA030514003Actuator · failed(CAN) MAIN ROTOR ACTUATOR ENGAGEMENT WAS OVER 90 SECONDS. ACTUATOR REMOVED AND SENT FOR OVERHAUL.Apr 27, 2003 · Robsin R44 · Main Rotor Drive SystemSDR CA030407007Engine · vibration(CAN) DURING CRUSE FLIGHT AT 400FT. PILOT HEARD A LOUD 'BANG' A/C BEGAN TO VIBRATE AND THERE WAS A POWER LOSS HOWEVER THE ENGINE WAS STILL RUNNING. A/C WAS LANDED WITH NO SUBSEQUENT DAMAGE AND ENGINE SHUT OFF. ON INSPECTION IT WAS DISCOVERED THAT SOMETHING IN Apr 5, 2003 · Robsin R44 · Reciprocating Engine Cylinder SectionSDR AUS20030393Blade · corroded(AUS) TAIL ROTOR BLADE LEADING EDGE CONTAINED SMALL HOLES.Apr 3, 2003 · Robsin R44 · Tail Rotor BladesSDR CA030320004Bracket · cracked(CAN) IN COMPLIANCE WITH SB 45 HYDRAULIC SERVO BRACKET D202-2 WAS REPLACED WITH D202-2 REV.F. THE BRACKET WAS FOUND TO BE CRACKED IN THE BEND RADIUS WHICH PROMPTED THE SB.Mar 7, 2003 · Robsin R44 · Hydraulic System, MainSDR AUS20021375Contactor · damaged(AUS) LT MAGNETO CONTACTS PITTED AND POINTS CLOSED.Nov 28, 2002 · Robsin R44 · Magneto/DistributorSDR AUS20021327Bracket · cracked(AUS) LOWER ACTUATOR BRACKET CRACKED.Nov 8, 2002 · Robsin R44 · Engine/Transmission CouplingSDR CA021031015O-Ring · leaking(CAN) FUEL DRAIN VALVE LEAKING AT O-RING. REPLACED VALVE.Sep 11, 2002 · Robsin R44 · Engine Fuel DistributionSDR AUS20021209Muffler · cracked(AUS) MUFFLER AND LH COLLECTOR CRACKED AND DISTORTED.Jul 19, 2002 · Robsin R44 · Engine Noise SuppressorSDR AUS20020669Condenser · failed(AUS) MAGNETO CONDENSER INTERNAL FAILURE.Jul 9, 2002 · Robsin R44 · Magneto/DistributorSDR AUS20020756Shaft · broken(AUS) RH MAGNETO ROTATING SHAFT BROKEN.Jun 20, 2002 · Robsin R44 · Magneto/DistributorSDR CA020611008Rotating Magnet · cracked(CAN) DURING A ROUTINE 500 HOUR INSPECTION OF THE MAGNETO, SMALL CRACKS (1/4 INCH OR SHORTER) WERE FOUND IN THE ROTOR HOUSING WHERE THE MAGNET PROTRUDES THROUGH. TECH REP WAS CONTACTED AND WE WERE ADVISED THAT ALTHOUGH NOT COMMON, THIS WAS NOT RARE AND IS COMMay 14, 2002 · Robsin R44 · Magneto/DistributorSDR CA020611007Magneto · cracked(CAN) DURING A ROUTINE 500 HOUR INSPECTION OF THE MAGNETO, SMALL CRACKS (1/4 INCH OR SHORTER) WERE FOUND IN THE ROTOR HOUSING WHERE THE MAGNET PROTRUDES THRU AT THE CORNERS (8 LOCATIONS). WERE ADVISED THIS WAS NOT RARE AND IS COMMON TO THE O-540 ENGINE SERIES May 14, 2002 · Robsin R44 · Magneto/DistributorSDR CA020507014Points · loose(CAN) THE POINTS THAT OPEN & CLOSE FOR THE ENGINE TACH IS NOT STAKED PROPERLY CAUSING THE POINTS TO OPEN INTERMITTENTLY, IN TURN THE ENGINE TACH BOUNCES & THE GOVERNOR TO GET ERRATIC INPUT AND GIVE BAD OUTPUT. I HAVE RECEIVED 1 OF THESE BAD POINTS FROM AN OVERApr 28, 2002 · Robsin R44 · Magneto/DistributorSDR CA020215008Tail Cone · cracked(CAN) 2 INCH CRACK FOUND ON TOP SKIN OF TAIL CONE AT LOCATION OF AFT FACTORY INSTALLED VHF ANTENNA MOUNT 51.5 TO 53.5 INCHES AFT OF FORWARD TAIL CONE SKIN. CRACK APPEARS TO HAVE ORIGINATED FROM TAPERED FACTORY SHIM PN B322-1.Feb 14, 2002 · Robsin R44 · Rotorcraft Tail BoomSDR CA020122006Sprag Clutch · cracked(CAN) CLUTCH WAS REMOVED FROM SERVICE DUE TO AN OIL LEAK. UPON DISSASSEMBLY THE SPRAG WAS INSPECTED AND THE CAGE FOUND CRACKED.THE CRACK WAS BETWEEN TWO WINDOWS RUNNING FROM THE CORNERS. SPRAG WILL BE REPLACED WITH NEW.Jan 21, 2002 · Robsin R44 · Engine/Transmission CouplingSDR CA020122005Retainer · cracked(CAN) CLUTCH WAS REMOVED FROM SERVICE DUE TO OIL LEAK.INVESTIGATION REVEALED THAT SEAL RETAINER PLATE EAR APPEARRED TO BE CRACKED. RETAINER WAS REMOVED AND EAR WAS FOUND TO BE NO LONGER ATTACHED TO RETAINER PLATE.NO OTHER CRACKS COULD BE FOUND IN RETAINER PLJan 21, 2002 · Robsin R44 · Engine/Transmission CouplingSDR 2002FA0000077Pump · leakingHYDRAULIC PUMP LEAKING BETWEEN THE MATING SURFACES OF THE PUMP.Jan 14, 2002 · N144JD · Robsin R44 · Hydraulic Pump (Electric/Engine), MainSDR 2002FA0000084Vernatherm · stuckOPERATOR COMPLAINT, HIGH OIL TEMPERATURES, 245 DEGREES F. VERIFIED BY A DECREASE IN OIL PRESSURE. FOUND VALVE DEFECTIVE. REMOVED AND REPLACED VALVE WITH NEW PART. OPS CHECKED GOOD.Jan 8, 2002 · N49CN · Robsin R44 · Engine Oil Temperature RegulatorSDR CA011220004Bungee Cylinder · failed(CAN) DURING 100 HOUR INSPECTION, BOTH AFT BUNGEES WERE FOUND TO BE DISCONNECTED AT THE AFT PUSH PULL TUBE C121-9 AT THE C317-1 BELLCRANK.SUSPECT DISCONNECTION IS DUE TO COLD OPERATING ENVIRONMENT AT THIS TIME. LOCAL TEMPERATURES REACHED BELOW -25 DEGREES C. Dec 19, 2001 · Robsin R44 · Rotorcraft Flight ControlSDR CA011220003Bungee Cylinder · failed(CAN) PLIOT COMPLAINED OF HEAVY AFT CYCLIC FORCES.INVESTIGATION REVEALED CYCLIC BUNGEE TO BE DISCONNECTED FROM AFT ATTACH POINT ON PUSH ROD P/N C121-9 AT C317-1 BELLCRANK. SUSPECT DISCONNECTION IS DUE TO COLD OPERATING ENVIRONMENT AT THIS TIME. LOCAL TEMERATDec 18, 2001 · Robsin R44 · Rotorcraft Flight ControlSDR IVSA077371Wheel · corrodedPAINT ON FAN WHEEL LOOSE AND FLAKING OFF DUE TO POOR ADHESION, PROBABLY CAUSED BY IMPROPER PREPARATION, ALLOWING PREMATURE CORROSION.Dec 12, 2001 · N7186Z · Robsin R44 · Main Rotor Drive SystemSDR 2002FA0000083Vernatherm · stuckHIGH OIL TEMPERATURES, AT RED LINE 245 DEGREES, VERIFIED BY DECREASE IN OIL PRESSURE. FOUND VALVE STUCK, NOT EXTENDING. REMOVED AND REPLACED WITH NEW PART. OPS CHECKED GOOD.Oct 16, 2001 · N8353K · Robsin R44 · Engine Oil Temperature RegulatorSDR IVSA075920Actuator · failedCLUTCH ACTUATOR MOTOR FAILED FOR THE 2ND TIME. REPLACEMENT MOTOR INSTALLED. FURTHER TOUBLESHOOTING REVEALED SHEAVE ALIGNMENT OUT OF LIMITS CAUSING INFLIGHT ILLUMINATION OF CLUTCH LIGHT. ALIGNMENT CORRECTED AND FLIGHTS CONTINUED NORMALLY. BAD MOTOR RETURNED Sep 24, 2001 · N7189C · Robsin R44 · Main Rotor GearboxSDR IVSA075461Actuator · defectiveMOTOR FAILED TO OPERATE WHEN CALLED ON TO ENGAGE M/R DRIVE BELTS. WOULD NOT OPERATE IN EITHER DIRECTION. MOTOR REPLACED, DEFECTIVE MOTOR RETURNED TOROBINSON FOR WARRANTY CREDIT.Aug 31, 2001 · Robsin R44 · Engine/Transmission CouplingSDR CA011102005Hub · cracked(CAN) PART C186-1 FOUND CRACKED WHILE REPLACING MICROSWITCH V3-1001. THE FAN WAS REMOVED AND THE HUB WAS FOUND CRACKED. THE FAN SHAFT ASSEMBLY C007-5 WAS CORRODED. THE FAN TORQUE WAS FOUND ACCEPTABLE (450-550 FT LBS).\PIECE C186-1 WAS REPLACED AND THE FAN SHAFAug 15, 2001 · Robsin R44 · Engine Oil CoolerSDR CA010810006Crosstube · chafed(CAN) 2 CHAFED MARKS APPROX 1/16" DEEP, 3/8" APART & 1/2" LONG, MADE BY THE WIRES OF THE SEAT HOSE THAT IS ATTACHED TO THE CABIN HEATER SHROUD ON THE OUTLET SIDE. HEATER SHROUD IS NOT A TIGHT FIT TO THE MUFFLER & I HAVE IN THE PAST NOTED WEAR ON THE MUFFLER SUAug 1, 2001 · Robsin R44 · Wheel/Ski/FloatSDR CA010809009Switch · worn(CAN) AT 100 HR INSPECTION, TEST OF ACTUATOR SWITCHES-ONE SWITCH FAILED THE TEST. INSPECTION OF THE SWITCH REVEALED THAT THE ACTUATOR BUTTON ON THE SWITCH WAS WORN TO ABOUT 1/2 OF IT'S ORIGINAL HEIGHT. INSTALLED A NEW SWITCH. SUSPECT FAN IMBALANCE TO BE THE CAJul 24, 2001 · Robsin R44 · Main Rotor SystemSDR CA010809008Bracket · broken(CAN) UPON REMOVING THE SCROLL TO CORRECT A CLUTCH ACTUATOR SWITCH THAT WAS NOT FUNCTIONING, THE BROKEN A185-5 BRACKET WAS DISCOVERED. SUSPECT FAN IMBALANCE TO BE THE CAUSE OF THIS DEFECT.Jul 24, 2001 · Robsin R44 · Engine Oil CoolerSDR CA010504013Distributor Gear · sheared(CAN) AIRCRAFT WAS RUNNING AT 100 PERCENT JUST BEFORE LIFT OFF WHEN THE PILOT AND PASSENGER HEARD 2 SPUTTERS FOLLOWED BY THE ENGINE SHUTTING DOWN. AFTER FURTHER INVESTIGATION, BOTH MAGNETOS WERE FOUND TO HAVE SEVERAL SHEARED PLASTIC TEETH ON THE DISTRIBUTOR GEApr 19, 2001 · Robsin R44 · Magneto/DistributorSDR 20010419CW006Pinion Gear · malfunctionedENGINE QUIT WHEN LEFT MAG WAS SELECTED DURING MAG CHECK AFTER START. RESTART WAS UNEVENTFUL. WITH MAG SWITCH IN BOTH, ENG WOULD NOT DEVELOP POWER, BEGAN BACKFIRING AND AFTERFIRING. ATTEMPT TO CHECK MAG TIMING, FOUND THE ENG LT MAG WOULD ONLY TURN INTERMITMar 19, 2001 · N71330 · Robsin R44 · Magneto/Distributor
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