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 YV3R2019012200086Tachometer · intermittentCUSTOMER REPORTED DUAL TACHOMETER P/N: C792-4 FAILS INTERMITTENTLY.May 15, 2019 · N832AK · Robsin R44 · Main Rotor Indicating SystemSDR YV3R2019012200085Tachometer · intermittentCUSTOMER REPORTED DUAL TACHOMETER P/N: C792-4 WAS INTERMITTENT.May 15, 2019 · N832AK · Robsin R44 · Main Rotor Indicating SystemSDR YV3R2019012200083Gyro · spinningCUSTOMER REPORTED DIRECTIONAL GYRO P/N: B823-2 SPINS IN FLIGHT.May 14, 2019 · Robsin R44 · Directional Gyro and Indicating SystemSDR YV3R2019012200079Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO ASSEMBLY P/N: D212-1 IS LEAKING.May 6, 2019 · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019052300089Motor · seizedCUSTOMER REPORTED ACTUATOR ASSEMBLY GEARMOTOR P/N: D276-3 SEIZED.May 1, 2019 · Robsin R44 · Main Rotor Drive SystemSDR YV3R2019012200071Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO P/N: D212-1 WAS LEAKING.Apr 18, 2019 · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019012200069Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO P/N: D212-1 HAD AN OIL LEAK.Apr 17, 2019 · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019032700059Pressure Gauge · defectiveCUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE UNDERESTIMATES AT 1.5" (INCH).Mar 25, 2019 · Robsin R44 · Manifold Pressure (MP) IndicatingSDR YV3R2019031600044Gauge · faultyCUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE, P/N: A600-4, WAS FAULTY.Mar 8, 2019 · Robsin R44 · Manifold Pressure (MP) IndicatingSDR YV3R201903160045Actuator · faultyCUSTOMER REPORTED CLUTCH ACTUATOR ASSEMBLY P/N: C051-1 SPRING SET IS FAULTY.Mar 4, 2019 · Robsin R44 · Main Rotor Drive SystemSDR YV3R2019030600043Tachometer · inoperativeCUSTOMER REPORTED DUAL TACHOMETER ROTOR NEEDLE IS STICKING.Feb 28, 2019 · Robsin R44 · Main Rotor Indicating SystemSDR YV3R2019030500039Inertia Reel · jammedCUSTOMER REPORTED, CONNECTOR ASSEMBLY (INERTIA REEL), WAS JAMMING.Feb 28, 2019 · Robsin R44 · Emergency EquipmentSDR YV3R2019012200026Tachometer · defectiveCUSTOMER REPORTED ENGINE NEEDLE PEGS FULL SCALE WHEN POWER IS APPLIED.Feb 15, 2019 · N79RH · Robsin R44 · Main Rotor Indicating SystemSDR YV3R2019012200024Servo · leakingCUSTOMER REPORTED SERVO P/N: D212-1 LEAKING.Feb 15, 2019 · Robsin R44 · Main Rotor ControlSDR YV3R2019021200021Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 7, 2019 · N217DK · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019021200020Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 7, 2019 · N217DK · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019012200017Controller · inoperativeCUSTOMER REPORTED CONTROLLER ASSEMBLY INOPERABLE.Feb 7, 2019 · N217DK · Robsin R44 · Engine RPM Indicating SystemSDR YV3R2019021200019Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 5, 2019 · N217DK · Robsin R44 · Rotorcraft Servo SystemSDR YV3R2019121020220Spring · malfunctionedCUSTOMER REPORTED ACTUATOR ASSEMBLY P/N: C051-2 COLUMN SPRINGS MALFUNCTIONED.Jan 27, 2019 · N168SU · Robsin R44 · Main Rotor Drive SystemSDR YV3R2019012200009Tachometer · intermittentCUSTOMER REPORTED ROTOR NEEDLE STICKS AT ZERO INTERMITTENTLY, ENGINE NEEDLE READS 3% HIGH.Jan 18, 2019 · Robsin R44 · Main Rotor Indicating SystemSDR YV3R2019021100015Gauge · inoperativeCUSTOMER REPORTED MANIFOLD PRESSURE GAGE IS INOPERATIVE, NEEDLE GETTING STUCK.Jan 1, 2019 · Robsin R44 · Manifold Pressure (MP) IndicatingSDR 2018F00153Intake Valve · burnedDURING FLIGHT, PILOT EXPERIENCED "TORQUE KICK". PILOT MADE PRECAUTIONARY LANDING. INSPECTION REVEALED A BURNED INTAKE VALVE. ABOUT 3/8" OF THE MATING FACE WAS BURNED. AIRCRAFT IS NEW, ENGINE ONLY HAD ABOUT 200 HOURS ON IT.Nov 22, 2018 · N805NV · Robsin R44 · Reciprocating Engine Cylinder SectionSDR 20181023Rocker Shaft · looseSUPPLEMENTAL INFORMATION (PLEASE REPLACE THE TEXT WITH THE FOLLOWING CORRECTED TEXT IN THIS FIELD): SERVICE BULLETIN 388C WAS PERFORMED IN CONJUNCTION WITH THE ANNUAL INSPECTION AND SERVICING OF THE AIRCRAFT. POST INSPECTION RUN-UP AND RETURN TO SERVICE FLIGOct 18, 2018 · N544JH · Robsin R44 · Engine (Reciprocating)SDR 2022FA0000441Intake Valve · burnedPARTIAL POWER LOSS IN CRUISE RESULTING IN STRONG YAW TO THE LEFT. PRECAUTIONARY LANDING. ON RETURN FLIGHT 2 MORE STRONG YAWS TO THE LEFT OCCURRED IN THE HOVER. INSPECTION REVEALED BURNED INTAKE VALVES. HELICOPTER WAS PARKED.Oct 10, 2018 · N41LY · Robsin R44 · Reciprocating Engine Cylinder SectionSDR EVGR201810232Intake Valve · burnedSUPPLEMENTAL INFORMATION (PLEASE REPLACE THE TEXT FROM THE PREVIOUSLY SUBMITTED REPORT WITH THE FOLLOWING CORRECTED TEXT): THE AIRCRAFT OPERATOR COMPLAINED OF AN INTERMITTENT POWER LOSS. TROUBLESHOOTING LED TO THE POSSIBILITY OF A STUCK INTAKE OR EXHAUST VALVEOct 8, 2018 · N41LY · Robsin R44 · Reciprocating Engine Cylinder SectionSDR 2020FA0000084Filter Adapter · not seatedAFTER ACFT EXPERIENCED A RAPID LOSS OF OIL QTY, SEVEN QUARTS IN 45 MINUTES. THE OIL FILTER WAS FOUND UN-SEATED FROM THE MATING SURFACE OF THE OIL FILTER ADAPTER PN D723-1, SAFETY WIRE STILL INTACT. UPON REMOVAL OF THE ENGINE OIL FILTER IT WAS DISCOVERED THE Sep 24, 2018 · N632NV · Robsin R44 · Reciprocating Engine Oil SystemSDR 2018FA0000342Elt · inoperativeEMERGENCY LOCATOR TRANSMITTER FAILED TO TRIGGER WHEN PERFORMING THE ANNUAL INSPECTION.Aug 23, 2018 · N7183P · Robsin R44 · Emergency Locator BeaconSDR 5LHA201808170963Actuator · out of toleranceFLICKERING CLUTCH LIGHT NOTED. ON INSPECTION OF CLUTCH ACTUATOR FOUND ONE OF TWO TENSION SPRING SWITCHES TO NOT CLOSE ON ENGAGEMENT. FOUND SWITCH TO BE GOOD, ACTUATOR SPRING TENSION DID NOT MATCH OPPOSITE SIDE AND WAS NOT ENGAGING SWITCH WHEN ACTUATOR EXTENDEDJul 19, 2018 · N963LW · Robsin R44 · Main Rotor Drive SystemSDR EVGR2019030600001Contact Breaker · openTHE OVERHAULED MAGNETO WAS PURCHASED. UPON INSTALLATION OF THE MAGNETO, THE TACHOMETER DID NOT WORK. FURTHER TROUBLESHOOTING REVEALED THAT THE TACHOMETER CONTACT ASSEMBLY HAD NO CONTINUITY ACROSS THE POINTS. THE CONTACT ASSEMBLY WAS REPLACED WITH A NEW CONTJun 29, 2018 · N69KA · Robsin R44 · Magneto/DistributorSDR 2017FA0000600Boot · tornDURING A PREFLIGHT INSPECTION, FOUND THE MAIN ROTOR BLADE BOOT TORN THROUGH AT INNER BOOT CLAMP. FLUID LEAKAGE NOTED ON BLADE BOOT AND MAST FAIRING. REMOVED THE BOOT, AND IT SHOWED A TEAR PROPAGATING FROM ENTIRE CIRCUMFERENCE OF CLAMP. OPPOSITE BLADE NOTED Nov 16, 2017 · N4911X · Robsin R44 · Main Rotor HeadSDR 2016FA0000092Case Half · out of roundPILOT ATTEMPTED TO START ENGINE FOR THE FIRST FLIGHT OF THE DAY. ENGINE WOULD TURNED OVER BUT WOULD NOT START. ACFT WAS REMOVED FROM SERVICE FOR EVALUATION. ENGINE WAS REMOVED AND TORN DOWN. UPON REMOVAL OF THE ACCESSORY CASE, COVERED IT WAS NOTED THAT THEREFeb 19, 2016 · N529DL · Robsin R44 · Engine (Reciprocating)SDR CA151021003Sprag Clutch · cracked(CAN) FOUND CRACKED SPRAG CLUTCH DURING DISASSEMBLY.Oct 21, 2015 · Robsin R44 · Engine/Transmission CouplingSDR S4HR2015FA0000276Bladder · contaminatedMFG HAS COME OUT WITH A SB 78B, TO REPLACE THE MAIN AND AUX FUEL TANKS WITH BLADDER TYPE TANKS FOR THIS SERIES ROTORCRAFT. HAVE NOTICED THAT AT THE FIRST INSPECTION FOLLOWING THE FUEL TANK MODIFICATION THA THE GASCOLATOR/AIR FRAME FUEL FILTER IS HALF COVERED May 27, 2015 · N4154C · Robsin R44 · Fuel StorageSDR CA150519029Exhaust Valve · seized(CAN) THE PILOT NOTICED A HIGHER THAN NORMAL MANIFOLD PRESSURE AND DECIDED TO RETURN TO BASE TO INVESTIGATE. FURTHER EXAMINATION REVEALED A LARGE AMOUNT OF ENGINE OIL HAD LEAKED FROM A BENT PUSH ROD TUBE, DUE TO A SEIZED EXHAUST VALVE FOUND IN THE CYLINDER. May 11, 2015 · Robsin R44 · Reciprocating Engine Cylinder SectionSDR 2015FA0000072Magneto · wornFOUND WORN MAGNETO ASSY. REPLACED AFTER ROUGH OPERATION. ENGINE OPS CHECK FOUND NORMAL AFTER REPLACEMENT.Jan 6, 2015 · N7030J · Robsin R44 · Magneto/DistributorSDR 2014FA0000599Air Filter · defectiveDURING A VFR STAGE CHECKOUT. AFTER A NORMAL START UP, PILOT EXECUTED A MAX PERFORMANCE TAKEOFF FROM THE DEPARTURE. NO ISSUES, AND ACFT BEHAVED NORMALLY. PILOT EXECUTED A NORMAL APPROACH. INSTRUCTOR TOOK CONTROLS. GAUGES WERE NORMAL AFTER PEDAL TURN. A NOct 10, 2014 · N7188D · Robsin R44 · Engine Air Intake SystemSDR 2014FA0000488Guide · carbonedWHILE PERFORMING 100/300 HOUR INSPECTION, FOUND LOW COMPRESSION CYLINDER NR 5. EXHAUST VALVE FOUND TO BE VERY TIGHT IN VALVE GUIDE AND PERFORMED SB388C AND VALVE GUIDE REAMING PROCEDURE, INSPECTED VALVE AND STEM, NO DEFECTS FOUND EXCEPT VALVE GUIDE HAD CARBOAug 6, 2014 · N479AT · Robsin R44 · Reciprocating Engine Cylinder SectionSDR 2014FA0000389Nut · failedNUT, PN MS21042L6 IS A .3750 LOW-PROFILE, ALL METAL LOCKING NUT. THIS SPECIFIC NUT WAS USED TO SECURE THE AFT ENGINE MOUNT TO THE HELICOPTER AIRFRAME. THIS NUT WAS INSTALLED 50 HRS PRIOR TO DISCOVERING THE PROBLEM. ALTHOUGH THIS NUT WAS CAREFULLY TORQUED IAJun 12, 2014 · N69KA · Robsin R44 · Engine Mount SectionSDR CA130910004Bearing · worn(CAN) PILOT REPORTED HEARING A WHISTLE/WHINE COMING FROM THE TAIL ROTOR ON SHUTDOWN. UPON INSPECTION IT WAS FOUND THAT THE C031-1 T/R PITCH CHANGE BEARING HAD BLACK SMOKE COMING FROM AROUND THE BEARING CLOSEST TO THE T/R GEARBOX. WHEN REMOVED BEARINGS WERE RSep 10, 2013 · Robsin R44 · Tail Rotor Control SystemSDR CA130822013Filter · deteriorated(CAN) AIR FILTER FOUND DETERIORATED AT 50 HRS INSPECTION WITH DIFFERENT DATE CODE LISTED. HELICOPTER MFG SB-85. PN C177-1 WITH DATE CODE OL1912AY2 FOUND DETERIORATED.Aug 21, 2013 · Robsin R44 · Engine Air Intake SystemSDR CA130820003Valve · sticking(CAN) HYDRAULICS FOUND UNSERVICEABLE ON START UP. HYDRAULIC RESERVOIR REPLACED DUE TO SHUTTLE VALVE STICKING.Aug 15, 2013 · Robsin R44 · Hydraulic Reservoir, MainSDR CA130702007Carburetor · failed(CAN) DURING TAKEOFF AND REDUCING POWER TO CRUISE, APPROXIMATELY 25" TO 22", THE ACFT SUDDENLY YAWED LT AND THEN STRAIGHTENED OUT. THIS WAS REPEATABLE. THE CARB WAS CHANGED AND THE ACFT RETURNED TO SERVICE.Jun 2, 2013 · Robsin R44 · Fuel Control/Reciprocating EnginesSDR L9QR20130410002Yoke · failedONE OF THE MAGNETS CAME LOOSE FROM THE MAIN GEAR BOX YOKE, THERE ARE 2 MAGNETS IN THIS HALL EFFECT MAIN ROTOR RPM SENCING SYS WHEN ONE OF THE MAGNETS CAME SEPARATED FROM THE YOKE YOU LOOSE RPM INDICATION AND THE LOW ROTOR RPM WARNING HORN AND LIGHT THEN ACTIVMar 11, 2013 · N392GP · Robsin R44 · Main Rotor GearboxSDR CA121205009Switch · malfunctioned(CAN) ELT ACTIVATED UNCOMMANDED IN FLIGHT. REMOTE SWITCH IN CABIN WOULD NOT RESET OR TURN OFF THE ELT. ACFT WAS RETURNING TO BASE AND DIVERTED TO THE CONTRACT MAINTENANCE FACILITY 1 MILE FROM BASE. ELT WAS DEACTIVATED AND SEARCH AND RESCUE NOTIFIED. PROBLENov 20, 2012 · Robsin R44 · Emergency Locator BeaconSDR CA121019009Battery · malfunctioned(CAN) DURING ACFT SERVICING, INTERMITTENT BEEPING NOISE HEARD FROM ELT. ELT REMOVED, FOUND INTERMITTENT ELT BATTERY, REPLACED BATTERY NEW. ELT RETESTED BY AMO AND FOUND AIRWORTHY.Oct 17, 2012 · Robsin R44 · Emergency Locator BeaconSDR FINL2012101700001Valve · contaminatedDURING TROUBLESHOOTING FOR A ROUGH RUNNING ENGINE, A SMALL PIECE OF METAL WAS DISCOVERED ON THE VALVE OF THE FUEL DIVIDER.Oct 15, 2012 · Robsin R44 · Fuel DividerSDR CA121010006Swashplate · worn(CAN) TTAF 3623.5 ROD END PAL NUT WEARING INTO THE SWASH-PLATES EAR. AN ENGINEER HAD INDICATED THAT HE FOUND 2 SEPARATE HELICOPTERS WITH THE PAL NUT ON 1 OF THE 2 FORWARD VERTICAL PUSH-PULL TUBES WEARING INTO THE LOWER SIDE OF THE SWASH-PLATE EAR. WE DID A FOct 5, 2012 · Robsin R44 · Main Rotor Mast/SwashplateSDR CA121010004Bearing · separated(CAN) THE PILOT NOTICED BINDING AND HEARD/FELT A CLUNK SOUND WHEN THE CYCLIC TRIM WAS MOVED OFF CENTER TO THE RT LATERAL DIRECTION. THIS APPARENTLY CONTINUED THROUGH THE SUMMER MONTHS, APPROXIMATELY 2 TO 250 HOURS. WHEN THE ACFT WAS BROUGHT TO OUR FACILITY FOOct 5, 2012 · Robsin R44 · Rotorcraft Flight ControlSDR CA120928004Actuator · failed(CAN) ON SHUTDOWN ELECTRIC CLUTCH ACTUATOR SWITCHED TO THE DISENGAGED POSITION BUT DID NOT RESPOND. DOWN LIMIT SWITCH TERMINAL WIRE FOUND BROKEN, BUT STILL COVERED WITH HEAT SHRINK. CLUTCH ACTUATOR REMOVED AND ALL 4 SWITCHES REPLACED NEW.Sep 27, 2012 · Robsin R44 · Engine/Transmission CouplingSDR CA120725003Air Filter · deteriorated(CAN) UPON INSPECTION PULLED THE AIR FILTER OUT TO REPLACE IT AND IT WAS FOUND TO BE DETERIORATED AROUND THE RIM OF THE FILTER AND PARTS OF THE RUBBER MOLDING , WHICH HOLDS THE WIRE MESH IN PLACE, WERE FOUND INSIDE THE AIRBOX. FOUND 3 OTHER DETERIORATING FILTJul 24, 2012 · Robsin R44 · Engine Air Intake System
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