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 CA090717008Actuator · intermittent(CAN) CLUTCH LIGHT FLICKERING, REPLACED ACTUATOR.Jul 10, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090715006Lead · chafed(CAN) OIL SOAKED POINTS CAUSING THE ENG NOT INCREASING RPM MORE THAN 2 PERCENT WHILE THE ENGINE TACH NEEDLE WOULD BOUNCE FROM 100 PERCENT TO 110 PERCENT. UPON FURTHER REVIEW, DURING THE TEARDOWN, IT REVEALED ONE OF THE TACH LEAD WIRES HAD CHAFED THROUGH ON THJul 8, 2009 · Robsin R44RAVENII · Ignition System WiringSDR CA090705002Alternator · inoperativeALTERNATOR WOULD NOT PRODUCE CHARGE. ALTERNATOR REPLACED AND TESTED. NO DEFECTS FOUND.Jul 4, 2009 · Robsin R44RAVENII · AC Generator-AlternatorSDR CA090709001Magneto · malfunctioned(CAN) THE GOVERNOR WAS HUNTING DURING FLIGHT. TROUBLESHOOTING REVEALED A FAULTY GOVERNOR SIGNAL FROM THE MAGNETO (TC# 20090709001)Jul 4, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090705001Points · burnedMAGNETO COULD NOT TIME TO ENG. MAGNETO REPLACED AND AND TESTED. NO DEFECT FOUND. UPON FURTHER INVESTIGATION DURING TEARDOWN, FOUND THE MAIN AND RETARD POINTS BURNED AND WORN DOWN THROWING THE TIMING OUT. THAT SORT OF POINT DAMAGE IS TYPICAL OF A CAPACITOR FJul 3, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090702015Magneto · failedDURING FIRST ENGINE START OF THE DAY, THE ENGINE TACH WAS PEGGED AT 100 PERCENT. MAGNETO WAS REMOVED AND NO FURTHER ISSUES WERE NOTED.Jun 23, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090630006Yoke · loose(CAN) THE NUT THAT HOLDS THE C908-1 YOKE ON TO THE INPUT DRIVE FOR THE MAIN GEARBOX WAS FOUND TO LOSE TORQUE IN TWO INCIDENTS CAUSING THE YOKE TO VIBRATE AND MAKE CONTACT WITH THE MAIN ROTOR TACH PICK UPS, AND CAUSE WEAR ON THE NUT AND SHAFT THREADS. THE COTTEJun 22, 2009 · Robsin R44RAVENII · Main Rotor Transmission MountSDR EVGR20090623Cam · wornCUSTOMER REPORTED AN EXCESSIVE MAG DROP (UPWARDS OF 10 PERCENT) AND HARD STARTING. BROUGHT IN LT MAG, IT WAS HARD TO TIME. COULDN'T MAKE THE POINTS TIME, AND THEY WERE SOMEWHAT PITTED, CHANGED THEM. STILL COULDN'T TIME THEM, AS THEY WENT FROM -10 TO +22 FOR PJun 19, 2009 · N149P · Robsin R44RAVENII · Magneto/DistributorSDR CA090617005Gear · brokenSTARTER FOUND WITH A BROKEN TOOTH.Jun 12, 2009 · Robsin R44RAVENII · Engine StarterSDR CA090617006Starter · stuckSTARTER STUCK IN THE ENGAGE POSITION DURING FLIGHT, CAUSING ENG TO DRIVE THE STARTER AND DAMAGING THE INTERNAL GEARS.Jun 11, 2009 · Robsin R44RAVENII · Engine StarterSDR CA090610005Bearing · worn(CAN) MAG WAS RECEIVED FOR A 500 HR INSP. BEFORE DISASSEMBLY, ROTOR WAS SPUN AND END PLAY WAS FOUND (0.0035 INCHES, MAX ALLOWABLE IS 0.0015"). THE MAG WAS DISASSEMBLED AND SMALL BRG (PN 2-202) WAS FOUND TO HAVE WEAR MARKS ON THE INNER RACE AND BRG CAGE WAS ALJun 10, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090605008Bearing · lack of lube(CAN) PILOT REPORTED TO THE ENGINEER, HIGH FREQUENCY VIBRATION IN FLIGHT. A GRINDING NOISE WAS HEARD DURING SHUTDOWN WHILE THE BLADES WERE SLOWING. TAIL ROTOR DRIVE SHAFT WAS REMOVED FOR INSP AND FOUND THE C172-1 HANGER BRG HAD NO LUBRICATION. THERE WAS NO EJun 4, 2009 · Robsin R44RAVENII · Tail Rotor Drive ShaftSDR CA090605005Motor · intermittentIN FLIGHT, ENGINE WAS PRONE TO OVERSPEED AND UNDERSPEED. GOVERNOR MOTOR WAS FOUND TO BE INTERMITTENT.Jun 3, 2009 · Robsin R44RAVENII · Turbine GovernorSDR CA090605003Actuator · failed(CAN) CLUTCH ACUTATOR FAILED. TROUBLESHOOTING FOUND FAULTY SWITCH IN ACTUATOR ASSY. SERVICABLE ACTUATOR INSTALLED.Jun 2, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090605007Switch · unserviceableTHE CLUTCH WOULD NOT ENGAGE, DISASSEMBLED THE CLUTCH AND FOUND THE SWITCH UNSERVICEABLE WITH A FAULTY WIRE.Jun 2, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090602007Relief Valve · stuck(CAN) CONTAMINANTS ARE MIGRATING INTO THE RELIEF VALVE SEAT AND WALLS CAUSING GALLING WITHIN THE RELIEF VALVE. THIS CAUSES THE VALVE TO STICK CAUSING PRESSURE IMPULSES FROM THE ENGINE DRIVEN PUMP NOT TO BE ABSORBED BY THE RELIEF VALVE. THE IMPULSE CAUSE THE VAJun 1, 2009 · Robsin R44RAVENII · Fuel StorageSDR CA090602004Pump · leaking(CAN) FUEL PUMP LEAKING.May 30, 2009 · Robsin R44RAVENII · Engine Fuel PumpSDR CA090602003Points · faulty(CAN) ENGINE TACH WAS NOT READING AND THE GOVERNOR WAS NOT WORKING. TACH POINTS ON THE MAGNETO FOUND FAULTY UPON REMOVAL AND INSPECTION.May 27, 2009 · Robsin R44RAVENII · Engine RPM Indicating SystemSDR CA090602006Bearing · worn(CAN) BEARING FOUND WORN BEYOND LIMITS.May 24, 2009 · Robsin R44RAVENII · Reciprocating Engine Liquid CoolingSDR CA090602005Controller · inoperative(CAN) ENGINE RPM HUNTING, GOVERNOR CONTROL UNIT REPLACED.May 23, 2009 · Robsin R44RAVENII · Engine RPM Indicating SystemSDR CA090525004Starter · malfunctioned(CAN) THE BENDIX IS NOT MOVING OUT TO ENGAGE THE RING GEAR.May 21, 2009 · Robsin R44RAVENII · Engine StarterSDR CA090525002Switch · intermittent(CAN) FUEL FILTER WARNING LIGHT FLICKERS WHEN THE ENGINE IS AT IDLE. THE LIGHT FLICKERING INCREASES IN BRIGHTNESS WHEN THE CLUTCH IS DISENGAGED OR AUX FUEL PUMP IS TURNED OFF. THE SWITCH ASSY WAS REPLACED WITH REVISION D FOR TROUBLESHOOTING AND THE PROBLEM WASMay 20, 2009 · Robsin R44RAVENII · Engine Fuel and ControlSDR CA090515003Relief Valve · failed(CAN) FOLLOWING SHUTDOWN, PILOT NOTICED A SEVERE HYD LEAK IN TRANSMISSION AREA. BECAUSE OF COOLING AIR HOSE THAT IS DIRECTED RIGHT AT HYD RESERVOIR, FLUID SPRAYED ALL AROUND TRANSMISSION. PILOT REFILLED RESERVOIR TO APPROPRIATE LEVEL IAW SERVICING TRAINING, BMay 13, 2009 · Robsin R44RAVENII · Hydraulic Pressure Relief Valve, MainSDR CA090511012Bearing · damaged(CAN) INNER BEARING ON TAIL ROTOR PITCH CHANGE MECHANISM, INNER RACE IS SPINNING ON THE SHAFT CAUSING BEARING ASSY TO WEAR INTO THE SHOULDER ON THE PITCH CHANGE ASSY. THE RESULT WAS THE BEARING ASSY WAS MIGRATING INBD ON THE PITCH CHANGE ASSY.May 8, 2009 · Robsin R44RAVENII · Tail Rotor Control SystemSDR CA090508006Starter Gen · malfunctioned(CAN) STARTER MADE GRINDING NOISES DURING START UP. STARTER WAS REPLACED AND THE PROBLEM WAS RECTIFIED.May 6, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090511006Pump · intermittent(CAN) INTERMITTENT PRIME ON FIRST START, PUMP REPLACED.May 6, 2009 · Robsin R44RAVENII · Engine Fuel PumpSDR CA090511004Starter Gen · worn(CAN) DURING INSP, STARTER FOUND WORN. STARTER REPLACED WITH SERVICABLE STARTER.May 5, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090506003Actuator · failed(CAN) CLUTCH ACTUATOR FAILED. TROUBLESHOOTING REVEALED A FAULTY MICROSWITCH. SERVICABLE ACTUATOR INSTALLED.May 2, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR UPX2009F00000Pump · leakingENGINE MECHANICAL FUEL PUMP DIAPHRAGM LEAKING WITH ONLY 1063.7 HOURS IN SERVICE. POSSIBLE FIRE DANGER. REPLACED PUMP. (K)May 1, 2009 · N74435 · Robsin R44RAVENII · Engine Fuel PumpSDR CA090511005Starter Gen · inoperative(CAN) STARTER WAS NOT ENGAGING ON START, REPLACED STARTER WITH SERVICABLE STARTER.May 1, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090506002Pump · defective(CAN) WELDON AUX FUEL PUMP LIGHT CAME ON IN FLIGHT, TROUBLESHOOTING REVEALED A DEFECTIVE PUMP. PUMP REPLACED WITH A SERVICABLE ONE.Apr 27, 2009 · Robsin R44RAVENII · Fuel Boost PumpSDR CA090506004Starter Gen · broken(CAN) STARTER WOULD NOT ENGAGE, FOUND BROKEN.Apr 23, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090506005Magneto · defective(CAN) MAGNETO FAILED AND FOUND DEFECTIVE, SERVICABLE MAGNETO INSTALLED.Apr 23, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090422008Pilot Valve · leaking(CAN) LEAKING PILOT VALVE.Apr 18, 2009 · Robsin R44RAVENII · Rotorcraft Servo SystemSDR CA090421013Magneto · failed(CAN) MAGNETO DROP FAILURE.Apr 14, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090421012Pump · unserviceable(CAN) FUEL PUMP ELECTRICALLY UNSERVICEABLE, C/B POPPING.Apr 8, 2009 · Robsin R44RAVENII · Engine Fuel PumpSDR CA090317006Starter Gen · damagedDURING STARTER UP THE STARTER MADE A GRINDING NOISE. STARTER WAS REPLACED AND DAMAGE WAS FOUND ON THE TEETH OF STARTER. STARTER WAS REPLACED AND NO FURTHER ISSUES WERE NOTED.Feb 25, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090326008Housing · cracked(CAN) DURING INSPECTION IS WAS NOTED THAT THE HOUSING WAS FOUND CRACKED. STARTER WAS REPLACED AND NO FURTHER ISSUES WERE NOTED.Feb 22, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090310006Mount · cracked(CAN) GRINDING NOISE WAS HEARD DURING START. ONE CORNER OF THE MOUNT FLANGE WAS FOUND BROKEN OFF DURING REMOVAL. STARTER WAS REPLACED AND NO FURTHER ISSUES WERE NOTED.Feb 19, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090219004Starter Gen · cracked(CAN) CRACK FOUND ON STARTER BENDIX HSG.Feb 18, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090310007Starter Gen · failed(CAN) DURING START UP, THE ACFT FAILED TO START. ENGINEER WAS SENT OUT TO INVESTIGATE AND IT WAS FOUND TO BE STARTER ISSUES. STARTER HOUSING WAS FOUND CRACKED. STARTER WAS REPLACED AND NO FURTHER ISSUES WERE NOTED.Feb 18, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090223003Sprag Assy · broken(CAN) SPRAG HAS 3 INNER EARS BROKEN OFF SPRAG HAS EXCESSIVE WINDOW WEAR 70.020 SHAFT PN 166-4, S/N 4170 REV N WORN UNDERSIZE HUB P/N 167-3 WORN OVERSIZE.Feb 12, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090223004Shaft · worn(CAN) SHAFT AND HUB WORN UNDERSIZE/OVERSIZE ON SPRAG JOURNAL.Feb 12, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090223005Sprag Assy · worn(CAN) CLUTCH REMOVED FROM SERVICE DUE TO INFLIGHT SLIPPAGE. SHAFT P/N C166-3 WORN OVERSIZE. HUB P/N C167-3 WORN OVERSIZE. SPRAG P/N C188-3 S/N 3961 REV G CAGE BROKEN AT CROSSBAR.Feb 12, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090223006Sprag Assy · worn(CAN) SPRAG CAGE CRACKED AT 4 CROSSBARS, SPRAG INNER EAR BROKEN, WINDOW WEAR 0.050 SHAFT PN C166-4 REV N WORN UNDERSIZE HUB PN C167-3 WORN OVERSIZE.Feb 12, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090210006Clutch · slippedDURING FLIGHT A LOUD BANG WAS HEARD BY THE CREW. THEY RETURNED TO BASE AND MAINTENANCE NOTIFIED. CLUTCH WAS INSPECTED AND REPLACED DUE TO SLIPPAGE.Jan 30, 2009 · Robsin R44RAVENII · Engine/Transmission CouplingSDR CA090128005Bearing · wornMAG WAS RECEIVED FOR AN OVERSPEED INSPECTION (500 HOUR INSPECTION PROCEDURE). BEFORE DISASSEMBLY THE BEARINGS WERE INSPECTED BY TURNING THE ROTATING MAGNET ASSEMBLY. SIDE PLAY WAS NOTED AND THE END PLAY WAS MEASURED AT 0.004 INCH. TCM DOES NOT ALLOW SIDE PLJan 28, 2009 · Robsin R44RAVENII · Magneto/DistributorSDR CA090307002Starter Gen · cracked(CAN) DURING A DI CONDUCTED BY MX IT WAS NOTED THAT THE HOUSING WAS FOUND CRACKED. STARTER RING GEAR WAS ALSO REPLACED DUE TO DAMAGED TEETH. STARTER WAS REPLACED AND NO ISSUES ISSUES WERE NOTED.Jan 26, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090307001Housing · cracked(CAN) DURING A PREFLIGHT INSP, THE HSG WAS NOTED TO BE CRACKED. STARTER WAS REPLACED AND NO FUTHER ISSUES WERE NOTED.Jan 25, 2009 · Robsin R44RAVENII · Starter-GeneratorSDR CA090303004Sprag Clutch · cracked(CAN) UPON DISASSEMBLY FOUND SPRAG CRACKED.Jan 22, 2009 · Robsin R44RAVENII · Engine/Transmission Coupling
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