Lycoming IO-520 series

Service difficulty reports · 446

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 = 'IO520'
  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 XGNA202404080001Engine · power lossDURING CLIMB A PARTIAL LOSS OF ENGINE POWER OCCURRED WITH FLUCTUATING MANIFOLD PRESSURE. ALL OTHER ENGINE PARAMETERS WERE NORMAL. MAGNETO DROPS WERE NORMAL. PILOT RETURNED TO AIRPORT.Apr 6, 2024 · N236CH · Beech A36 · Engine (Reciprocating)SDR XGNA202404080002Engine · power lossDURING CLIMB A PARTIAL LOSS OF ENGINE POWER OCCURRED WITH FLUCTUATING MANIFOLD PRESSURE. ALL OTHER ENGINE PARAMETERS WERE NORMAL. PILOT RETURNED TO THE AIRPORT. MAGNETO DROPS WERE NORMAL.Apr 6, 2024 · N236CH · Beech A36 · Engine (Reciprocating)SDR 2022FA0000041None · noneOPERATOR REPORTED "ALTERNATOR OUT" LIGHT ILLUMINATES INTERMITTENTLY. VISUAL INSPECTION OF WIRING AT ALTERNATOR REVEALED THE ALTERNATOR CASE HALVES WERE NOT SECURED TO EACH OTHER. FURTHER INSPECTION DETERMINED THE 4 PHILISTER HEAD SCREWS THAT HOLD THE CASE HAJan 21, 2022 · N488HP · Beech 100BEECH · DC Generator-AlternatorSDR 2020FA0000331Rod · brokenDECLARED AN EMERGENCY DURING CRUISE FLIGHT AT 5500 FT. THE PILOT REPORTED ENGINE FAILURE TO ATC AND MADE A FORCED LANDING ON A HIGHWAY, APPROXIMATELY 12 MILES NORTHEAST OF THE DEPARTURE AIRFIELD. .AIRCRAFT LANDED SAFELY, WITH NO DAMAGE. VISUAL INSPECTION DURJul 10, 2020 · N512BD · Beech V35B · Reciprocating Engine Power SectionSDR 2020FA0000046Turnbuckle · corrodedTHE AIRCRAFT WAS IN OUR REPAIR SHOP FOR CYLINDER WORK. THE OWNER ASKED WHILE IT HERE, TO LOOK AT THE RIGHT AILERON TURNBUCKLE. THIS REQUEST WAS BASED ON INFORMATION FROM THE PUBLICATION DATED MARCH 2019. SUBSEQUENTLY, WE REMOVED THE SEATS AND FLOORBOARDS TO Jan 15, 2020 · N5618K · Beech S35 · Aileron Control SystemSDR 4S42020F00002Doubler · crackedTHE FOLLOWING IS THE INFORMATION FOR THE FAA FORM 8010-4 MALFUNCTION OR DEFECT REPORT REFERENCE CRACKS IN THE MLG ACTUATOR BULKHEAD DOUBLERS ON CESSNA 210E SN 21058705 N404BN TOTAL TIME AIRFRAME IS 5455.8 HOURS. AFTER RESEARCH OF THE ACFT LOG BOOKS IT WAS DETJun 18, 2019 · N404BN · Cessna 210E · Fuselage Main, StructureSDR 2020FA0000087Fork · crackedCRACK FOUND ON PITCH CHANGE FORK DURING MAGNETO PARTICLE INSPECTION. THE CRACK IS APPROXIMATELY 0.125 INCHES LONG AND IS LOCATED ON THE BOTTOM CORNER OF THE BLOCK SLOT. CRACK MAY HAVE FORMED DUE TO SERVICE FATIGUE. THERE IS NO EVIDENCE OF ABNORMAL LOAD OR OFeb 18, 2019 · N638LD · Beech 58 · Propeller Controlling SystemSDR 2018FA0000518Pump · brokenHYDRAULIC PUMP LEAKS 5606 FROM HOUSING PARTING SURFACES DURING OPERATION. TWO HOUSING BOLTS APPEAR TO BE STRIPPED, BROKEN AND HOUSING SEAL IS EXTRUDING PAST PARTING SURFACES AROUND LEAKAGE AREA.Jul 23, 2018 · N9410M · Cessna 210K · Hydraulic Pump (Electric/Engine), MainSDR 2017FA0000376Engine · malfunctionedAFTER 12 - 15 MINUTES ON THE GROUND AND ENGINE RUN UP WITH NO INDICATIONS OF ANY PROBLEMS WITH ANY SYSTEMS, LEFT ENGINE HAD POWER LOSS WITHIN 1 - 2 SECONDS AFTER ROTATION WITH GEAR DOWN. RPM DOWN TO 1600 RPM, LEFT FUEL FLOW NEEDLE BOUNCING BACK AND FORTH FROAug 8, 2017 · N88EB · Beech D55 · Engine (Turbine/Turboprop)SDR 2017FA0000547Nut · backed outDURING FLIGHT, NOTICED THE THROTTLE WAS NOT RESPONDING CORRECTLY. IT HAD ADVANCED TO FULL POWER. TRIED TO TROUBLESHOOT AND EVENTUALLY FOUND THE THROTTLE STUCK AT FULL POWER. DIVERTED AND WAS ABLE TO LAND WITHOUT ANY PROBLEMS. THE ENGINE HAD BEEN REPLACED AApr 11, 2017 · N27HB · Beech A36 · Power LeverSDR 2017F00014Line · failedDURING LANDING, NOTED THAT RIGHT HAND BRAKES WERE UNRESPONSIVE. SLOWED AIRCRAFT AS BEST AS POSSIBLE AND ROLLED OFF END OF RUNWAY INTO A GRASS FIELD. AIRCRAFT SUSTAINED DAMAGE TO FUSELAGE AND LANDING GEAR.Dec 27, 2016 · N402R · Cessna 402C · Landing Gear Brake SystemSDR 2016FA0000646Lifter · damagedTHE SURFACE OF THE LIFTER THAT CONTACT THE CAMSHAFT ARE SPALLED AND CORRODED. REPLACED THE LIFTERS.Dec 8, 2016 · N185PR · Cessna A185F · Reciprocating Engine Power SectionSDR 2017FA0000583Spring · wornSPRING TENSION WEAKENED OVER TIME AND DEFORMED CAUSING BLOCKAGE AND INABILITY TO PROPERLY BLEED AND SERVICE SYSTEM CAUSING BRAKE FAILURE ON LANDING AND SUBSEQUENT GROUND LOOP WITH DAMAGE TO RT WING AND RT HORIZONTAL.Nov 11, 2016 · N4918Q · Cessna A185F · Landing Gear Brake SystemSDR 2016FA0000326Clamp · failedHOSE CLAMP ASSEMBLY FAILED ON THE FUEL INDUCTION SYSTEM CAUSING ENGINE TO FAIL.Jul 13, 2016 · N5245C · Cessna 310C · Aircraft Fuel Distribution SystemSDR 2015FA0000519Bolt · corrodedAFTER LANDING, DURING THE LANDING ROLL THE LT MAIN GEAR WHEEL COLLAPSED. RESULTING IN DAMAGE TO THE LT WING AND LT SIDE OF FUSELAGE. DURING THE INSPECTION OF THE WHEEL ASSEMBLY, IT WAS OBSERVED THAT 2 OF THE LT GEAR WHEEL ATTACH BOLTS WHICH HAD SHEARED OFF, Aug 31, 2015 · N186AZ · Cessna 185F · Main Landing Gear Strut/Axle/TruckSDR 2015FA0000278Warning Light · illuminatedAIRCRAFT OVERVOLTAGE LIGHT ILLUMINATED.Jun 19, 2015 · N7984M · Beech 35C33A · Electrical Power SystemSDR CA150330004Attach Fitting · cracked(CAN) DURING REMOVAL OF ACFT SEAPLANE FLOATS FOR ACFT CORROSION INSPECTIONS, IT WAS FOUND THAT BOTH RT AND LT FORWARD FUSELAGE ATTACH FITTINGS WERE CRACKED. BOTH FITTINGS WILL REQUIRE REPLACEMENT AT THE REINSTALLAION OF THE FLOAT ASSEMBLIES.Mar 30, 2015 · Cessna A185F · Fuselage, Landing Gear Attach FittingsSDR KC2R2015020549760Impulse Coupling · crackedIMPULSE COUPLING FOUND TO BE CRACKED AT ADVANCE STOP NOTCHES OF BASE PLATE. DEFECT WAS DISCOVERED USING MAGNETIC PARTICLE INSPECTION OF PART DURING PERFORMANCE OF MFG RECOMMENDED-500 HOUR INSPECTION. BOTH MAGS ON THIS ENGINE SHOW SAME DEFECT.Feb 4, 2015 · N380PC · Beech A36 · Magneto/DistributorSDR EPUA20150204001Magneto · malfunctionedDURING CRUISE PILOT NOTICED RPM LOSS & VIBRATION FROM THE ENG. ACFT RETURNED & LANDED SAFELY WITHOUT INCIDENCE. INSPECTED ENG & REPLACED BOTH MAGNETOS & ALL SPARK PLUGS.Feb 4, 2015 · N7389U · Cessna 207A · Magneto/DistributorSDR CTUR2015FA0000020Retaining Ring · dislodgedTHE RETAINING RING DISLODGED FROM THE RETAINING RING GROVE, WHICH ALLOWED THE PISTON AND ROD AND MAIN GEAR ACTUATOR GLAND TO SEPARATE FROM THE MAIN GEAR ACTUATOR CYLINDER PREVENT HYDRAULIC PRESSURE FROM BUILDING WHICH IS NECESSARY TO OPEN THE MAIN.Dec 31, 2014 · N8229M · Cessna 210K · Landing Gear ActuatorSDR KC2R1218201449621Impulse Coupling · crackedDURING A ROUTINE 500 HR INSPECTION OF THE MAGNETOS, FOUND BOTH IMPULSE COUPLINGS CRACKED AT HUB PLATE, NEAR FULL ADVANCE STOP NOTCH.Dec 18, 2014 · N434G · Beech A45 · Magneto/DistributorSDR KC2R2014111749540Impulse Coupling · crackedDURING A 500 HR INSPECTION ON THE MAGNETOS, IT WAS DISCOVERED THAT IMPULSE COUPLING HAD CRACKS IN FLYWEIGHT BASE PLATE. CRACKS DETECTED USING MAGNETIC PARTICLE INSPECTION. CRACKS ORIGINATED FROM SHARP CORNERED FEATURE OF BASE PLATE THAT FORMS THE FULL ADVANCENov 17, 2014 · N9070S · Beech F33A · Magneto/DistributorSDR 2014FA0000541Cylinder · burstPROPELLER CYLINDER C3550 BURST FROM OIL PRESSURE, PROBABLE FROM GOVERNOR. GOVERNOR MUST BE TESTED BEFORE PROPELLER REINSTALLED. PROPELLER HUB SERIAL 700239. REJECTED DUE TO FORCE PUT ON SCREW HOLES.Aug 10, 2014 · N698D · Cessna 414 · Propeller AssemblySDR BSYA20140715001Battery · failedPILOT HAD A COMPLETE ELEC FAILURE AFTER TAKEOFF & RETURNED SAFELY.Jul 15, 2014 · N732CQ · Cessna 210L · Battery/Charger SystemSDR EPUA20140515001Adapter · failedPILOT REPORTS THAT THE STARTER WAS SLIPPING. THE STARTER DRIVE ADAPTER SPRING WAS BROKEN & HAD DAMAGED THE CRANKSHAFT GEAR RETAINING BOLTS & SAFETY WIRE. THE SAFETY WIRE WAS BROKEN & OIL SYS CONTAMINATION WAS POSSIBLE DUE TO THIS. THE ENG WILL NEED TO BE REMay 14, 2014 · N91002 · Cessna 207 · Engine StarterSDR AU3R20140515001Heater · dislodgedDURING REMOVAL OF THE LT LOWER SIDE ENGINE COMPARTMENT INSPECTION PANEL, THE LT SUMP HEATER WAS FOUND DISLOGGED AND WRAPPED AROUND THE THROTTLE ARM AND CABLE.May 14, 2014 · N2882W · Beech A36 · Heating SystemSDR 2014FA0000305Drag Link · failedNOSE GEAR COLLAPSE, ON LANDING. STRUCTURAL, PROPELLER, AND SUSPECTED ENGINE DAMAGE OCCURRED. INVESTIGATION REVEALED THAT THE NOSE GEAR DRAG LINK ASSEMBLY BROKEN AT THE WELD AT THE UPPER ATTACH POINT. IN CONTACT WITH MFG CONCERNING DISPOSITION.Apr 25, 2014 · N9957R · Cessna U206C · Nose/Tail Landing GearSDR EPUA20140414001Adapter · failedENGINE WOULD NOT START. THE STARTER DRIVE ADAPTER FAILED. IT WAS FOUND THAT THE STARTER DRIVE ADAPTER SPRING CONTACTED THE CRANKSHAFT FLYWHEEL RETAINING BOLTS & DAMAGED THE SAFETY WIRE FOR THE RETAINING BOLTS. VERIFIED TORQUE OF BOLTS & SAFETIED.Apr 11, 2014 · N23CF · Cessna 207A · Engine StarterSDR EPUA20140131001Lifter · dirtyENGINE ROUGH, BACKFIRES AT LOW POWER SETTINGS. CLEANED NR 1 INTAKE LIFTER & REINSTALLED. OPERATIONS CHECKED GOOD.Jan 29, 2014 · N73067 · Cessna 207A · Reciprocating Engine Power SectionSDR EPUA20131010001Distributor Gear · brokenDURING FLIGHT THE LT MAGNETO WAS NOT OPERATING CORRECTLY. IN THE COURSE OF NON ROUTINE MAINTENANCE THE LT MAGNETO WAS FOUND TO HAVE A BROKEN DISTRIBUTOR GEAR. FURTHER MAINT REVEALED THAT THE RT MAG HAD A 200 RPM DROP WHICH IS OUT OF OPS LIMITS. ALTHOROUGH INOct 8, 2013 · N7340U · Cessna 207A · Magneto/DistributorSDR BSYR201309252062Engine · surgesAFTER TAKEOFF, LT ENGINE STARTED TO SURGE. PILOT NOTICED FUEL PRESSURE WAS FOLLOWING THE SURGE. SHUTDOWN LT ENGINE AND RETURNED AND LANDED SAFELY WITHOUT INCIDENT. OPENSep 25, 2013 · N95BB · Beech 58 · Engine (Reciprocating)SDR BSYR20130723054Landing Gear · malfunctionedAFTER TAKEOFF, LANDING GEAR WOULD NOT RETRACT. PILOT RETURNED AND LANDED SAFELY WITHOUT INCIDENT. OPENJul 22, 2013 · N274CS · Cessna 210L · Landing Gear Retraction/Extension SystemSDR 2013FA0000286Circuit Breaker · failedPILOT REPORTED THE NAV LIGHT AS BEING INOPERATIVE. DURING TROUBLESHOOTING, FOUND THE CIRCUIT BREAKER TO BE AT FAULT. NO PROBABLE CAUSE AT THIS TIME. REPLACED THE CIRCUIT BREAKER.May 17, 2013 · N5609S · Beech F33A · Exterior LightingSDR MKT2013F00000Tube · splitTHIS IS 1 OF ABOUT 10 INNER TUBES WE HAVE HAD SPLIT IN A SEAM AND CAUSED A FLAT TIRE, THERE HAVE BEEN NO SIGN OF A HOLE IN THESE TIRES AND NO HARD LANDING, NOT OVER INFLATED, JUST A SPLIT SEAM IN THE TUBE.Apr 16, 2013 · N8988P · Cessna U206E · TireSDR VJ3R20130406001Relay · intermittentDURING THE SECOND LANDING AT AIRPORT, THE CREW SELECTED GEAR DOWN, THE GEAR SHOWED DOWN AND LOCKED AND CREW SAW AND SMELLED SMOKE. THE LANDING GEAR CIRCUIT BREAKER TRIPPED AFTER GEAR COMPLETED CYCLE. MX CONFIRMED SOURCE OF SMOKE WAS FROM THE LANDING GEAR ACTApr 6, 2013 · N8251C · Beech F33A · Landing Gear Retraction/Extension SystemSDR 2013FA0000204Circuit Breaker · failedPILOT REPORTED THE LANDING LIGHT AS BEING INOPERATIVE. DURING TROUBLESHOOTING THE TECHNICIAN FOUND THE CIRCUIT BREAKER TO BE AT FAULT. NO PROBABLE CAUSE AT THIS TIME. REPLACED THE CIRCUIT BREAKER.Mar 30, 2013 · N8101C · Beech F33A · Exterior LightingSDR 2013FA0000220Line · leakingPILOT REPORTED FUEL ODOR IN CABIN. AFTER INSPECTION, IT WAS DETERMINED THAT THE RIGID FUEL CROSSFEED LINES THAT RUN THROUGH THE FUSELAGE, INSIDE THE MAIN SPAR BOX, HAD CORRODED INTERNALLY RESULTING IN FUEL POOLING IN THE LOWER SPAR BOX. THIS OCCURRED IN OCT Mar 21, 2013 · N617AX · Cessna 310R · Aircraft Fuel Distribution SystemSDR 2013FA0000132O-Ring · failedINTERNAL O-RING FAILED AND UPLOCK WOULD NOT RELEASE NOSE GEAR, RESULTING IN GEAR NOT EXTENDING, PROP DAMAGE, SUDDEN ENGINE STOPPAGE, AND LOWER SKIN DAMAGE.Feb 20, 2013 · N210Y · Cessna 210K · Nose/Tail Landing Gear Strut/AxleSDR 2012FA0000805Lifter · spalledSMALL METALLIC PARTICLES NOTED IN OIL FILTER. SHARP EDGES, NOTED ON PARTICLES UNDER MAGNIFIED VISUAL INSPECTION, INDICATED POSSIBILITY OF LIFTER FACE SPALLING. REMOVED SAMPLE LIFTER AND NOTED SPALLING ACROSS FACE. R & R ALL LIFTERS IN ENGINE AND INSPECTED CDec 7, 2012 · N933A · Beech F33A · Reciprocating Engine Power SectionSDR CA121126014Pivot · cracked(CAN) CRACK DISCOVERED ON THE TUBE OF THE BOW WHEEL PIVOT ASSY. CRACK FORMED CLOSE TO WHERE THE ARM ASSY MOUNTS TO THE BOW OF THE FLOAT.Nov 12, 2012 · Cessna 182B · Wheel/Ski/FloatSDR 2012FA0000684Bolt · shearedAFT HYDRAULIC ACTUATOR BOLT WAS FOUND TO BE SHEARED IN HALF AND DISPLACED FROM ITS DESIGNED LOCATION. THE FAILURE OCCURRED DURING SKI ACTUATION WHILE AIRBORNE, FOLLOWING USE ON HARD/BREAKABLE CRUST SNOW SURFACES DURING PREVIOUS FLIGHTS. FURTHER INSPECTION OFSep 13, 2012 · N4786Q · Cessna A185F · Main Landing GearSDR 2012FA0000584Circuit Breaker · failedPILOT REPORTED VENT BLOWER NOT WORKING. DURING TROUBLESHOOTING, THE TECH FOUND THE CIRCUIT BREAKER AT FAULT. INSTALLED A NEW CIRCUIT BREAKER. OPS CHECK NORMAL.Aug 20, 2012 · N1569A · Beech F33A · Air Conditioning System WiringSDR 2012FA0000585Circuit Breaker · failedPILOT REPORTED TAXI LIGHT NOT WORKING. DURING TROUBLESHOOTING THE TECHNICIAN FOUND THE CIRCUIT BREAKER AT FAULT. INSTALLED A NEW CIRCUIT BREAKER. OPS CHECK NORMAL. NO PROBABLE CAUSE OR RECOMMENDATIONS AT THIS TIME.Aug 20, 2012 · N1564A · Beech F33A · Exterior LightingSDR 2012FA0000495Retainer · backed outDURING TAXI, LT WHEEL OUTER TIRE RETAINER HARDWARE BACKED OUT AND PULLED THREADS FROM INNER WHEEL HUB, OUTER TIRE RETAINER DEPARTED AND ALLOWED TIRE AND TUBE TO DEPART AS WELL. THE ACFT WAS STOPPED AND NO OTHER DAMAGE NOTED.Jun 18, 2012 · N714KH · Cessna A185F · Wheel/Ski/FloatSDR 2012FA0000363Blade · gougedNOTICED OIL ON NOSE COWL. PROP REMOVED TO REPLACE CRANKSHAFT O-RING. BUT DURING REMOVAL, IT WAS DISCOVERED THAT THE SEEPAGE WAS ACTUALLY COMING FROM A BLADE. SEEPAGE WAS CONSIDERED MINOR AND PROPELLER OPERATION APPEARED NORMAL. REPAIR SHOP DISCOVERED DURINMay 30, 2012 · N201WC · Beech A36 · Propeller Blade SectionSDR CA120618005Cylinder · damaged(CAN) ALL CYLINDERS REPLACED DUE TO VALVE GUIDES BEING TOO TIGHT & BENDING THE PUSH RODS.May 26, 2012 · Cessna A185F · Reciprocating Engine Cylinder SectionSDR 2012FA0000249Circuit Breaker · failedPILOT REPORTED STROBE LIGHTS TO BE INOPERATIVE. DURING TROUBLESHOOTING, FOUND THE STROBE LIGHT CIRCUIT BREAKER TO BE AT FAULT. INSTALLED A NEW STROBE LIGHT CIRCUIT BREAKER . OPS CHECKED GOOD.Apr 28, 2012 · N8240T · Beech F33A · Exterior LightingSDR CA120620008Crankshaft · failed(CAN) ACFT ENG SN 282949-R CRANKCASE FAILURE, 7TH STUD CRANKCASE, CRANKCASE FRETTING ON NR 2 & 3 INTERMEDIATE BEARING SADDLE THRU-BOLT PADS. WHEN THIS OCCURS, THE PINCH FIT IS LOST ON THE MAIN BEARINGS IN THESE POSITIONS & THEY BECOME LOOSE. AS A RESULT, THEMar 26, 2012 · Cessna A185F · Reciprocating Engine Power SectionSDR BSYA20120215009Cylinder Head · crackedON DESCENT INTO LWM, LEFT ENGINE STARTED BACK FIRING WHEN THROTTLE PULLED BACK. MAINTENANCE FOUND NR 1 AND NR 3 CYLINDER HEADS CRACKED. MAINTENANCE REPLACED NR 1 AND NR 3 CYLINDERS, RUN UP AND OPERATIONAL CHECK NORMAL. NO FURTHER DEFECTS NOTED.Feb 15, 2012 · N17708 · Beech 58 · Reciprocating Engine Cylinder SectionSDR 2012FA0000184Hub · crackedPROP ASSY WAS SUBMITTED FOR O/H AND OIL LEAK FROM CRACK. CRACK EXTENDS FROM BLADE NR 1 PORTAL THROUGH THE CYL MOUNTING SURFACE.Feb 10, 2012 · N866PH · Cessna A185F · Propeller Hub Section
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