Lycoming O-320-H2AD

Service difficulty reports · 326

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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 = 'O320H2AD'
  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 2025FA0000627Control Cable · brokenWHILE ON APPROACH TO LAND AT KXBP BASE TO FINAL, THE CFII AND HER STUDENT HEARD A POP IN THE AIRFRAME. THEY NOTICED THE LEFT FLAP WAS "FLAPPING" A LITTLE AND DIDN'T SEEM TO BE SECURED IN THE PROPER CONFIGURATION COMPARED TO THE RH SIDE. THE CFII TOOK CONTROLSep 2, 2025 · N737ET · Cessna 172N · Trailing Edge Flap Control SystemSDR 2025FA0000409Crankcase · crackedCASE CRACKED AT TOP BASE OF #2 CYLINDER, LEAKING OILJun 18, 2025 · N3080E · Cessna 172N · Reciprocating Engine Power SectionSDR 2022FA0000327None · noneENGINE WAS REMOVED FROM THE AIRCRAFT AND BROUGHT TO US BECAUSE IT STARTED RUNNING RUFF. UPON DISASSEMBLY WE FOUND A PUSHROD DRIVEN THROUGH THE ROCKER ARM. WE FOUND THREE HYDRAULIC LIFTERS SEVERELY WORN ON THE SURFACE THAT CONTACTS THE CAMSHAFT. THE SNAP RING TJul 1, 2022 · Fuselage Structure (General)SDR 2021FA0000165Windscreen · scratchedVISOR SCRATCHED WINDSCREEN CAUSING CRACK AT ALONG THE SCRATCH AND DISLODGING A PIECE OF THE WINDSCREEN FROM THE AIRCRAFT.Jun 8, 2021 · N739BE · Cessna 172N · Flight Compartment WindowsSDR IKBR2020100500013Cylinder · crackedDURING 50HR INSPECTION FOUND CRACKED CYLINDER FIN AND BLENDED NR 1 CYLINDER COOLING FIN, AS PER LYCOMING O-320 OHM SECTION 6 PARAGRAPH 6-26(2). ENGINE TSMOH 1627.0.Oct 5, 2020 · N737LG · Cessna 172N · Reciprocating Engine Cylinder SectionSDR IKBR2020100500014Carburetor · leakingDURING 50HR INSPECTION FOUND CARB P/N 10-5217 LEAKING. INSTALLED OVERHAULED CARB.Oct 5, 2020 · N737LG · Cessna 172N · Fuel Control/Reciprocating EnginesSDR 2020FA0000322Tension Spring · brokenUNUSUAL RUDDER PEDAL DEFLECTION, AIRPLANE TRIM AND CONTROL FEEL WAS NOTED. MAINTENANCE PERSONNEL DISCOVERED LT RUDDER TENSION SPRING WAS BROKEN AT THE AFT END THAT ATTACHES TO THE RUDDER PEDAL. ALONG WITH THE RT SPRING, THIS SPRING PROVIDES TENSION FOR THE RJul 5, 2020 · N1459E · Cessna 172N · Rudder Control SystemSDR 2020FA0000040Rocker · brokenDURING FLIGHT BOTH PUSHRODS ON THE NR 3 CYLINDER BROKE THROUGH THE ROCKER ARMS CAUSING IMMEDIATE LOSS OF POWER ON THAT CYLINDER AND ENGINE TO RUN ROUGH. AIRCRAFT WAS LANDED SAFELY, PARTS WERE CHARGED AND AIRCRAFT WAS RETURNED TO SERVICE. LIKELY CAUSE IS CRACAug 8, 2019 · N3076E · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA190717008Camshaft · failed(CAN) ENGINE HAS 825 TT SINCE OVERHAUL (OTHER MTCE FACILITY 2018). AT 682 HRS TIS, CAMSHAFT REMOVED BY THE OTHER FACILITY DUE TO FAILURE. MARCH 2019 MAINTENANCE ENTRY INDICATES A NEW CAMSHAFT INSTALLED AT THIS TIME. 142 HRS TIS, ENGINE RECEIVED DUE TO METAL COJul 2, 2019 · Cessna 172N · Reciprocating Engine Power SectionSDR CA190717009Lifter · failed(CAN) ENGINE HAS 825 TT SINCE OVERHAUL (OTHER MTCE FACILITY 2018). AT 682 HRS TIS, LIFTERS REMOVED BY THE OTHER FACILITY DUE TO FAILURE. MARCH 20019 MAINTENANCE ENTRY INDICATES NEW LIFTERS INSTALLED. 142 TIS, ENGINE RECEIVED DUE TO METAL CONTAMINATION, LIFTERSJul 2, 2019 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA190717006Rocker · wrong part(CAN) (*SUP*) DURING ENGINE REPAIR, ROCKER FULCRUMS REMOVED FOR CLEANING AND INSPECTION. ONE FULCRUM NOTICEABLY DIFFERENT THAN OTHER 7. VISUALLY DIFFERENT, DIMENSIONS DIFFERENT, AUTOMOTIVE STYLE PRODUCTION MARKS. LACKS: OEM PART NUMBER, MFG NUMBER, HEAT TREAT Jul 2, 2019 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA190717007O-Ring · wrong part(CAN) DURING ENGINE REPAIR, CYLINDER SHROUD TUBES REMOVED. SHROUD TUBE O RINGS PREVIOUSLY INSTALLED WERE BLACK IN COLOUR. BOTH OEM AND PMA O RINGS FOR THIS MODEL OF ENGINE ARE ORANGE IN COLOUR. COMPARED TO THE OEM O RING, THE BLACK O RINGS ARE DIMENSIONALLY DIJul 2, 2019 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA190505001Tube · punctured(CAN) ON RECENT NUMEROUS OCCASIONS COMPANY AIRCRAFT (CESSNA 152/172 EXPERIENCE A RASH OF TIRE DEFLATION (BOTH MAIN AND NOSE WHEEL) WHILE EITHER UPON LANDING OR TAXIING. INVESTIGATION/INSPECTION OF WHEEL ASSEMBLIES REVEALED SMALL PUNCTURE IN INNER TUBES (GOODYEMay 4, 2019 · Cessna 172N · Tire TubeSDR 2020FA0000034Magneto · malfunctionedRIGHT SIDE OF MAG FAILED CHECK. UPON INSPECTION IT WAS FOUND THAT THE LEFT SIDE WAS TIMED TO 22 AND THE RIGHT SIDE WAS TIMED TO 10 BTDC, ALSO THE RIGHT POINTS WERE ONLY OPENING EVERY OTHER CYLINDER CAUSING IT TO ONLY FIRE 2 OF THE 4 CYLINDERS. WHEN I OPENED Oct 1, 2018 · N4844F · Cessna 172N · Magneto/DistributorSDR 2017FA0000607Collar · looseFLAPS FAILED IN FLIGHT: FOUND FLAP SWITCH'S ACTUATING COLLAR UNSCREWED FROM FLAP ACTUATING TUBE ON JACK SCREW.Nov 6, 2017 · N734BB · Cessna 172N · Trailing Edge Flap ActuatorSDR CA160114007Lifter · loose(CAN) UPON TAKEOFF, THE PILOT FELT SIGNIFICANT ENGINE VIBRATION AND REDUCTION OF POWER. AN UNSCHEDULED AND UNEVENTFUL LANDING WAS EXECUTED. ON INSPECTION, MAINTENANCE FOUND THE NR 2 CYLINDER INTAKE HYDRAULIC LIFTER, PN 15B28040/17113IM, HAD LOST THE RETAINING Jan 9, 2016 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 2015FA0000558Bolt · brokenPISTON CONNECTING ROD BOLT BROKE CAUSING PISTON ROD TO PENATRATE ENGINE CRANKCASE CAUSING OIL DEPLETION AND ENGINE FAILURE.Oct 30, 2015 · N999AR · Cessna 172N · Reciprocating Engine Power SectionSDR CA151008006Exhaust Valve · failed(CAN) A FLIGHT INSTRUCTOR AND STUDENT WERE PRACTISING PRECAUTIONARY LANDINGS. AFTER INSPECTING A SUITABLE FIELD, STUDENT PROCEEDED TO OVERSHOOT. AFTER FULL POWER WAS APPLIED, THE ENGINE BEGAN TO RUN ROUGH WITH LOSS OF RPM OBSERVED. THE FLIGHT INSTRUCTOR TOOct 6, 2015 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR FTUR20150526002Rotor · looseREMOVED AND DISASSEMBLE MAGNETOS FOR 500 HOUR INSPECTION AND FOUND ELECTRODE ON ROTOR LOOSE AND CAM EXCESSIVELY WORN.May 26, 2015 · N4818D · Cessna 172N · Magneto/DistributorSDR CA150526001Transponder · smoke(CAN) DURING TAXI OF ACFT, SMOKE WAS NOTICED COMING OUT FROM FACE OF TRANSPONDER. ACFT WAS SHUTDOWN & MAIN BASE NOTIFIED. AN INSPECTION WAS CARRIED OUT FROM A LOCAL AMO & DETERMINED TO BE AN INTERNAL PROBLEM WITH THE TRANSPONDER. THE UNIT WAS REMOVED & ACFTMay 22, 2015 · Cessna 172N · ATC Transponder SystemSDR CA150417007Starter · failed(CAN) BETWEEN 2014-06-20 TO 2014-12-16 STARTER WAS CHANGED 5 TIMES, 2 OF THE TIMES IT WAS A LOADER STARTER AFTER THE O/H STARTER DID NOT WORK PROPERLY. THE STARTER USED WAS PN MZ 4222.Apr 15, 2015 · Cessna 172N · Engine StarterSDR CA141029011Chain · disconnected(CAN) AN ACCEPTANCE INSPECTION OF OUTSIDE CONTRACT WORK, WAS PERFORMED ON THIS AIRCRAFT, AFTER WORK WAS PERFORMED ON THE HORIZONTAL STAB. IT WAS FOUND THAT THE ELEVATOR TRIM CHAIN WAS NOT CONNECTED TO THE SPROCKET AT THE PILOTS TRIM HAND WHEEL. THE TRIM MOVED Oct 28, 2014 · Cessna 172N · Elevator Tab Control SystemSDR 2014FA0000533Stud · backed outENGINE NR 1 CYLINDER EXHAUST ROCKER ARM RETAINER STUD BACKED OUT, LOOSENED, THE CYLINDER HEAD CAUSING THE EXHAUST VALVE TO NOT OPEN.Sep 15, 2014 · Reciprocating Engine Cylinder SectionSDR CA140910010Cylinder Head · damaged(CAN) SEPTEMBER 8, 2014, PILOT REPORTS THAT ENGINE RAN ROUGH IN DOWNWIND OF FIRST CIRCUIT. MAGS FUNCTIONED NORMALLY. NO DIFFERENCE WITH CARB HEAT. ENGINE WAS POPPING ON TAXI BACK IN. ABNORMAL ENGINE NOISE OBSERVED BY MAINTENANCE PERSONEL WHILE AIRCRAFT TAXIEDSep 8, 2014 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA140827008Lifter · damaged(CAN) A/C WAS FLYING FOR 10 MINUTES WHERE THE ENGINE STARTED TO RUN ROUGH. PILOT CHECKED MAGS AND CARB HEAT (NO CHANGE). PILOT DECIDED TO MAKE PRECAUTIONARY LANDING OUTSIDE OF CITY LIMITS ON PRIVATE ROAD INSTEAD OF FLYING OVER CITY. MAINTENANCE WAS SENT TO HAVAug 14, 2014 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA140312008Selector Valve · malfunctionedORIGINAL EQUIPMENT SHOWS LARGE DEVIATIONS IN ACCURACY OF THE FUEL VALVE SELECTOR. WHEN INCORRECTLY POSITIONED, EG BETWEEN BOTH AND LT ENGINE WILL OPERATE AT LOWER RPM. FULL POWER APPLICATION SEES A DEGRADATION OF AVAILABLE POWER 20-30 SECS AFTER ADVANCE OF THMar 7, 2014 · Cessna 172N · Fuel Selector/Shut-Off ValveSDR 2013FA0000718Brake Assy · draggingBRAKE CALIPER DRAGGING.Oct 9, 2013 · N6303E · Cessna 172N · Landing Gear Brake SystemSDR 2013FA0000510Lifter · spalledINSPECTED FILTER DURING ROUTINE OIL CHANGE, FOUND EXCESSIVE FERROUS METAL. DISCUSSION WITH O/H FACILITY CAUSED US TO REMOVE LIFTERS FOR INSPECTION. FOUND 7 OF 8 LIFTERS WITH DAMAGE. SUBSEQUENT DISASSEMBLY OF THE ENGINE REVEALED THE CAMSHAFT WAS ALSO DAMAGEDSep 10, 2013 · N733LK · Cessna 172N · Reciprocating Engine Power SectionSDR CA130918014Oil System · overpressured(CAN) ENGINE FOUND TO HAVE EXTREME LOW OIL PRESSURE WITH EXTREME HIGH OIL TEMP ON INTIAL POST ENGINE INSTALLATION. ENGINE RUN-UP WITH A NEW REFURBISHED O-320-H2AD.Sep 6, 2013 · Cessna 172N · Reciprocating Engine Oil SystemSDR CA130304010Seat Belt · malfunctioned(CAN) ON ROUTINE INSPECTION IT WAS FOUND THAT THE PILOT SIDE SECONDARY SEAT RESTRAINT, PN 505590-403 REEL ASSY OF SERVICE KIT SK210-174B WAS NOT LOCKING WHEN ENGAGED. ADJUSTMENT OF THE CABLE WAS CARRIED OUT IAW ICA AND STILL THE REEL WOULD NOT LOCK INTO PLACEFeb 27, 2013 · Cessna 172N · Emergency EquipmentSDR CA130115017Cable · broken(CAN) PILOT WAS ON APPROACH WHEN HE PULLED CARB HEAT. THE CONTROL CAME OUT TO A POINT WHERE HE COULD SEE IT WAS NOT ATTACHED AND BROKEN. IT WAS THEN PLACED BACK INTO THE HOLE. IT WAS REPORTED THAT HE DID NOT PULL EXCESSIVELY HARD ON IT AND WAS NOT BINDING BEJan 12, 2013 · Cessna 172N · Fuel Control/Reciprocating EnginesSDR 2013FA0000024Seal · leakingFRONT CRANKSHAFT OIL SEAL DETERMINED TO BE LEAKING, AND ALLOWING OIL TO DRIP INTO CABIN HEAT EXCHANGER ON MUFFLER, WHICH WAS THE SOURCE OF A SMOKE ODOR. SEAL REPLACED AND ACFT WAS GROUND RUN AND TEST FLOWN WITHOUT DISCREPANCIES.Jan 8, 2013 · N738JX · Cessna 172N · Engine Collector/Tailpipe/NozzleSDR CA121130007Exhaust Valve · stuck(CAN) DURING ROUTINE ACFT INSPECTION THE NR 3 CYLINDER HAD A READING OF "0" ON A COMPRESSION LEAK DOWN CHECK. UPON FURTHER INSPECTION THE EXHAUST VALVE WAS STUCK IN THE OPEN POSITION. THE CYLINDER HAD APPROXIMATELY 700 HRS ON IT SINCE IT WAS LAST O/H WO 10-1Nov 27, 2012 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA121126016Limit Switch · failed(CAN) UPON DAILY INSPECTION BY DISPATCH, FLAPS WOULD NOT EXTEND. NO MOVEMOVEMENT NOTED WHEN SELECTING FLAPS DOWN. ACFT TAKEN OUT OF SERVICE. MAINTENANCE PERSONAL DISCOVERED FAULTY LIMIT SWITCH DURING INSPECTION. REPLACED SWITCH WITH NEW PN S1906-1. FUNCTNov 23, 2012 · Cessna 172N · Trailing Edge Flap Control SystemSDR CA121121006Cylinder · damaged(CAN) PILOT REPORTED ROUGH RUNNING ENGINE. RETURNED FOR LANDING. ACFT RUN UP AND INSPECTED ON NOV 19, 2012. ENGINE RAN ROUGH ON RUN UP BY MAINTENANCE PERSONAL. UPON INSPECTION -NR 3 PUSHROD TUBE WAS BENT. NR 3 EXHAUST VALVE STUCK OPEN. CYLINDER REMOVED FOR Nov 14, 2012 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA121018003Bearing · cracked(CAN) RUDDER PEDALS BEARING HALF FOUND CRACKED, PROABLE CAUSE FROM EXCESSIVE BRAKING OR RUDDER TRAVEL. REPLACED WITH NEW, NO OTHER DAMAGE FOUND UPON INSPECTION.Oct 17, 2012 · Cessna 172N · Rudder Control SystemSDR CA121016005Flange · broken(CAN) EXHAUST FLANGE BROKEN IN HALF.Oct 16, 2012 · Cessna 172N · Engine Collector/Tailpipe/NozzleSDR 2012FA0000430Points · looseENGINE WOULD NOT START. AFTER INSPECTING MAGNETO FOUND MISFIRE ON TEST STAND. OPENED MAGNETO FOR INSPECTION FOUND CONTACT POINT LOOSE WHERE RIVETED TO GROUND. THE POINTS WERE INSTALLED AS PART OF A 500 INSPECTION REPAIR, WITH APROX 25 HRS IN SERVICE.Jun 22, 2012 · N5089G · Cessna 172 · Magneto/DistributorSDR CA120529013Discharge Nozzle · damaged(CAN) STATEMENT AS GIVEN BY CUSTOMER, THE STUDENT AND INSTRUCTOR WERE RECOVERING FROM A POWER ON STALL EXERSIZE. HE COULD NOT REDUCE THE POWER AS THE THROTTLE WAS JAMMED OPEN AT FULL RPM. NEITHER STUDENT NOR INSTRUCTOR COULD REMEDY THE PROBLEM. INSTRUCTOR May 6, 2012 · Cessna 172 · Fuel Control/Reciprocating EnginesSDR CA120322003Tube · punctured(CAN) NOSEWHEEL TIRE WENT FLAT DURING LANDING ROLLOUT. TUBE FOUND TO HAVE .5" CUT. TIRE INSPECTED AND NO OUTSIDE PUNCTURE OR INTERIOR OBJECT OR DEFECTS FOUND TO CAUSE PROBLEM.Mar 21, 2012 · Cessna 172N · Tire TubeSDR CA111223006Stud · broken(CAN) ENGINE HAD A SUDDEN LOSS OF POWER. ACFT DIVERTED & LANDED SAFELY. UPON INSPECTION THE ENGINE NR 2 CYLINDER INTAKE VALVE RETAINING STUD WAS FOUND BROKEN. CYLINDER INTERIOR INSPECTED W/BOROSCOPE & NO FAULTS FOUND. CYLINDER VALVE DRIVE TRAIN INSPECTED & NODec 22, 2011 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA111208009Skin · damaged(CAN) ON PREFIGHT WALKAROUND, PILOT DISCOVERED THE RT FLAP TOP CENTER SKIN TO BE TORN WHERE THE CONTROL ROD ATTACHES TO THE FLAP BRACKET.Dec 7, 2011 · Cessna 172N · Trailing Edge FlapsSDR CA111201008Tube · split(CAN) AS ACFT TAXIED OUT FOR A TRAINING FLIGHT THE RT TIRE WENT FLAT. UPON REMOVAL OF TIRE AND TUBE IT WAS FOUND THAT THE TUBE HAD A .5" LONG SPLIT IN IT. NO FOREIGN OBJECTS FOUND IN TIRE. THIS HAS BEEN AN ONGOING PROBLEM IN THE LAST FEW YEARS AS THE TUBES Dec 1, 2011 · Cessna 172N · Tire TubeSDR CA111118017Skin · damaged(CAN) DURING A PRE-FLIGHT INSPECTION, PILOT NOTICED ELEVATOR BINDING WHEN ELEVATOR FULL NOSE DOWN. CONSIDERABLE FORCE WAS NECESSARY TO FREE THE ELEVATOR. FLIGHT CANCELLED, ACFT SENT FOR INVESTIGATION. AMO REPORTED TWO TEMP RIVETS BINDING ON HS SKIN WHEN ELENov 17, 2011 · Cessna 172N · Elevator, Plate/SkinSDR CA111117005Bulkhead · cracked(CAN) CRACKS FOUND AT PROPELLER BOLT HOLES.Nov 1, 2011 · Cessna 172N · Propeller Spinner SectionSDR CA110920011Engine · making metal(CAN) ON 100HR SCHEDULED INSPECTION, METAL DEBRIS FOUND IN OIL FILTER. ON FURTHER INSPECTION, SCORING FOUND ON CAMSHAFT AND LIFTER "MISSING A CHUNK (OF METAL)". ACFT REMOVED FROM SERVICE, ENGINE REMOVED FROM AIRFRAME AND SENT FOR MAJOR O/H.Sep 20, 2011 · Cessna 172N · Engine (Reciprocating)SDR 2011FA0000428Pushrod · brokenCYLINDER NR 3 EXHAUST VALVE PUSH ROD BROKE, DUE TO A STUCK VALVE IN THE CLOSED POSITION. THE VALVE WAS NOT STUCK AT THE TIME OF THE INVESTIGATION. NO MARKS WERE SEEN ON THE TOP OF THE PISTON AS VIEWED THROUGH A BORESCOPE. THE SPARK PLUGS HAD ONLY SLIGHT BLAJun 30, 2011 · N172N · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 2011FA0000429Pushrod · brokenCYLINDER NR3 EXHAUST VALVE PUSH ROD BROKEN, DUE TO A STUCK VALVE IN THE CLOSED POSITION. THE VALVE WAS NOT STUCK AT THE TIME OF THE INVESTIGATION. NO MARKS WERE SEEN ON THE TOP OF THE PISTON AS VIEWED THROUGH A BORESCOPE. THE SPARK PLUGS HAD ONLY SLIGHT BLAJun 30, 2011 · N172NT · Cessna 172N · Reciprocating Engine Cylinder SectionSDR CA110609005Tube · splitACFT WAS PARKED ON RAMP AFTER FLIGHT AND A COUPLE HOURS LATER A PASSING PILOT NOTICED THE NOSE TIRE COMPLETELY FLAT. MX REMOVED THE TIRE AND DISCOVERED THAT THE TUBE HAD A 1" LONG SPLIT IN IT. THIS HAS BEEN A COMMON OCCURRENCE ON THIS SIZE OF TUBE OVER THE LAJun 9, 2011 · Cessna 172N · Tire TubeSDR CA110531009Retainer · failedDURING A WALKAROUND THE PILOT NOTICED AN ODD NOSEWHEEL WOBBLE. UPON INSP BY THE AMO, IT WAS DISCOVERED THAT THE INNER BEARING RACE RETAINER ON 1 OF THE WHEEL HALVES HAD CRACKED FREE, ALLOWING THE RACE, BEARING, SEALS AND RINGS TO FALL INTO THE INTERIOR OF THE May 31, 2011 · Cessna 172N · Wheel/Ski/Float
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