Lycoming O-320-H2AD
Service difficulty reports · 326
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 = '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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR CA980430002Crankshaft · cracked(CAN) WHILE CARRYING OUT AD 98-02-08 (LYCOMING SB 505B), INITIAL INSPECTION FOUND MODERATE AMOUNTS OF PITTING IN THE INSIDE DIAMETER OF THE CRANKSHAFT. NDT TESTING, PER THE SB, DETECTED TWO CRACKS, ONE .25 LONG, THE SECOND .50 LONG. THE ENGINE WAS REMOVED.SDR CA980416007Valve · blocked(CAN) ON TAKEOFF, AT 1,100 FEET, THE ENGINE QUIT. THE PILOT RESTARTED THE ENGINE, BUT IT RAN ROUGH AND WOULD NOT EXCEED 1,700 RPM. PILOT RETURNED TO BASE. THE CARBURETOR WAS REMOVED AND TWO STONES, OF A SMOOTH CYLINDRICAL SHAPE OF PORCELAIN OR CERAMIC LIKE SDR AU980348Inlet Valve · sticking(AUS) NR 2 CYLINDER INLET VALVE STICKING DUE TO CARBON BUILD-UP ON THE VALVE STEM. PUSHROD BENT. PART TC: 8,302.SDR 98ZZZX99Coil · crackedDURING 500-HOUR INSPECTION, (PULLED AT 452.2 HOURS TSO), BOTH COILS IN TCM 2000 SERIES MAGNETO WERE FOUND CRACKED. COILS HAD THE FOLLOWING MARKINGS: 38/95 AND 8-9, 35/75 AND 10-10. MAGNETO WAS OVERHAULED BY ELECTROSYSTEMS, INC., FOR LYCOMING. ENGINE OVERHASDR CA971231027Bolt · corroded(CAN) DURING REMOVAL OF WINGS FOR TRANSPORT, THE LT WING FORWARD ATTACHMENT BOLT FOUND CORRODED. REPLACED.SDR CA971117005Door · damaged(CAN) PILOT REPORTED ENGINE NOT DEVELOPING FULL POWER. GROUND RUN CONFIRMED THIS. INSPECTION FOUND PIECE OF CARBURETOR HEAT VALVE SEAL MATERIAL (.25 INCH BY 3 INCHES) STUCK AROUND THE VENTURI OF THE CARBURETOR. THE PIECE WAS REMOVED AND THE SEAL WAS TRIMMESDR 97ZZZX4327Distributor Gear · teeth failedENGINE FAILED PRE-TAKEOFF MAGNETO CHECK. PILOT RAN ENGINE AT HIGH RPM AND LEANED ENGINE TO SEE IF PLUGS WERE FOULED. AFTER REDUCING POWER ON SECOND MAGNETO CHECK, MAG WAS DEAD. FOUND 3 TEETH MISSING ON DISTRIBUTOR GEAR. MAG HAS 1,045 HOURS TSMO.SDR CA970915001Magneto · failed(CAN) ENGINE RAN ROUGH ON THE GROUND RUN AND WAS SHUTDOWN. THE PILOT FAILED IN HIS ATTEMPT TO RESTART THE ENGINE FOR TROUBLESHOOTING. REMOVAL OF THE MAGNETO REVEALED THE DRIVE TEETH WERE BROKEN. THE MAGNETO WAS REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICESDR AU970784Spar · cracked(AUS) HORIZONTAL STABILISER FORWARD SPAR PNO 0523001-98 AND CENTRE SKIN PNO 0532001-23 CRACKED - SPAR HAD PREVIOUSLY BEEN REPAIRED -FOUND DURING INSPECTION IAW AD/C170/59 AND CESSNA SB 94-8SDR AU970661Screw · missing(AUS) CARBURETTOR MIXTURE ADJUSTMENT SCREW MISSING - SUSPECT BROKEN FRICTION SPRING ALLOWED SCREW TO UNWINDSDR AU970538Bulkhead · cracked(AUS) LOWER AFT DOOR POST BULKHEAD CRACKED - FOUND DURING INSPECTION IAW CESSNA SEB 97-1SDR 97ZZZX2659Pushrod · failedBALL END OF PUSHROD BROKEN OFF. SUBITTER STATED A POSSIBLE MANUFACTURE MACHINING DEFECT.SDR 97ZZZX2708Piston Pin · failedCATASTROPHIC FAILURE AFTER TAKEOFF FROM CLEAR LAKE, CA ON 5-14-97. PILOT TURNED BACK AND MADE UNPOWERED LANDING AT AIRPORT. FOUND CYLINDER BROKEN OFF ENGINE. PISTON BROKEN, CRANKSHAFT BROKEN. PISTON PIN BROKEN IN HALF.SDR AU970530Stud · broken(AUS) NO1 CYLINDER EXHAUST VALVE ROCKER STUD BROKEN - INLET VALVE BROKEN AND PUSHROD BENTSDR AU970434Skin · mis repair(AUS) AIRCRAFT HAS EVIDENCE OF WING SKIN REPLACEMENT AS WELL AS DISASSEMBLY OF AILERONS, FLAPS, TAILPLANE AND HORIZONTAL STABILISER - REPAIR WORK IS OF SUB-STANDARD QUALITY - NO EVIDENCE OF REPAIR WORK IN LOG BOOK - PERSONNEL/MAINTENANCE ERROR -UNAPPROVED REPASDR AU970439Magneto · failed(AUS) MAGNETO FAILEDSDR AU970376Loom · mis routed(AUS) WIRING LOOM BEHIND INSTRUMENT PANEL INTERFERING WITH CORRECT OPERATION OF ELEVATOR CONTROL IN THE `FULL UP' POSITION - AILERON CHAIN TO AILERON CABLE ATTACHMENT LOCKING SPLIT PIN HAD ONE LEG BROKEN OFF AND DAMAGED INTERCOM WIRINGSDR AU970343Spring · cracked(AUS) RH RUDDER PEDAL RETURN SPRING BROKENSDR AU970436Valve · unapproved part(AUS) WHEN FITTING A NEW CYLINDER KIT TO THE ENGINE IT WAS FOUND THAT THE INCORRECT EXHAUST VALVE WAS FITTED TO THE CYLINDER - EXHAUST VALVE PNO LW16740 (ANGLE VALVE CYLINDER) WAS FITTED INSTEAD OFTHE CORRECT PNO LW19001 - PERSONNEL/MAINTENANCE ERROR - UNAPPROSDR CA970421078Blade · stone damage(CAN) PROPELLER RECEIVED FOR CORROSION INSPECTION. BLADE FACE FOUND WITH STONE DAMAGE AND CORROSION, GRINDING OF STONE DAMAGE AND THE LEADING EDGE REQUIRED FILLING.SDR CA970421083Blade · corroded(CAN) PROPELLER RECEIVED FOR CORROSION INSPECTION. BLADE FACE FOUND CORRODED, LEADING EDGE DAMAGE, ANGLES AND FACE ALIGNMENT OUT OF SPECIFICATIONS.SDR AU970342Spring · broken(AUS) LH RUDDER PEDAL RETURN SPRING BROKENSDR CA970422005Engine · defective(CAN) NEWLY OVERHAULED ENGINE (6.0 HOURS) EXPERIENCED OIL PRESSURE PROBLEMS. AT NORMAL CRUISE 2400 RPM OIL PRESSURE REMAINS AT 51 PSI. SYSTEM TROUBLESHOOTING CARRIED OUT, OIL FILTER FOUND COLLAPSED DUE TO BUILD UP OF PRESSURE IN THE OIL FILTER. ENGINE REMOVED SDR 97ZZZX1953Gear Tooth · failedENGINE STARTED TO MAKE A KNOCKING NOISE WHILE IN-FLIGHT. AS THE ENGINE WAS THROTTLED, BACK NOISE BECAME MORE PRONOUNCED. AIRCRAFT WAS LANDED AT NEAREST AIRPORT. INVESTIGATION OF KNOCKING NOISE REVEALED THAT ONE TOOTH WAS MISSING FROM THE CRANKSHAFT GEAR. ESDR CA970306006Yoke · cracked(CAN) CONTROL YOKE CRACKED JUST ABOVE ELEVATOR ATTACH BEARING. REPLACED.SDR CA970221005Carburetor Screw · loose(CAN) THE ENGINE DID NOT STOP AFTER THE MIXTURE CONTROL WAS CLOSED. THE ENGINE WAS STOPPED BY SHUTTING OFF THE MAGS. INSEPCTION FOUND THAT FOUR SCREWS THAT HOLD THE CARBURETOR HALVES TOGETHER WERE LOOSE AND ONE OF THE SCREWS WAS BROKEN. THE BROKEN SCREW WAS RESDR 97ZZZX1065Coil · crackedBENDIX MAGNETO OVERHAULED BY ELECTRO SYSTEMS, REPAIR STATION UT2R22GL. MAGNETO WAS FURNISHED WITH LYCOMING FACTORY OVERHAULED ENGINE IN 1995. MAGNETO WAS REMOVED FOR 500-HOUR INSPECTION AND C/W AD 96-12-07 AT 489.3 SMOH FOR THE FIRST TIME. FOUND ONE EACH COSDR 97ZZZX1066Magneto · teeth missingBENDIX/TCM DUAL MAGNETO REMOVEDF FROM LYCOMING. FACTORY OVERHAULED ENGINE AT SMOH 489.3 FOR 500-HOUR INSPECTION AND C/W AD 96-12-07. FOUND MAGENTO DISTRIBUTOR GEARS WITH THREE TEETH MISSING FROM ONE GEAR AND ONE-HALF TOOTH MISSING FROM OTHER GEAR. CONTINUEDSDR CA970212008Carburetor · icing(CAN) THE AIRCRAFT WAS FLYING IN -30 DEGREES CELCIUS TEMPERATURE. AFTER 30 MINUTES OF FLIGHT THE ENGINE QUIT. THE PILOT MANUALLY PRIMED THE ENGINE AND IT RAN AFTER EACH SHOT. POST FLIGHT INSPECTION OF THE CARBURETOR AND FILTER FOUND MANY WATER DROPLETS. IT IS SDR CA970130013Magneto · broken teeth(CAN) SHORTLY AFTER TAKEOFF THE ENGINE BEGAN TO RUN ROUGH AND LOSE POWER. AIRCRAFT RETURNED TO BASE. RUN UP THE FOLLOWING DAY REVEALED THE LEFT MAGNETO WAS DEAD. DISASSEMBLY OF THE MAGNETO REVEALED BROKEN TEETH ON THE DISTRIBUTOR GEARS.SDR 97ZZZX363Magneto · coil crackedINSP FOUND LT AND RT COILS CRACKED. LT AND RT BREAKERS BURNED, LT AND RT ROTORS BURNED AND DISTRIBUTER BLOCK BURNED POSTS.SDR CA961120002Oil Ring · failed(CAN) LOSS OF ENGINE POWER IN FLIGHT. ENGINE CONTINUED TO OPERATE AND FLIGHT CONTINUED TO DESTINATION. POST FLIGHT INSPECTION FOUND #4 CYLINDER OIL RING FAILED.SDR 97ZZZX828Discharge Tube · detachedCARBURETOR PUMP DISCHARGE TUBE ASSY CAME ADRIFT INGESTING IN ENGINE, KNOCKING LOOSE THE SOLID COMBUSTION PARTICLES IN THE COMBUSTION CHAMBER WHICH FOULED A NUMBER OF THE SPARK PLUGS SIMULTANEOUSLY LOSING 50 PERCENT OR MORE OF THE POWER. BEING NEXT TO THE AIRSSDR 96ZZZX5312Magneto · excess wearAFTER INSTALLING A FACTORY REBUILT 3000 SERIES, MAGNETO AIRCRAFT WAS PLACED BACK ON RENTAL STATUS ON 9-27-96, A FLIGHT INSTRUCTOR NOTICED TAKEOFF POWER WAS DOWN BY APPROXIMATELY 200 RPM AT FULL THROTTLE. MAINTENANCE INVESTIGATION REVEALED BOTH SETS OF MAGNETOSDR 96ZZZX5226Valve · stem failedPRECAUTIONARY LANDING MADE DUE TO POWER LOSS AND FLUCTUATING OIL PRESSURE. ENGINE WOULD MAINTAIN 1,800 RPM, AT FULL THROTTLE. NR 3 CYLINDER EXHAUST VALVE FAILED JUST ABOVE HEAD/STEM RADIUS. SECONDARY CYLINDER AND PISTON DAMAGE REMNENTS OF VALVE FOUND IN MUFSDR 96ZZZX5311Magneto · failedDURING CRUISE FLIGHT, ENGINE STOPPED PRODUCING POWER. AN OFF-AIRPORT LANDING MADE WITHOUT INCIDENT. MAINTENANCE INSPECTION REVEALED BOTH SETS OF POINTS IN THE DUAL 2000 SERIES MAGNETO HAD CLOSED CAUSING ENG TO STOP. POINTS WERE RESET AND ENG RAN AND PRODUCESDR CA961003002Alternator · failed(CAN) THE AIRCRAFT RETURNED WITH A DEAD BATTERY. THE ALTERNATOR WAS FOUND TO HAVE NO OUTPUT. ALTERNATOR REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.SDR 96ZZZX4148Bearing · failedMAGNETO POINTS WERE NOT OPENING DUE TO EXCESSIVE WEAR ON THE POINTS' CAM FOLLOWER. THIS WEAR WAS ACCELERATED BY A HEAT BUILD-UP ON THE MAGNETO SHAFT GENERATED BY A FAILED REAR BEARING.SDR CA960826092Spar · cracked(CAN) DURING INSPECTION A CRACK WAS DETECTED IN THE CENTRE OF THE SPAR. SPAR WAS REPLACED. CRACKED DETECTED WAS APPROXIMATELY 1 INCH LONG.SDR AU961106Engine · rough running(AUS) ENGINE RAN ROUGH FOR SEVERAL SECONDS - SUSPECT FUEL PROBLEM - INVESTIGATION COULD FIND NO CAUSE AND THERE WAS NO REPETITION OF THE PROBLEMSDR CA960826097Stud · broken(CAN) DURING FLIGHT ENGINE STARTED TO RUN ROUGH. ENGINE POWER REDUCED AND AIRCRAFT LANDED ON HIGHWAY. GROUND INSPECTION FOUND #4 CYLINDER EXHAUST ROCKER STUD BROKE ALLOWING THE ROCKER ARM AND STUD TO FALL INTO THE BOTTOM OF THE ROCKER COVER. THIS RESTRICTED THSDR 96ZZZX3694Case · crackedLEFT CASE CRACKED BELOW NR 2 CYLINDER BASE. CRACK WAS ABOUT 2.5 INCHES LONG.SDR 96ZZZX3763Crankcase · crackedRIGHT CRANKCASE CRACKED BELOW NR 1 CYLINDER BASE. CRACK WAS APPROXIMATELY 6 INCHES LONG. CASE WAS NOT REPAIRABLE.SDR 96ZZZX4785Spring · brokenCHECKED IGNITION TIMING. FOUND APROXIMATELY 90 DEGREES OFF. REMOVED MAGNETO, FOUND IMPULSE COUPLING SPRING BROKEN. CHECKED I-C PER AD 78-09-07R3/AD 96-12-0-7 AND FOUND SATISFACTORY. REVIEWED MAG O/H DATE FAXED BY INS. ADJ. FOUND I-C SPRING, INSP AND REUSSDR AU960935Spar · cracked(AUS) TAILPLANE FORWARD SPAR AND CENTRE SKIN CRACKED - FOUND DURING INSPECTION IAW AD/C170/59SDR AU960971Switch · burnt(AUS) ENGINE IGNITION SWITCH CONTACT CUPS (3OFF) PNO A-1196-A AND TERMINAL BOARD PNO A-546-A WORN AND BURNT - FOUND DURING INSPECTION IAW AD/ELEC/59 AMDT1SDR AU960905Crankshaft · faulty(AUS) CRANKSHAFT HAD 0.9144MM (0.036IN) RUNOUT AT PROPELLER FLANGE - CAMSHAFT LOBES (2OFF0 BADLY WORN - LIFTER BODIES BADLY PITTED -FOUND DURING ENGINE BULK STRIPSDR 96ZZZX3077Cylinder · defectiveROCKER STUD BACKED OUT CAUSING EXCESSIVE VALVE CLEARANCE WHICH CAUSED THE PUSHROD TO GET JAMMED AND BENT. CYLINDER WAS IN C/W SB 412B (AD 77-20-07) WHICH REQUIRES STUDS TO BE LOCKTITE INTO POSITION. CYLINDER WAS MARKED IAW THIS PROCEDURE. SUBMITTER SUGGESTSSDR AU960504Distributor · damaged(AUS) MAGNETO RH SIDE DISTRIBUTOR GEAR BUSHING LOOSE CAUSING DAMAGE TO THE GEAR SHAFT - MAGNETO CAPACITOR OPEN CIRCUITEDSDR AU960469Clamp · faulty(AUS) DUAL MAGNETO RETAINING CLAMP ALLOWED MAGNETO TO ROTATE ON THE MOUNTING
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