JASC 8520

Service difficulty reports · 2,214

Reports filed under 8520 · Reciprocating Engine Power Section, newest first.

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 jasc_code = '8520'
  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 98ZZZX2598Stud · failedCYLINDER HOLD DOWN STUD BROKE UNDER NUT. SUSPECT DEFECTIVE STUD.Jun 11, 1998 · N103BA · Beech 65B80SDR CA980706004Case · fractured(CAN) AFTER TAKEOFF WITH CRUISE POWER SELECTED, THERE WAS SEVERE VIBRATION FROM THE LEFT HAND ENGINE. SMOKE, FLAMES, AND OIL WERE SEEN COMING FROM THE ENGINE COWLING. THE ENGINE WAS SHUT DOWN. POST-FLIGHT INSPECTION FOUND THERE WERE TWO HOLES IN THE UPPER EJun 10, 1998 · Cessna 401ASDR CA980623020Crankshaft · bent(CAN) A HEAVY ENGINE VIBRATION, DURING GROUND OPERATIONS, WAS REPORTED. INSPECTION REVEALED THE CRANKSHAFT WAS OVER TOLERANCE PER THE MANUFACTURER'S OVERHAUL MANUAL.Jun 9, 1998SDR 98ZZZX2444Crankcase · crackedWHILE INVESTIGATING OIL LEAK, FOUND ENGINE CASE CRACKED RT FORWARD AFT BOSS WHERE ALTERNATOR BRACKET ATTACHES. ENGINE IS LYCOMING FACTORY OVERHAUL, INSTALLED 8-30-97, 340 HRS SMOH.Jun 5, 1998 · N8085A · Piper PA28161SDR CA980707018Rod · worn(CAN) DURING INSPECTION, ACTUATOR INSTALLED ON NR 1 ENGINE FOUND LEAKING. SHOP REPORT FOUND PISTON ROD AND HOUSING ATTACH BUSHINGS WORN BEYOND LIMITS. COMPONENT OVERHAULED AND RETURNED TO STOCK SERVICEABLE.Jun 4, 1998 · Doug DC1030SDR CA980610017Crankshaft · corroded(CAN) FOUND CORROSION IN THE AREA (INNER BORE) OF THE CRANKSHAFT, AS SPECIFIED IN FAA AD 98-02-08, NO CRACKS FOUND. REPETITIVE INSPECTION IS REQUIRED.Jun 4, 1998 · Cessna 172NSDR CA980610016Crankshaft · corroded(CAN) FOUND CORROSION IN THE AREA (INNER BORE) OF THE CRANKSHAFT, AS SPECIFIED IN FAA AD 98-02-08, NO CRACKS FOUND. REPETITIVE INSPECTION REQUIRED.Jun 4, 1998 · Cessna 172NSDR CA980707015Pin · fractured(CAN) SHORTLY AFTER TAKEOFF, THE CREW NOTICED A POWER FLUCTUATION ON NR 1 ENG AND SELECTED THE BOOSTER PUMP ON TO STABILZE ENGINE, WITH NO IMPROVEMENT. ENG STARTED TO SURGE, LOSS OF MANIFOLD AND OIL PRESSURE. A SUBSTANTIAL AMOUNT OF OIL WAS COMING FROM THE EJun 2, 1998 · Piper PA31350SDR 98ZZZX2273Camshaft Lobe · spalledDURING 100-HOUR INSPECTION AND INSPECTION FOR REPORTED SLIGHT APPARENT POWER LOSS, FOUND NR 2 CYLINDER EXHAUST VALVE LIFTER BODY AND CAMSHAFT LOBE FAILED PREMATURELY. CAMSHAFT AND LIFTERS HAD BEEN RECONDITIONED AND REGROUND AT MAJOR OVERHAUL INSTEAD OF NEW. Jun 2, 1998SDR CA980706013Crankshaft · corroded(CAN) A VISUAL INSPECTION OF THE INNER DIAMETER OF THE CRANKSHAFT SHOWED VISIBLE CORROSION PITTING (AD 98-02-08 REFERS). AN ON-WING FLUORESCENT PENETRANT INSPECTION (FPI), CARRIED OUT BY A SUITABLY RATED AMO, FOUND NO CRACKS. FURTHER MEASURING OF THE INNER DJun 1, 1998 · Cessna 172NSDR CA980615002Crankshaft · worn(CAN) CRANKSHAFT INSPECTED AS PRE FAA AD 98-02-08. NUMEROUS CORROSION PITTING FOUND EXCEEDING THE MAXIMUM INTERNAL DIMENSIONAL LIMITS. CRANKSHAFT SCRAPPED.Jun 1, 1998 · Cessna 172MSDR 98ZZZX3928Crankshaft · failedENGINE VIBRATED 5-10 SECONDS BEFORE SEIZING, NO OTHER INDICATIONS OF PENDING FAILURE WERE NOTED. AT ENGINE TEARDOWN, THE CRANKSHAFT WAS FOUND BROKEN AT THE FORWARD END OF THE NR 4 CONNECTING ROD JOURNAL. MAINTENANCE RECORDS ONLY WENT BACK TO LAST OVERHAUL ANMay 29, 1998 · N6414Q · Mooney M20FSDR AU980824Bolt · broken(AUS) ENGINE CONNECTING ROD BOLT FAILED. PART TOTAL CYCLES: 1,315.May 28, 1998 · Beech 58SDR 98ZZZX2170Connect Rod · failedON CLIMB-OUT FROM FAI, RIGHT ENGINE FAILED. NR 5 CYLINDER SEPARATED FROM ENGINE, NR 5 CONNECTING ROD BROKEN AT PISTON PIN. CASE RECEIVED MASSIVE DAMAGE.May 28, 1998 · N300ED · Piper PA31350SDR 98ZZZX2172Tappet · spalledINSPECTION FOUND SPALLED TAPPET PROBLEM. THE CAMSHAFT WAS IN GOOD SHAPE, BUT DID NEED A REGRIND.May 27, 1998 · N733MU · Cessna 172NSDR 98ZZZX2183Connect Rod · looseENGINE EXPERIENCED HIGH OIL TEMPERATURE 60 HOURS AFTER INSTALLING FACTORY OVERHAULED ENGINE. THERE WAS NOISE WHEN TURNING THE PROPELLER AFTER ENGINE SHUT DOWN. FACTORY SERVICE REP PULLED NR 3 AND NR 4 CYLINDERS AND FOUND THAT NR 3 AND NR 4 CONNECTING RODS HAMay 26, 1998 · N51302 · Cessna 172MSDR 98ZZZX2271Connecting Rod · seizedENGINE SEIZED IN-FLIGHT. FOUND THAT THE NR 2 ROD SEIZED AND BROKE AT THE CRANK JOURNAL AND THE PISTON BROKE AT THE PIN HOLE, ALSO, PISTON SEIZED IN CYLINDER. FOUND TWO PIECES OF PUSHROD O-RINGS IN OIL SCAVENGE LINE FITTING AT BOTTOM OF CASE. DURING MAINTENAMay 25, 1998 · N10UV · Diamon DA20A1SDR CA980602014Crankshaft · pitted(CAN) WHILE COMPLYING WITH AD 98-02-08 INSPECTION, PITS WERE FOUND IN THE CRANKSHAFT BORE.May 23, 1998 · Piper PA28160SDR CA980603003Bolt · failed(CAN) LOSS OF POWER ON NR 1 ENGINE FOLLOWED BY OIL LOSS. ENGINE WAS SHUTDOWN. INSPECTION FOUND THE STUDS AND THRU BOLT ON THE ENGINE CASING BROKEN.May 21, 1998 · Piper PA31SDR AU980562Bolt · failed(AUS) LT ENGINE NR 6 CYLINDER HOLD-DOWN BOLTS/STUDS (6OFF) BROKEN.May 21, 1998 · Piper PA31SDR AU980538Crankcase · out of limits(AUS) ENGINE CRANKCASE TUNNEL MEASUREMENTS OUT OF LIMITS.May 18, 1998SDR 99ZZZX914Rod · damagedFOUND CONNECTING ROD BOLT-TO-HOLE CLEARANCE ON ROD CAP EXCESSIVELY TIGHT (OUT OF FACTORY LIMITS) TO THE POINT OF HAVING TO HAMMER THE BOLT INTO THE ROD CAP BOLT HOLE. AFTER INVESTIGATION WITH INSIDE AND OUTSIDE MICROMETERS AND CLOSE OBSERVATION OF THE INSIDE May 15, 1998SDR AU980536Nut · mismanufactured(AUS) CONNECTING ROD NUT INCORRECTLY MACHINED AT FACTORY.May 13, 1998SDR 98ZZZX4453Camshaft · scoredTHE INTERNAL TACHOMETER DRIVE SEIZED UP AND SHEARED THE TACH DRIVE PIN. REMOVAL OF THE TACH DRIVE COVER REVEALED METAL HAD PASSED THROUGH THE OIL PUMP. FURTHER INVESTIGATION REVEALED THE NR 5 CYLINDER VALVE LIFTER AND CAM LOBE WERE BREAKING UP AND SCOURED. May 13, 1998 · N952CC · Cessna 182PSDR 98ZZZX2236Crankshaft · failedENGINE RPM SURGED AND FLUCTUATED. ENGINE LOST POWER. AIRCRAFT FLIPPED OVER DURING EMERGENCY LANDING. MAJOR DAMAGE, NO INJURIES. NO PROPELLER STRIKE. PRE TEAR-DOWN EXAM INDICATES THE ENGINE CRANKCHAFT IS BROKEN BETWEEN NR 2 AND NR 3 CYLINDERS.May 13, 1998 · N7140H · Cessna A185FSDR 98ZZZX1858Camshaft · wornENGINE HAS LOW POWER. REMOVED CYLINDERS FOR TOP OVERHAUL AND FOUND CAM HAD BAD LOBES. TBO ON THIS ENGINE IS 2,000 HOURS.May 6, 1998 · N6341S · Cessna TR182SDR AU980601Crankshaft · pitted(AUS) CRANKSHAFT PITTED IN AREA OF CRANKSHAFT FELT SEAL. THE DEPTH OF THE PITTING WAS 0.127MM TO 0.254MM (0.005 INCH TO 0.010 INCH). SUSPECT CAUSED BY MOISTURE RETENTION OF THE FELT SEAL.May 5, 1998 · Cessna 182KSDR 98ZZZX2439Crankshaft · failedAIRCRAFT DESTROYED AS A RESULT OF FORCED LANDING INDUCED BY A SEPARATION OF THE ENGINE CRANKSHAFT. SUBSEQUENT INVESTIGATION DISCLOSED A FATIGUE FAILURE ADJACENT TO THE CENTER MAIN BEARING JOURNAL. THIS ENGINE HAD EXPERIENCED 2 PREVIOUS PROPELLER STRIKES WHICMay 5, 1998 · N24435 · Piper PA38112SDR 98ZZZX1997Shaft · brokenREMOVED SUCTION SCREEN FOUND CHUNK OF METAL. REMOVED MAGS, LEFT IDLER GEAR 'LOOSE'. REMOVED ACCESSORY CASE, SHAFT-CRANKSHAFT IDLER BASE BROKEN.May 5, 1998 · N51700 · Cessna 172PSDR 98ZZZX2111Camshaft · failedIN CRUISE FLIGHT, PILOT LOST PROP CONTROL, FEATHERED, AND LANDED. FOUND CAMSHAFT BROKEN AT GOVERNOR DRIVE END. RECORDS SHOW THIS WAS A NEW PART. INSTALLED AT OVERHAUL ON 3/89.May 4, 1998 · N40592 · Piper PA23250SDR 98ZZZX1855Gear Lockplate · brokenDURING SCHEDULED ENGINE INSPECTION, CRANKSHAFT LOCK TAB WAS FOUND IN THE OIL SUMP SCREEN. REMOVED SUMP AND ACCESSORY HOUSING TO VERIFY. TAB ON BOLT WAS CONFIRMED BROKEN. CRANKSHAFT GEAR BOLT WAS FOUND TO HAVE MINIMAL TORQUE REMAINING. (LESS THAN 100 INCH/PApr 30, 1998 · N191ND · Piper PA44180SDR CA980602085Rod · failed(CAN) LARGE END OF NR 7 CYLINDER CONNECTING ROD FAILED.Apr 28, 1998 · Doug DC3CS1C3GSDR AU980802Bearing · failed(AUS) NR 4 CYLINDER CONNECTING ROD BEARING FAILED. METAL CONTAMINATION OF OIL SYSTEM. SUSPECT CAUSED BY INCORRECT CRANKSHAFT BEING INSTALLED IN THE ENGINE. LTIO-540-J2BD CRANKSHAFT INSTALLED INSTEAD OF TIO-540-J2BD CRANKSHAFT. CRANKSHAFTS HAVE THE OIL PASSApr 21, 1998 · Piper PA31350SDR 98ZZZX2698Snap Ring · misinstalledTHE ENGINE WHICH CONTAINED THESE PARTS WAS SHIPPED DIRECTLY FROM TCM AFTER REMANUFACTURE. UPON DISASSEMBLY, FOUND THE CRANKSHAFT COUNTERWEIGHT PIN SNAP RINGS WERE INSTALLED WITH THE SMOOTH ROUNDED SIDE TO THE OUTSIDE. THE O-470 OVERHAUL MANUAL (72-50-07 PARAApr 21, 1998SDR CA980819004Crankshaft · pitting(CAN) PITTING CORROSION FOUND DURING INSPECTION IN ACCORDANCE WITH AD 98-02-08. LIQUID PENETRANT INSPECTION CARRIED OUT. NO CRACKS EVIDENT. CRANKSHAFT IS ON 100 HOUR RE-INSPECTION CYCLE.Apr 20, 1998 · Cessna 172PSDR 98ZZZX2275Connect Rod · failedNR 3 CYLINDER ROD BROKE IN CRUISE FLIGHT.Apr 20, 1998 · N66HW · Beech B60SDR 98ZZZX1994Crankcase Stud · brokenDURING THE COURSE OF A 100-HOUR INSPECTION, THE MECHANIC NOTICED THE LEFT ENGINE, NR 1 CYLINDER, MOST FORWARD UPPER STUD HAD BROKEN OFF FLUSH WITH THE CYLINDER BASE/SKIRT. THE CYLINDER WAS REMOVED AND THE CASE WAS INSPECTED FOR CRACKS AND ANY SIGNS OF CHAFINGApr 20, 1998 · N402BF · Cessna 402BSDR AU980491Dowel · sheared(AUS) CRANKSHAFT ACCESSORY DRIVE GEAR POSITIONING DOWEL SHEARED. AIRCRAFT SUFFERED A LOSS OF POWER AND WAS DAMAGED DURING A FORCED LANDING. ENGINE HAD SUFFERED A PROPELLER STRIKE PRIOR TO THE LAST OVERHAUL AT WHICH THE DOWEL PIN WAS INSPECTED BUT NOT REPLACEApr 18, 1998 · Piper PA28181SDR CA980819002Crankshaft · pitting(CAN) PITTING CORROSION FOUND DURING INSPECTION IN ACCORDANCE WITH AD 98-02-08. LIQUID PENETRANT INSPECTION CARRIED OUT. NO CRACKS EVIDENT. CRANKSHAFT IS ON 100 HOUR RE-INSPECTION CYCLE.Apr 16, 1998 · Cessna 172PSDR CA980513006Camshaft · worn(CAN) DURING INSPECTION, METAL PARTICLES WERE FOUND IN THE OIL. FURTHER INVESTIGATION FOUND NR 4 CAM LOBE WORN AND PITTED.Apr 15, 1998 · Cessna 150MSDR 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.Apr 15, 1998 · Cessna 172NSDR CA980424021Crankshaft · corroded(CAN) INSPECTION OF CRANKSHAFT CARRIED OUT PER LYCOMING SERVICE BULLETIN 505B. CORROSION PITS WERE FOUND. FLUORESCENT PENETRANT INSPECTION CARRIED OUT. NO CRACKS NOTED.Apr 15, 1998 · Piper PA28140SDR CA980424020Crankshaft · corroded(CAN) INSPECTION OF CRANKSHAFT CARRIED OUT PER LYCOMING SERVICE BULLETIN 505B. CORROSION PITS WERE FOUND. AREA HONED, PITS WERE REMOVED AND PROTECTIVE COATING WAS APPLIED PER LYCOMING SB 530.Apr 15, 1998 · Piper PA28140SDR CA980424019Crankshaft · corroded(CAN) INSPECTION OF CRANKSHAFT CARRIED OUT PER LYCOMING SERVICE BULLETIN 505B. CORROSION PITS WERE FOUND. FLUORESCENT PENETRANT INSPECTION CARRIED OUT. NO CRACKS NOTED.Apr 15, 1998 · Piper PA28140SDR CA980424018Crankshaft · corroded(CAN) INSPECTION OF CRANKSHAFT CARRIED OUT AS PER LYCOMING SERVICE BULLETIN 505B. CORROSION PITS WERE FOUND. AREA HONED, PITS WERE REMOVED AND PROTECTIVE COATING WAS APPLIED PER LYCOMING SB 530.Apr 15, 1998 · Piper PA28140SDR 98ZZZX2130Bolt · failedTHIS ONE OUT OF EIGHT NEW CONNECTING ROD BOLTS STRETCHED AND DECREASED IN DIAMETER WHEN BEING TORQUED TO OEM SPECIFICATION DURING ENGINE OVERHAUL. ALL EIGHT BOLTS ARE 'NOT' BEING PUT INTO SERVICE. BOLT WOULD NOT TORQUE TO OEM SPECIFICATIONS.Apr 15, 1998 · N8701D · Piper PA22160SDR 98ZZZX1996Crankcase Bolt · crackedDURING THE COURSE OF A 100-HOUR INSPECTION, THE MECHANIC NOTICED A SIZEABLE AMOUNT OF OIL ON THE TOP LEFT PORTION OF THE ENGINE CASE. A CLOSER INSPECTION REVEALED A CRACK APPROXIMATELY 1.6250 INCH LONG EMITTING FROM THE 9TH BACKBONE BOLT (COUNTING FROM FRONT Apr 15, 1998 · N5040Q · Cessna 402BSDR 98ZZZX1670Crankcase · crackedTHE CRANKCASE SPLIT FROM NR 6 CYLINDER HOLE TO OIL FILLER HOLE ON TOWARD TO THE FRONT OF THE CASE. THIS OCCURRED IN CONJUNCTION WITH THE CYLINDER MOUNTING STUD IN THIS IMMEIDATE AREA FAILING. THE CIRCUMSTANCES UNDER WHICH IT OCCURED WERE 'NORMAL OPERATION'. Apr 14, 1998 · N756QP · Cessna U206GSDR 98ZZZX2569Tappet · brokenDURING DAILY CHECK, MECHANIC FOUND EXCESSIVE OIL LEAK ON LEFT ENGINE. COWLING REMOVED AND FOUND NR 3 CYLINDER INTAKE PUSH HOUSING BROKEN. AFTER REMOVAL OF HOUSING, FOUND HYDRAULIC TAPPET BODY BROKEN. ENGINE REMOVED TO INVESTIGATE. MORE INFORMATION WILL BE Apr 13, 1998 · N901VL · Bnorm BN2AMK3SDR 98ZZZX1861Connecting Rod · failedCONNECTING ROD BROKE AT PISTON PIN AREA. REMAINING POSTION OF ROD PUNCHED HOLE IN CRANKCASE, DAMAGED PISTON, AND RESULTED IN ENGINE SHUT DOWN.Apr 11, 1998 · N7111M · Cessna 175
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