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 CA980311012Engine · friction(CAN) UNKNOWN CAUSE OF FRICTION IN THE CRANKCASE. ENGINE SENT FOR INVESTIGATION AND REPAIR.Feb 5, 1998 · Piper PA31325SDR AU980280Crankcase · cracked(AUS) ENGINE CRANKCASE RT HALF CRACKED IN NR 4 MAIN BEARING TUNNEL AND LT HALF CRACKED IN NR 2 AND NR 3 MAIN BEARING TUNNELS. CRANKSHAFT CRACKED ON NR 4 MAIN BEARING. CRACK LENGTH APPROXIMATELY 50.8MM (2 INCHES).Feb 4, 1998SDR 98ZZZX3079Crankshaft · splitCRANKSHAFT SPLIT.Feb 1, 1998 · N663VL · Bnorm BN2B26SDR 99ZZZX1061Camshaft · wornOVER THE LIFE OF THE ENGINE, THIS ENGINE HAS BEEN ON OIL ANALYSIS. THE TEST SHOWED A TREND OF HIGH AL AND FE STARTING AT 529 HOURS WITH THE RECOMMENDATION FOR RE-TEST IN 25 HOURS. THE TREND CONTINUED WITH NO DECREASE, BORESCOPES WERE USED TO DETECT.Jan 29, 1998 · N92311 · Cessna 182NSDR 98ZZZX4493Lifters · pittedDURING A ROUTINE COMPRESSION CHECK, THE NR 2 CYLINDER EXHAUST VALVE WAS FOUND LEAKING. AFTER THE CYLINDER WAS REMOVED, ALL CAM LIFTERS FOUND PITTED AND THE NR 5 CYLINDER INTAKE CAM LOBE FOUND SCOURED. THE ENGINE REMOVED FROM SERVICE. SUBMITTER SUGGESTED POSJan 28, 1998 · N954CC · Cessna 182QSDR 98ZZZX909Crankshaft · failedPILOT (OWNER) DEPARTING FROM AIRPORT AND CLIMBING THROUGH 4,000 FEET NOTED LOUD BANG AND SEVERE VIBRATION FROM LT ENGINE. ENGINE SHUT DOWN AND SECURED AND SAFE LANDING MADE. DISASSEMBLY OF ENGINE REVEALED CRANKSHAFT BROKEN. BREAK OCCURRED AT THE REAR CHEEK Jan 24, 1998 · Piper PA60601PSDR 98ZZZX773Crankshaft · failedPILOT (OWNER) DEPARTING FROM AIRPORT AND CLIMBING THROUGH 4,000 FEET NOTED LOUD BANG AND SEVERE VIBRATION FROM LT ENGINE. ENGINE SHUT DOWN AND SECURED AND SAFE LANDING MADE. DISASSEMBLY OF ENGINE REVEALED CRANKSHAFT BROKEN. BREAK OCCURRED AT THE REAR CHEEK Jan 24, 1998 · Piper PA60601PSDR AU980047Crankcase · cracked(AUS) CRANKCASE CRACKED AROUND OIL FILLER TUBE LOCATING HOLE. CAMSHAF TLOBE WORN.Jan 20, 1998SDR 98ZZZX523Lifter · spalledNR 4 CYLINDER EXHAUST LIFTER SPALLED SEVERELY CAUSING DAMAGE TO THE CAMSHAFT LOBE. ALL OTHER LIFTERS LOOKED GOOD. ENGINE WAS FACTORY OVERHAULED 7/97. FOUND METAL IN SCREEN AND FILTER LEADING TO INVESTIGATION WHICH TURNED UP THIS PROBLEM.Jan 20, 1998 · N6805L · Piper PA31PSDR AU980037Crankcase · cracked(AUS) CRANKCASE CRACKED IN AREA OF NO5 CYLINDER STUD. CRACK LENGTH APPROXIMATELY 30MM (1.18IN). INCORRECT NUT ALSO FOUND ON STUD.Jan 19, 1998 · Cessna 404CESSNASDR 99ZZZX957Crankcase · crackedWHILE REPAIRING AN UNRELATED ITEM, THE MECHANIC NOTICED A CRACK APPROXIMATELY ONE INCH LONG (RUNNING TOP TO BOTTOM) ASSOCIATED WITH THE MOST FORWARD UPPER THROUGH-STUD ON THE NR 4 CYLINDER. THE CASE WAS INSPECTED IAW TCM SB M90-17 AND DETERMINED TO BE UNAIRWOJan 18, 1998 · N29MM · Cessna 402BSDR 98ZZZX486Engine · seizedENGINE SEIZED IN-FLIGHT. SERVICE CENTER THAT REPAIRED ENGINE SAID COUNTERWEIGHT CAME OFF REAR OF CRANKSHAFT. SERVICE CENTER ALSO SAID THEY BELIEVE THAT COUNTEWEIGHT CAME OFF DUE TO THE WAY REVOLUTION INSTALLS BEARING ON END OF CLUTCH. IT IS HELD STATIONARY Jan 16, 1998 · N120VT · Amtr MINI500SDR AU980036Crankcase · holed(AUS) ENGINE FAULTY. THE FOLLOWING DEFECTS WERE FOUND DURING BULK STRIP:- 1. CRANKSHAFT CRACKED 2. CAMSHAFT LOBES DAMAGED 3. CRANKCASE HOLED. 4. CONNECTING RODS (6OFF) BADLY SCORED. 5. OIL PUMP BODY BADLY SCOREDJan 15, 1998SDR 98ZZZX554Stud · failedNR 5 CYLINDER THROUGH-STUD BROKE CAUSING STUDS 56-15 TO BREAK. CYLINDER BECAME LOOSE. ENGINE RAN ROUGH. ENGINE SHUT DOWN AND SAFE LANDING MADE. SUBMITTER SUGGESTED A POSSIBLE CAUSE AS OVERTORQUE OF CYLINDER HOLD-DOWN STUDS.Jan 14, 1998 · N23KM · Gulstm 500BSDR AU980046Connecting Rod · broken(AUS) ENGINE MASTER CONNECTING ROD FAILED.Jan 9, 1998 · Yaklev YAK52SDR 98ZZZX222Crankshaft · failedAIRCRAFT TOOK OFF FROM HANSCOM AND LANDED AT NANTUCKET WITHOUT INCIDENT. PILOT GOT BACK INTO AIRCRAFT AND TAXIED TO THE RUNWAY. DURING TAKEOFF ROLL, PILOT HEARD A LOUD KNOCKING SOUND AND ABORTED TAKEOFF AND TAXIED BACK TO HANGAR. AFTER PULLING ALL THE CYLINDec 31, 1997 · N2838D · Piper PA28161SDR 98ZZZX2616Crankshaft · failedENGINE SHUT DOWN DURING FLIGHT FROM HOUSTON TO DALLAS. UPON TEAR DOWN, DISCOVERED THAT THE CRANKSHAFT HAD BROKEN. SUBMITTER STATED CAUSE IS UNKNOWN PENDING FURTHER INVESTIGATION.Dec 30, 1997 · N3378Q · Cessna 402BSDR CA971231022Camshaft · worn(CAN) ENGINE CAMSHAFT FOUND WORN. ENGINE CAMSHAFT REPLACED.Dec 29, 1997 · Piper PA22108SDR AU971632Crankshaft · cracked(AUS) ENGINE CRANKSHAFT CRACKED. FOUND DURING ULTRASONIC INSPECTION IAW AD/DHE/18A4.Dec 29, 1997 · Dhavxx DH82AROBRTSNSDR 98ZZZX138Bolt · failedDURING ROUTINE 50-HOUR EXHAUST SYSTEM INSPECTION, NOTED BOLT AT RIGHT SIDE FORWARD LOWER CRANKCASE JUST ABOVE OIL PAN STICKING OUT AND TOUCHING EXHAUST CROSS-OVER TUBE. REMOVED TUBE, FOUND HEAD OF BOLT POPPED OFF. BOLT HEAD OR WASHER PN 401507 COULD NOT BE LDec 23, 1997 · N869CB · Cessna 421BSDR 98ZZZX136Stud · shearedNOTICED BASE NUT AND PART OF STUD MISSING ON TOP REAR STUD LOCATION OF NR 1 CYLINDER. NUT HAD COME OFF OTHER END OF STUD. STUD HAD FAILED AT CYLINDER BASE FLANGE. ENGINE OVERHAULED BY MATTITUCK 1,267 HOURS PREVIOUSLY. UNKNOWN IF STUD WAS NEW THEN. (PART IDec 22, 1997 · N2159S · Piper PA34200TSDR 98ZZZX2609Bolt · failedAPPEARS THAT THE CONNECTING ROD BOLT FAILED ALLOWING THE CONNECTING ROD TO SEPARATE FROM THE CRANKSHAFT. THE CONNECTING ROD SEPARATED FROM THE CRANKSHAFT SOON AFTER TAKEOFF. OIL COVERED THE WINDSHIELD AND SMOKE FILLED THE COCKPIT. A SUCCESSFUL LANDING WAS MDec 17, 1997 · N21018 · Piper PA32RT300TSDR 99ZZZX576Journal · cloggedTWO OIL JOURNALS IN CRANKCASE CLOGGED CAUSING TWO PISTONS TO FREEZE AND FAIL. ON LEFT SIDE OF CRANKCASE THE PISTON BROKE THROUGH CAUSING A FIST SIZE HOLE ON THE RIGHT SIDE OF THE PISTON BROKE THROUGH CAUSING A SILVER DOLLAR SIZE HOLE.Dec 16, 1997 · N707DM · Cessna 421BSDR 98ZZZX184Roller · spalledAT THE TIME OF ROUTINE MAINTENANCE, METAL WAS DISCOVERED IN THE OIL SCREEN AND FILTER AND ALSO THE CHIP DETECTOR LIGHT CAME ON. UPON INSPECTION, FOUND THE VALVE TAPPET ROLLERS SPALLING.Dec 16, 1997 · Scwzer G164BSDR AU971638Crankcase · cracked(AUS) CRANKCASE CRACKED. FOUND DURING INSPECTION IAW TCM CSB 97-9.Dec 12, 1997 · Cessna 404CESSNASDR 98ZZZX4Crankshaft · defectiveCRANKSHAFT'S FIRST FILLET AREA CLOSEST TO FLANGE HAD A 59 PERCENT FSH INDICATION.Dec 11, 1997SDR 98ZZZX362Crankshaft · crackedCRANKSHAFT'S FIRST FILLET AREA CLOSEST TO FLANGE HAD A 50 PERCENT FSH INDICATION.Dec 11, 1997SDR 98ZZZX19Bearing · failedENGINE RPM FLUCTUATING IN-FLIGHT. PRECAUTIONARY ENGINE SHUT DOWN AND FEATHERING ACCOMPLISHED. AIRCRAFT LANDED WITHOUT INCIDENT. INVESTIGATION DISCLOSED THE STARTER ADAPTER FAILED DUE TO LACK OF OIL. THIS OCCURRED AFTER .5 HOURS OF OPERATION. DISASSEMBLY OFDec 8, 1997 · N87SC · Beech 95C55SDR 98ZZZX38Bolts · looseOIL SUMP QUICK DRAIN WOULD NOT OPEN. REMOVED QUICK DRAIN TO TROUBLESHOOT AND FOUND LOOSE BOLT LAYING ACROSS DRAIN HOLE IN OIL PAN. REMOVED OIL PAN AND FOUND 3 EACH .25 INCH FLANGE BOLTS AND 1 EACH .3125 INCH THROUGH-BOLT LYING IN PAN ALONG WITH NUTS AND WASHDec 5, 1997 · N8262D · Lkheed T33ASDR 98ZZZX313Crankshaft · crackedINSPECTION FOUND CRANKSHAFT PROPELLER FLANGE CRACKED BETWEEN HOLES IN TWO PLACES.Dec 2, 1997 · N9504K · Univar 1082SDR AU971547Crankshaft · broken(AUS) ENGINE CRANKSHAFT BROKEN.Nov 27, 1997 · Beech A36SDR CA971208005Crankshaft · bent(CAN) VIBRATION NOTICED DURING PRODUCTION TEST FLIGHT. GEARBOX REMOVED TO INVESTIGATE. RUN OUT OF CRANKSHAFT AT P.T.O. (POWER TAKEOFF END) CHECKED IN ACCORDANCE WITH ROTAX F3 MAINTENANCE MANUAL, MEASURED AT.003. REQUIREMENTS NEW ARE 0.00 + 0.03 (MM)/0.00 + Nov 25, 1997SDR 98ZZZX929Crankshaft · crackedPART REMOVED FROM INVENTORY AS PRECAUTION. THE CRANKSHAFT WAS RECENTLY SERVICED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII. PART IS SCRAP. NELSON W.O. 1 533.Nov 25, 1997SDR 98ZZZX772Crankshaft · crackedPART WAS REMOVED FROM INVENTORY AS PRECAUTION. THE CRANKSHAFT WAS RECENTLY SERVICED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII. PART IS SCRAP.Nov 25, 1997SDR 97ZZZX5181Roller · spalledVALVE TRAIN ROLLER FOUND SPALLED. WHILE PERFORMING MAINTENANCE AND REPAIRS ON THE ENGINE.Nov 24, 1997SDR 97ZZZX5180Cam · spalledVALVE TRAIN ROLLER AND CAM SPALLED. DISCOVERED WHILE PERFORMING REPAIR TO THE ENGINE. BOTH THE CAM AND ROLLER WERE FAILING BY SPALLING.Nov 21, 1997SDR 97ZZZX5179Roller · spalledVALVE TRAIN ROLLER AND CAM SPALLED. DISCOVERED WHILE PERFORMING REPAIR TO THE ENGINE. BOTH THE CAM AND ROLLER WERE FAILING BY SPALLING.Nov 21, 1997SDR AU971455Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED. INVESTIGATION FOLLOWING ENGINE STRIP FOUND TWO DAMAGED CAM FOLLOWERS.Nov 17, 1997 · Piper PA31350SDR 97ZZZX5184Cam · spalledVALVE TRAIN ROLLER AND CAM SPALLED. DISCOVERED WHILE PERFORMING REPAIRS AND MAINTENANCE TO THE ENGINE FOR OTHER REASONS. PARTS WERE FOUND SPALLING AND FLAKING.Nov 17, 1997SDR 97ZZZX5183Roller · spalledVALVE TRAIN ROLLER AND CAM SPALLED. DISCOVERED WHILE PERFORMING REPAIRS AND MAINTENANCE TO THE ENGINE FOR OTHER REASONS. PARTS WERE FOUND SPALLING AND FLAKING.Nov 17, 1997SDR 97ZZZX5143Bolt · failedAIRCRAFT WAS AT CRUISE POWER SETTING. THE PILOT EXPERIENCED A ROUGH RUNNING ENGINE. HE SECURED THE ENGINE AND CONTINUED TO LAND WITHOUT FURTHER INCIDENT. UPON INSPECTION OF THE ENGINE, DETERMINED THE CONNECTING ROD BOLT FAILED ON THE NR 5 CYLINDER AND THE CNov 13, 1997 · N31P · Gulstm 680FLSDR 98ZZZX1345Stud · failedENGINE SHUT DOWN DUE ROUGH RUNNING. CYLINDER HOLD-DOWN STUDS FOUND TO HAVE FAILED ON ONE CYLINDER. AD 56-06-02 APPLIES TO THIS ITEM.Nov 11, 1997 · N941AT · Doug DC3CSDR AU971536Bolt · broken(AUS) LH NO6 CYLINDER UPPER THROUGH BOLT BROKEN IN LINE WITH THECYLINDER BASE FLANGE.Nov 3, 1997 · Beech 95C55SDR 97ZZZX4891Connecting Rod · failedPILOT REPORTED NR 2 ENGINE BEGAN RUNNING ROUGH, THEN FAILED TOTALLY. SUCCESSFUL SINGLE ENGINE LANDING AT SUS. REMOVED COWLING, FOUND NR 6 CYLINDER CONNECTING ROD FAILED WHICH PENETRATED CRANKCASE DESTROYING ENGINE.Nov 3, 1997 · N747PB · Cessna 414ASDR CA971208001Crankcase · cracked(CAN) DURING INSPECTION, OIL WAS NOTICED AT LOWER SIDE OF NR 2 AND NR 4 CYLINDERS, ENGINE WAS WASHED DOWN AND A GROUND RUN-UP WAS CARRIED OUT. AN OIL LEAK WAS FOUND AT THE NR 2 CYLINDER DRAIN TUBE/LINE. LINE WAS REPLACED AND GROUND RUN WAS CARRIED OUT SERVICENov 2, 1997 · Cessna 172MSDR 97ZZZX4870Crankcase · crackedDURING TROUBLESHOOTING OF OIL LEAK, A CRACK IN THE ENGINE CASE WAS DISCOVERED. CRACK RUNS FROM LIFTER OIL GALLEY 1 INCH FORWARD OF AND ABOVE NR 2 CYLINDER BOSS TO 9 O'CLOCK POSITION ON CYLINDER BOSS HOLE. A SECOND CRACK INSIDE THE CASE PARALLELS THE OUTER CANov 1, 1997 · N3525B · Piper PA31350SDR AU971384Crankcase · cracked(AUS) ENGINE LH CRANKCASE HALF CRACKED IN AREA OF NO3 BEARING SADDLE.Oct 31, 1997SDR CA971110003Crankcase · cracked(CAN) PILOT REPORTED NR 1 ENGINE WAS RUNNING ROUGH. MAINTENANCE FOUND OIL LEAKS AND EVIDENCE OF COMBUSTION DETONATION AT NR 1 CYLINDER. FURTHER INSPECTION FOUND NR 36 STUD WAS PULLED OUT OF THE CRANKCASE THREADS. THE NR 1 CYLINDER BORE IN THE CRANKCASE WAS Oct 30, 1997 · Cessna 421CSDR AU971375Crankcase · faulty(AUS) CRANKCASE TUNNEL MEASUREMENTS OUT OF LIMITS.Oct 24, 1997SDR 97ZZZX4726Connecting Rod · failedENGINE HAD A CATASTROPHIC FAILURE 10 MINUTES AFTER TAKEOFF. A SUCCESSFUL EMERGENCY LANDING WAS MADE IN A HAY FIELD. PILOT AND PASSENGER WERE NOT INJURED, AIRCRAFT WAS SUBSTANTIALLY DAMAGED. THE NR 2 CONNECTING ROD CREATED FOUR HOLES IN THE ENGINE CASE AND TOct 21, 1997 · N2200J · Piper PA32RT300
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