JASC 8520
Service difficulty reports · 2,213
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.
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
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 2005FA0000163Tappet · missingON ANNUAL 100 HR INSP, OIL STRAINER CLEANED, METAL PIECE FOUND IN STRAINER, METAL PIECE SENT TO MFG FOR ANALYSIS, REPORT INDICATED. PIECE FROM TAPPET BODY. CYCLE REDUCED, INSP OF TAPPPET BODIES, FOUND NIS INLET, BODY WITH PIECE MISSING FROM SURFACE, PROBABLESDR CA041101004Crankcase · crackedTHE ENGINE HAD AN OIL LEAK AT THE LT FRONT OF THE CRANKCASE. IT WAS CLEANED. A CLOSE CHECK FOUND TWO CRACKS LEAVING OIL. THE ENGINE WAS REMOVED AND SENT OUT FOR REPAIRS.SDR 2004FA0000807Exhaust Valve · burnedEXHAUST VALVE LEAKAGE ON COMPRESSION CHECK. BURNED VALVE VERIFIED BORESCOPE INSPECTION. VALVE STEM AND GUIDE WORN BEYOND SERVICE LIMITS.SDR 2008F00023Pushrod · failedENGINE HAD MANIFOLD AND FUEL PRESSURE VARIATION IN FLT, THE ACFT BEGAN TO VIBRATE AND THE PILOT SHUTDOWN ENGINE. THE NR 1 AND NR 2 ROD`S FAILED AND SEPARATED FROM THE CRANKSHAFT AND CREATED (2) LARGE HOLES IN THE CASE AND KNOCKING BOTH MAGNETOS LOOSE. THERE ASDR CA050308015Crankcase · failed(CAN) CRANKCASE FAILURE (7TH STUD CRANKCASE) AS RESULT OF A RECENT FAILURE. DURING CHANGE ON CYL NR1, SPECIAL ATTENTION WAS PAID TO NR2, NR3 INTERMEDIATE BRG SADDLE. INSP CONCLUDED THAT MOVEMENT OF BRGS HAD OCCURRED, TEARDOWN OF ENG WOULD BE REQUIRED FOR INSDR VIB2004F00000Camshaft · spalledFOLLOWING REMOVAL OF CYLINDERS FOR REPLACEMENT DUE TO LOW COMPRESSION, LIFTERS WERE REMOVED FOR INSPECTION. FOUND NR 1 CYL EXHAUST LIFTER BADLY PITTED AND SPALLED ON PTCE AND CHIPPED ON EDGES. DAMAGE TO CAMSHAFT OCCURRED AS A RESULT. ENGINE REMOVAL FOR REPASDR HN8R200400001Connecting Rod · bentDURING DIFFERENTIAL COMPRESSION CHECK FOUND NR 6 CYLINDER 20/80. REMOVED CYLINDER AND DISCOVERED THE CONNECTING ROD BENT. REPLACED THE ENGINE.SDR CA041005001Cam · damaged(CAN) THE ENGINE DEVELOPED A NOISE INDICATING A WORN CAM LOBE OR ROLLER. SMALL AMOUNT OF METAL (STEEL ) FOUND IN ENGINE SUMP. TRACE AMOUNT OF METAL FOUND IN OIL SCREEN. CAM REMOVED AND FOUND TO BE DAMAGED ON ONE EXHAUST LOBE. INSTALLED NEW CAM AND ROLLERS OSDR CA041004002Crankcase · cracked(CAN) RT CRANKCASE IS CRACKED AT THE ALTERNATOR TENSIONING ARM ATTACHMENT BOSS. CRACK APPROX .5 IN LONG BEGINS AT THE BOLT HOLE WHERE TENSIONING ARM ATTACHES TO CRANKCASE AND EXTENDS IN AN AFT DIRECTION. ENGINE REMOVED FOR REPAIR.SDR 4022Crankshaft · failedPILOT WAS IN CRUISE, LEFT ENGINE HAD VIBRATION AND UNCOMMANDED SHUT DOWN. PILOT LANDED AT PHD. VISUAL INSPECTION REVEALED CRANKCASE DAMAGE / CRANKSHAFT HAD FAILED. REASON UNKNOWN AT THIS TIME. REPLACED ENGINE WITH NEW.SDR CA040928005Impeller · failed(CAN) DURING CLIMB THE ENGINE LOST POWER AND HAD MAJOR OIL LEAKAGE. THE AIRCRAFT LANDED WITHOUT INCIDENT AND WAS RETURNED TO DOCK. INSPECTION FOUND THAT THE IMPELLER ASSY HAD FAILED RESULTING IN ENGINE POWER LOSS AND OIL LEAKAGE. ENGINE REMOVED AND IS TO BE SESDR 2005FA0000121Bearing · failedRT REAR MAIN BEARING BEGAN TO SHRED METAL INTO OIL FILTER AFTER LANDING. OIL CHANGE AND FILTER CUT OPEN. THIS WAS FOUND ON A PRE-BUY. LETTER TO FAA SENT SEPT 03, 2005, BUT NO REPLY. (K)SDR CA040830013Crankcase · unserviceable(CAN) CRANKCASE FAILURE (7TH STUD CRANKCASE) INSP WAS CARRIED OUT. CYLS NR1, NR3 WERE REMOVED SO NR2, NR3 INTERMEDIATE BRG SADDLE COULD BE VIEWED. MOVEMENT OF BRGS HAD OCCURRED, TEAR DOWN WOULD BE REQUIRED FOR FURTHER INVEST. IT WAS FOUND THAT THERE WAS FRESDR 20040823Camshaft · making metalAFTER ENGINE O/H, THE ENGINE WAS TEST RUN 5 HOURS ON THE TEST STAND AND THEN DISASSEMBLED BECAUSE OF METAL IN OIL. AS PART OF INSPECTION NOTED THAT NR 4 EXHAUST CAM LOBE APPEARED TO BE WEARING ABNORMALLY. HAS A ROUGH SURFACE WITH SOME PITTING AND APPEARANCE SDR 2004FA0000650Connecting Rod · brokenNR 3 CYLINDER CONNECTING ROD BROKE DURING TAKE OFF CAUSING ENGINE DAMAGE. GIPSY MAJOR 1C ENGINE MODEL INSTALLED IN A VINTAGE EXPERIMENTAL EXHIBITION AIRCRAFT.SDR CA040830012Piston · cracked(CAN) WHEN CARRYING OUT COMPRESSION TEST #3 CYLINDER WAS FOUND TO HAVE LOW COMPRESSION. #3 CYLINDER WAS REMOVED AND PISTON WAS FOUND CRACKED. SERVICEABLE PISTON AND CYLINDER WERE INSTALLED AND AIRCRAFT RETURNED TO SERVICE.SDR 20040816Bearing · flakingASSEMBLED THE ENGINE ACCORDING TO THE LYCOMING OVERHAUL MANUAL AND STANDARD PRACTICES. THE ENGINE WAS PREOILED AND RUN IN A TEST STAND USING AEROSHELL 100W OIL. AFTER A TWO HOUR BREAK-IN RUN WHERE ALL TEMPS AND PRESSURES WERE NORMAL THE OIL FILTER WAS CUT OPSDR CA040819007Crankcase · failedA/C ENG CRANKCASE FAILURE AS A RESULT OF A RECENT FAILURE DESCRIBED IN SDR CA040806006 SUBMITTED 08/6/2004, A VOLUNTARY INSPECTION CARRIED OUT BY OPERATOR AT REQUEST OF OVERHAUL FACILITY. CYLINDERS NR 1 & 3 REMOVED SO THAT NR 2 & 3 INTERMEDIATE BEARING SADDLE SDR 2004FA0000787Valve Guide · wornON DOING A COMPRESSION CHECK, 3 OUT OF 6 CYLINDERS HAD VALVES LEAKING. WHEN REMOVED FOR REPAIR, DISCOVERED GUIDES WORN BEYOND MAX SERVICE LIMIT. (NM09200412745)SDR ONQ2004F00000Crankshaft · brokenCRANKSHAFT BROKE IN HALF. CRACK WAS LATERAL ACROSS THE THROW IN FRONT OF THE MIDDLE JOURNAL AND BEHIND THE NR 1 AND NR 2 CRANK PIN. CRACKSHAFT MARKINGS W5340 BS N50. ENGRAVED ON END R19119-1 AND S91660-1. LOWER END OVERHAULED, CASE INSPECTED AND CONDEMNED SDR D942004F00000Rocker · brokenON TAKEOFF ROLL PILOT LOST POWER TO THE LT ENGINE. INVESTIGATION REVEALED THAT THE NR 5 CYLINDER EXHAUST VALVE ROCKER ARM WAS BROKEN. ADDITIONAL INSPECTION REVEALED DAMAGE TO THE NR 5 PUSH ROD AND HOUSING, AND THE HYDRAULIC LIFTER ASSY. ENGINE WAS MANUFACTUSDR VA12004F00000Crankshaft · brokenCRANKSHAFT HAD BEEN ULTRASONIC INSPECTED IAW APPLICABLE CSB 99-6A DURING OVERHAUL. RETURNED TO SERVICE AND AFTER 141.1 HOURS, FAILED IN SAME GENERAL OF REQUIRE INSPECTIONS. BROKEN AT NR 3 MAIN JOURNAL TO NR 5 ROD THROW.SDR 2004FA0000880Crankcase · damagedWHILE CLIMBING OUT FROM RAWLINS, WY ON A FLIGHT TO HOLLISTER, CA., THE ENGINE STARTED TO RUN ROUGH AND THE PILOT NOTICED THAT THE OIL TEMPERATURE WAS RED LINED. THE PILOT RETURNED TO THE AIRPORT FOR EMERGENCY LANDING UNDER PARTIAL ENGINE POWER. THE AIRCRAFT SDR CA040806006Saddle · failedCRANKCASE FAILURE (7TH STUD CRANKCASE) CRANKCASE FRETTING ON NR 2 & 3 INTERMEDIATE BEARING SADDLE THRU-BOLT PADS. THE OIL SUPPLY TO THE NR 2 CONNECTING ROD JOURNAL WAS EITHER CUT OFF COMPLETELY OR DRASTICALLY REDUCED CAUSING OIL STARVATION TO THE CONNECTING ROSDR 2004FA0000797Valve · brokenWITHIN THE LAST 3 TO 3.5 HOURS OF FLIGHT, THE PILOT NOTED THE ENGINES WERE RUNNING ROUGH AND FLEW TO OUR FACILITY FOR DISCOVERED THAT THE INTAKE VALVE KEEPER KEYS WERE BROKEN, THE NR 6 CYLINDER HAD A STUCK EXHAUST VALVE. THE PILOT REPORTED HAVE THE NR 6 CYLINSDR CA040806004Bolt · failed(CAN) THE PILOT DEPARTED AIRPORT: AT 2100 FT AND 4 MILES SOUTH OF DEPARTED AIRPORT, ENGINE STARTED TO RUN ROUGH, PARTIAL POWER LOSS. THE PILOT LANDED AT SAME AIRPORT WITHOUT ANY DIFFICULTY. UPON INVESTIGATION OF ENGINE, FOUND THAT THE CONNECTING ROD BOLTS P/N SDR 2004FA0000675Crankshaft · brokenTSIO-520-T CRANKSHAFT BROKE AT 1776 HOURS SINCE FACTORY REMANUFACTURE. OPERATED BEYOND RECOMMENDED OVERHAUL, CRANK FAILED CAUSING UNSCHEDULED LANDING THAT RESULTED IN AN AIRCRAFT ACCIDENT.SDR 2004FA0000756Gear · failedTHIS ENGINE HAD A COMPLETE FAILURE IN FLIGHT, PILOT WAS ABLE TO GLIDE TO AIRPORT. INITIAL INSPECTION FOUND DAMAGE TO CRANKSHAFT AND CAMSHAFT DRIVE GEARS INSIDE ACCESSORY GEARBOX. INSPECTION WAS NOT COMPLETE TO FIND OUT WHY THIS HAPPENED, DUE TO THE TIME AND SDR CA050125015Piston · disintegrated(CAN) ENGINE HAD 450 HOURS SINCE TOTAL O/H, WAS PERFORMING NORMAL. CYL LEAK TEST WERE MIN. 60/80 AND OIL CONSUMPTION WAS 1 LT-13 HRS. AC WAS IN BASE LEG WITH POWER REDUCED GRADUALLY BACK TO 20 IN., PROP NEAR FINE, MIXTURE NEAR RICH. VIBRATION STARTED IN ENGSDR CA040721003Piston · brokenPILOT EXPERIENCED PARTIAL POWER INTERUPTION ON TAKEOFF. ABORTED TAKEOFF. BORESCOPE INSPECTION DISCOVERED BROKEN PISTON IN NR 1 CYLINDER. PISTON REPLACED WITH OVERHAULED ASSEMBLY AND ENGINE RE-ASSEMBLED AND TESTED SERVICEABLE.SDR 2004FA0000775Crankcase · crackedCRANK IN CRANKCASE JUST BELOW CYLINDER NR 3 BETWEEN THE BOTTOM CYLINDER HOLD DOWN STUDS AND ROCKER DRAIN NIPPLES. CRACK IS APPROX 2.5 INCHES LONG. (AL03200418212)SDR 2005FA0000166Crankshaft · crackedCRANKSHAFT CRACKEDSDR CA040825007Crankshaft · out of adjust(CAN) ON ENGINE RUNUP, AFTER ENGINE OVERHAUL, THE OIL PRESSURE WAS NOTED TO BE BELOW THE PRESCRIBED LIMIT. ENGINE WAS DISASSEMBLED. THE CRANKSHAFT MAIN JOURNALS WERE NOTED TO HAVE BEEN PREVIOUSLY GROUND TO .010.SDR Q532004F00000Connecting Rod · bentROUGH RUNNING ENGINE, PULLED NR 4 CYLINDER FOUND CONNECTING ROD HAD SLIGHT BEND. CAM SHAFT LOBES FORWARD OF CYL 4, WORN OUT.SDR CA040630002Crankcase · cracked(CAN) DURING UNSCHEDULED MAINTENANCE 3 CRACKS WERE NOTICED ON CRANKSHAFT NEAR PROP FLANGE. TWO CRACKS WERE APPROXIMATELY 2 INCHES IN LENGTH PARALLEL TO EACH OTHER WITH SMALLER CRACKS EXTENDING. ONE CRACK IS ALSO APPROXIMATELY 2 INCHES IN LENGTH AND ABOUT 1 INCSDR CA040629010Main Bearing · failed(CAN) WHILE CLIMBING AWAY FROM A WATER SCOOP, THE CREW NOTICED THAT THE RT ENGINE WAS BECOMING UNCONTROLLABLE, ROUGH RUNNING AND LOSING POWER. THE CREW DROPPED THE LOAD AND SHUTDOWN THE RT ENGINE AND FEATHERED THE PROPELLER. THE AIRCRAFT MADE THE SINGLE ENGISDR D4O2004F00000Nut · looseENGINE SUFFERED CATASTROPHIC FAILURE. AT ENGINE TEARDOWN, THE NR 6 PISTON (FRAGMENTED), PISTON RINGS, CONNECTING ROD, ROD CAP, BEARINGS, ROD BOLTS, AND NUTS WERE FOUND IN THE OIL SUMP. ONE ROD BOLT WAS BROKEN AND ITS NUT WAS ON IT. THE OTHER ROD BOLT WAS NOSDR 040624Crankcase · crackedIT HAD PROP STRIKE WHICH IS WHEN THE DAMAGE PROBABLY OCCURRED. OVERHAULED AND RAN FULL LIFE BUT OIL LEAKS DEVELOPED AT THE MOST FORWARD THROUGH BOLTS. BECAUSE OF THE OIL LEAK AT BOLT HOLE DURING RUNUP AFTER OVERHAUL THAT WAS JUST COMPLETED. CRACK IS IN FRONTSDR CA040831012Tappet · cracked(CAN) HEAD OF CAM FOLLOWER (TAPPET BODY) CRACKED OFF AND FELL INTO SUMP. VALVE COULD NOT ACTIVATE, SO LOST POWER FROM THAT CYLINDER. ON ENGINE TEAR DOWN, 3 OTHER FOLLOWERS WERE FOUND PARTIALLY CRACKED OR PIECES MISSING.SDR CA040629008Plug · worn(CAN) A FEW PIECES OF NON-FERROUS MATERIAL WERE FOUND AT 1375.8 HOURS. FILTER RE-INSPECT SCHEDULED. SUBSEQUENT FILTER INSPECTION SHOWED HEAVY CONTAMINATION. ALL CYLINDERS REMOVED, FOUND PISTON PINS AND PLUGS NOT FLOATING. TWO PLUGS WERE WORN EXTENSIVELY. SDR 2004FA0000668Bolt · crackedTHE CRANKSHAFT THRU BOLT APPEARS TO HAVE FRACTURED IN THE AREA JUST BELOW THE THREADS IN THE NECKED DOWN AREA. THE HEAD OF THE COTTER PIN THAT SAFETY LOCKS THE BOLT WAS FOUND IN THE OIL SUMP. THE ENGINE WAS THEN REMOVED AND DISASSEMBLED. UNKNOWN PROBABLE CASDR 4014Case · damagedWHILE IN CRUISE FROM BHM TO PFN PILOT NOTICED OIL PRESSURE DROPPING, DECLARED AN EMERGENCY AND LANDED AT DHN. ON THE GROUND MAINT FOUND A HOLE IN CASE, LEFT SIDE CASE NR 3 ROD, CAUSE UNKNOWN AT THIS TIME.SDR CA040730005Crankcase · cracked(CAN) ENGINE OIL LEAK DETECTED ON REAR ENGINE SUCTION INSPECTED FOUND 1.5 INCH LONG CRACK IN CASE BETWEEN NR 3 AND NR 5 CYLINDER. NO OTHER REPORTED DAMAGE. ENGINE REMOVED.SDR CA040601004Gear · brokenRIGHT ENGINE STOP DURING FLIGHT. FOUND SPRING PIN OF CRANKSHAFT GEAR BROKEN. WHEN THE CRANKSHAFT WAS REMOVED, THE CHANKSHAFT BOLT SHEARED AND BROKE EASILY. THIS BOLT IS SUBJECT TO AD 2002-23-06AND AD 2004-04-25C. THE NEW BOLT KIT WAS REPLACED (MARCH 18, 200SDR CA040604002Piston · broken(CAN) DURING NR 1 INSP, A SIG AMOUNT OF NON-FERROUS METAL WAS FOUND IN OIL FILTER ELEMENT. OIL SUCTION SCREEN WAS PULLED AND WAS FOUND TO BE FULL OF NON-FERROUS METAL. CYL NR 1 WAS PULLED AND FWD PISTON PIN PLUG WAS FOUND TO BE WORN COMPLETELY ALLOWING PISTOSDR 2004FA0000784Crankshaft · crackedAC WAS ON FERRY FLIGHT, PILOT REPORTED GETTING OIL ON WINDSHIELD. OIL BEGAN TO GET WORSE; REDUCED POWER, AC STARTED VIBRATING SEVERELY. POWER WAS REDUCED FURTHER AND VIBRATION ALSO REDUCED. PILOT LANDED AC IN UNPLANTED FIELD. AC SKIPPED OVER TERRACE AS SLOSDR AUS20040369Engine · making metal(AUS) LT ENGINE METAL CONTAMINATION. METAL PARTICLES IN FILTER WERE NON-FERROUS FLAKES WITH THE LARGEST FLAKES APPROXIMATELY 6MM BY 4MM (0.236IN BY 0.157IN). SUSPECT BEARING MATERIAL.SDR 2004FA0000369Main Bearing · separatedAFT THRUST FACES OF BOTH FRONT MAIN BEARING HALVES WERE SEPARATED FROM BEARING. THIS IS A ONE PIECE STYLE THRUST/MAIN BEARING. PROBLEM FOUND DURING OVERHAUL, NO INDICATIONS OF FAILURE NOTED BEFORE DISASSEMBLY. NO DAMAGE TO CASE OR CRANKSHAFT.SDR HYI2004F00002Gear · failedUPON START, RT ENGINE FAILED TO TURN. MECHANIC FOUND PROP COULD NOT BE TURNED BY HAND EITHER. LATER INSPECTION FOUND CRANKSHAFT LARGE GEAR MISSING TEETH, AND STARTER ADAPTER MISSING TEETH ON DRIVE GEAR. MECHANIC TO REMOVE AND REPLACE ENGINE.SDR AUS20040499Piston · failed(AUS) PISTON FAILED. SUSPECT FAULTY INJECTOR. LIMITED INFORMATION PROVIDED.
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