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 2010FA0001263Crankshaft · corrodedCRANKSHAFT ID FOR CORROSION. DURING THE REMOVAL OF CRANKSHAFT EXPANSION PLUG STD 1211, CRANKSHAFT INTERNAL URETHABOND 104 WAS FOUND BUBBLED. REMOVED URETHABOND 104 AND FOUND CORROSION PITS THOUGHOUT THE TOP 3.5 INCH SURFACE. ENGINE IS FACTORY O/H, AD98-02-08 SDR HYIA121PBLFTENGConnecting Rod · brokenCREW REPORTED, CLIMBING THROUGH 6300' MSL, LT ENGINE BEGAN TO SHUDDER AND RUN ROUGH, EGT WENT TO ZERO, AND OIL PRESSURE BEGAN DROPPING. SMOKE AND OIL STARTED COMING FROM TOP OF THE ENGINE COWL. CREW SECURED ENGINE AND RETURNED TO BLOCK. LANDING WAS UNEVENTFSDR CA110429001Connecting Rod · broken(CAN) TWO CONNECTING RODS BROKEN. SCRAP CRANKCASE BROKEN. SCRAP CAMSHAFT BROKEN - SCRAP OIL SUMP, SCRAP PISTON BROKEN.SDR 2010FA0001238Piston Ring · brokenOPERATOR COMPLAINED OF ENGINE SURGING 25 RPM OF 2400 RPM. STATED THAT THE NR 4 CYL WAS 70 DEGREES COLDER THAN THE OTHER CYLINDERS. LANDED AND CHECKED OIL. FOUND OIL ON TOP OF THE ENGINE, SUSPECTED TO COME FROM THE SPLIT CASE. FOUND NO DAMAGE TO EXTERIOR OFSDR 2010FA0001213Rod Bolt · loosePILOT EXPERIENCED ENGINE SUDDEN STOPPAGE IN FLIGHT AND MADE UNSCHEDULED LANDING. ANALYSIS OF THE CATASTROPHIC ENGINE FAILURE INDICATED FAILURE OCCURED WHEN THE NR5 CONNECTING ROD SEPARATED. THE CAUSE OF FAILURE OF THE CONNECTING ROD WAS A LOOSE ROD BOLT IN THESDR 2010FA0001199Camshaft · spalledDURING CYLINDER REPLACEMENT DUE TO LOW COMPRESSION FOUND NR3 & NR4 INTAKE LOBE ON CAM WORN AND SPALLING. ENGINE REMOVED FOR CAM REPLACEMENT OR ENGINE O/H. SPALLING OF LIFTER FACES ALSO NOTED.SDR 2010FA0001192Tappet · making metalTHESE TAPPETS WERE SOME OF THE FIRST PRODUCED, UNDER THIS NEW PN. FOUND 8 OF 12 IN THE ENGINE IN DISTRESSED CONDITION AND MAKING METAL. PN 15B26064SDR 2010FA0001200Camshaft · wornMETAL PARTICLES FOUND DURING OIL CHANGE. FURTHER INVESTIGATION FOUND CAMSHAFT LOBES WORN PAST LIMITS AND LIFTER BODIES MISSING SOME METAL. AD 2009-24-52 PREVIOUSLY COMPLIED WITH AND LIFTER 675915 HAD BEEN REPLACED PRIOR TP PRIOR "0" TIME O/H PERFORMED 468.2 SDR HYIA6879RRTENGExhaust Valve · failedCREW REPORTED, DURING INITIAL CLIMB OUT, EXPERIENCED PARTIAL POWER LOSS ON RT ENG, CONSISTENT WITH LOSS OF TURBOCHARGER. CONTINUED CLIMB OUT AT FULL POWER TO CRUISE SETTING AT 7000 FT WHILE DECLARING AN EMERGENCY AND REQUESTING DIVERSION. EXPERIENCED OIL LEAKSDR 2010FA0001168Bolt · backed outENGINE WAS RETURNED FOR HIGH VIBRATION/NOISE. DURING FLIGHT, REPORTED A NOISE AND VIBRATION IN THE CABIN. FIELD TROUBLESHOOTING COULD NOT IDENTIFY THE ISSUE. THE 1E LP VIBRATION WAS MEASURE AT 1.5 -1.75 IPS. UPON RECEIPT IN THE REPAIR STATION THE ENGINE WSDR CA101115020Case · cracked(CAN) MAINTENANCE FOUND ENGINE LEAKING EXCESSIVE OIL. THE AREA WAS INSPECTED AND TWO CRACKS WERE FOUND. A ONE INCH CRACK WAS FOUND BY THE BASE OF THE NR 6 CYLINDER, AND A TWO INCH CRACK WAS FOUND BELOW THE OIL FILLER NECK.SDR 2010FA0001164Camshaft · wornWORN CAMSHAFT (PN 655384, SN 34962) DISCOVERED DURING CYLINDER CHANGE (LOW COMPRESSION) CYLINDERS NR3 & NR4 INTAKE LOBES ONLY. NEW LIFTERS WERE INSTALLED WITH THE NEW CAMSHAFT AT INSTALLATION. INITIATOR STATES THIS HAS BEEN A PROBLEM MORE THAT A FEW TIMES. MFSDR 2010FA0001149Boss · crackedDURING VISUAL INSP OF THE ENGINE DISCOVERED INTERCOOLER AFT MOUNTING BOSS TO BE CRACKED 3/4 OF THE WAY AROUND.SDR ZB0R201000007Case Half · crackedDURING ENGINE TEAR DOWN INSP FOR PROPELLER STRIKE, TECH FOUND LT CASE HALF CRACKED IN 2 PLACES AT THE NR2 CYL OPENING. THE DAMAGE CAN BE TOTALLY ATTRIBUTED TO THE PROP STRIKE. CASE WAS REPLACED WITH AN O/H UNIT.SDR CA101101002Piston · corrodedAFTER REMOVING AN ENGINE CYL TO REPLACE AN EXAUST STUD, IT WAS NOTICED THAT THE PISTON HAD CORROSION ON IT. ALL CYLINDERS WERE REMOVED AND PISTONS INSPECTED. CORROSION WAS FOUND ON ALL PISTONS. THE CYLINDERS WERE REPAIRED AND NEW PISTONS AND RINGS INSTALLED.SDR CA101104003Plug · worn(CAN) FOUND ALUMINUM CONTAMINATION IN OIL SCREEN. FOUND NR 1+2 CYLINDER FORWARD SIDE PISTON PIN PLUGS WORN. FOUND THAT THE LOWER PISTON RING ON BOTH PISTONS CREATED A LIP AT THE BOTTOM OF THE CYLINDER BARREL ONLY ON THE FORWARD WALLS. THE PLUG WOULD THEN SLSDR 2010FA0001154Piston · crackedACFT WAS IN CRUISE FLIGHT AND EXPERIENCED AN ENGINE FAILURE. THE CASE WAS CRACKED ABOVE THE NR5 CYLINDER AND INSP THROUGH THE OIL FILLER TUBE REVEALED TNE NR5 PISTON WAS COMPLETELY DESTROYED. THIS ENGINE WAS O/H 17 YEARS AGO. INSP REVEALED THE ACFT IS CURRESDR 2010FA0001121Tappet · chippedNEW TAPPET BODY WAS CHIPPED AT THE EDGE OF THE TAPPET BODY FACE.SDR 2010FA0001120Tappet · defectiveNEW HYD LIFTER BODY WILL NOT BLEED DOWN OR COLLAPSE TO ALLOW FOR PROPER DRY TAPPET CLEARANCE AT ENGINE O/H.SDR 2010FA0001271Exhaust Valve · failedREDUCED POWER FROM 2900 RPM TO 2600 RPM, ALL ENGINE INSTRUMENTS IN NORMAL RANGE. EXPERIENCED SEVERE ENGINE VIBRATIONS LASTING ABOUT 10 SECONDS RESULTING IN CATASTROPHIC ENGINE FAILURE. DAMAGE CONTAINED WITHIN ENGINE CASE WITH NO LOSS OF OIL OR FUEL. CYLINDSDR 2010FA0001139Bolt · mismanufacturedRECEIVED NEW CONNECTING ROD BOLTS. ON INCOMING INSP FOUND BOLT HEAD TO BE INAPPROPRIATELY MARKED WITH PART NUMBER AND OUTSOURCE MFG. BOLTS ARE STRETCH BOLTS AND HEAD MARKING INTERFERE WITH THE ABILITY TO MEASURE STRETCH AT INSTALLATION.SDR 2010FA0001173Drive Gear · failed(V7AR) DURING CRUISE FLIGHT THE RT ENGINE WENT TO 2700 RPM THEN DROPPED TO 1100 RPM. THE PILOT DID NOT NOTICE ANY OTHER GAGE READINGS. THE ENGINE STOPPED AND THE PILOT WAS UNABLE TO RESTART. THE ACFT LANDED OK. THE ENGINE HAS NOT BEEN INSPECTED. ON TEARDOSDR 2010FA0001247Connecting Rod · brokenNR3 CRANKSHAFT ROD FAILED IN FLIGHT - KNOCKING A HOLE IN THE CRANK CASE. ENGINE REMAINED RUNNING AND PILOT WAS ABLE TO RETURN ACFT TO AIRPORT. ONE QUART OF OIL WAS REMAINING IN THE OIL TANK. PERFORMED A TEAR DOWN INSPECTION AND WAS UNABLE TO COME UP WITH A CSDR CA100831015Main Bearing · failedMAIN CRANKSHAFT BEARING FAILURE.SDR 2010FA0000852Camshaft · corrodedEXCESSIVE CAM LOBE WEAR IS CAUSING POWER LOSS AND EARLY REMOVAL OF SEVERAL OF OUR ENGINES. THIS ENGINE WAS THE EARLIEST REMOVAL SO FAR, WITH 744 HOURS REMAINING UNTIL O/H. HAVE BEEN IN CONTACT WITH MFG TECH SUPPORT FOR AN EXTENDED PERIOD OF TIME NOW AND HAVE YSDR CA100907005Pushrod · bentNR 2 CYL EXHAUST PUSHROD BENT.SDR CA100819013Piston Ring · delaminated(CAN) THE AIRCRAFT WAS IN FOR A INSPECTION AND A HIGHER THAN NORMAL OIL CONSUMPTION WAS NOTED. INVESTIGATION REVEALED THAT NR 1 CYLINDER ASSEMBLY HAD A LEAKAGE OF 60/80 ON A DIFFERENTIAL COMPRESSION CHECK. FURTHER INVESTIGATION REVEALED THAT THE TOP PISTON RSDR 2010FA0001009Crankshaft · failedIN-FLIGHT CATASTROPHIC FAILURE, DURING INITIAL CLIMB, ENGINE RAN ROUGH, QUIT PRODUCING POWER AND STOPPED. ACFT LANDED IN A FIELD. NO DAMAGE INCURRED.SDR CA100820002Connecting Rod · failed(CAN) A PROBLEM WITH CONNECTING ROD ON CYLINDER NR 5 CAUSED AN ENGINE FAILURE DURING DESCENT AFTER PARA-DROP. ENGINE WAS FEATHERED AND AIRPLANE LANDED SAFELY.SDR 2010FA0000845Crankshaft · brokenACFT DEPARTED, SHORTLY AFTER TAKEOFF, THE ENGINE LOST POWER AND THE ACFT MADE AN EMERGENCY LANDING ON HWY 254. NO DAMAGE TO THE ACFT, AND NO INJURIES TO THE OCCUPANTS. TEARDOWN OF THE ENGINE REVEALED THE CRANKSHAFT HAD BROKEN AT THE (4TH) BEARING FROM THE FLSDR 2010FA0000785Camshaft · wornDURING REMOVAL OF CYLINDER ASSEMBLIES FOR TOP O/H, FOUND SEVERAL LIFTERS SPALLED AND EXCESSIVE CAM LOBE WEAR. RECOMMEND THAT AD 2010-11-04 AND TCM MSB098A BE REVISED TO INCLUDE ENGINE MFG EARLIER THAN SPECIFIED IN THE AD. THIS ENGINE WAS BUILT IN 2005.SDR 2010FA0000662Crankshaft · brokenCRANKSHAFT BROKEN IN HALF IN FLIGHT , LARGE HOLE BROKEN IN CASE. NR 4 CYCLE THROWN AFT ABOUT 1 INCH. CYLINDER BASE STUDS STILL ON NR 4 CYL. O/H W/O 31830.SDR CA100622021Crankshaft · crackedON JUNE 20TH 2010 AT APPROXIMATELY 1100 PDT, CHEROKEE C-GCEP DEVELOPED AN OIL LEAK IN FLIGHT, BECOMING FIRST APPARENT TO THE INSTRUCTOR WITH THE APPEARANCE OF A LIQUID SPRAY ON THE WINDSHIELD (INITIALLY THOUGHT TO BE PRECIPITATION). THE INSTRUCTOR LANDED SAFELSDR CA100621005Piston · brokenENGINE WAS DIAGNOSED AND IT WAS DISCOVERED THAT THE NR 14 CYLINDER ASSY AND A BROKEN PISTON CAUSING THE SHAKING AND PRESSURIZATION OF THE POWER SECTION CRANKCASE.SDR 2010FA0000995Piston · broken1.8 HOURS AND ON SECOND FLIGHT AFTER INSTALLATION OF 6 NEW PISTONS PN AEC648029 WITH 6 REWORKED CYLINDER ASSEMBLIES, THE ENG EXPERIENCED A CATASTROPHIC TOTAL ENG FAILURE, MINUTES AFTER TAKEOFF DEPARTURE FROM AIRPORT. POST INCIDENT INVESTIGATION FOUND NR 2 CONSDR 2010FA0000690Spring · broken(WS9R) PUSH ROD RETAINING SPRING BROKE DURING ENGINE TEST CELL RUN. OBSERVED THAT THE PUSH ROD TUBE SEALS BEGAN LEAKING OIL, UPON REMOVAL OF THE ROCKER COVERS, DISCOVERED THAT (3) OUT OF (4) RETAINING SPRINGS WERE BROKEN. VERIFIED THAT THEY WERE INSTALLED COSDR CA100805001Crankcase · crackedDURING A ROUTINE INSP, DISCOVERED A 2.5" CRACK IN THE ENGINE CASE RUNNING FWD FROM NR 5 C4L BASE TO THE FRONT BEARING AREA. THE CRANK WAS ALLOWING ENGINE OIL SEEPAGE AT THE CRACK AREA. THE ENGINE WAS REMOVED FROM SERVICE AND SENT TO O/H.SDR CA100806004Case Half · crackedDURING SCHEDULED INSP, OIL LEAK WAS FOUND ON LT ENGINE CASE. FURTHER INSPECTION REVEALED A 1-INCH CRACK BELOW THE FWD OIL PRESSURE FITTING. ENGINE WAS REMOVED AND SENT OUT FOR SERVICING OR REPAIR.SDR 2010F00131Cylinder · separatedFAILURE OF LOWER UNIT CYL NR 5, SEPARATED FROM CRANKCASE.SDR ZJWA2010F00121Crankcase · crackedPILOT HAD LOSS OF OIL PRESSURE ON LT ENGINE AND SHUT ENGINE DOWN AND LANDED AS SOON AS PRACTICAL. A CRACK WAS FOUND ON THE CRANKCASE AT THE TOP FWD STUD HOLE OF THE NR 2 CYLINDER BASE STUD LEADING TO AN OIL GALLEY. NEARLY ALL THE OIL HAD LEAKED OUT.SDR 2010FA0000592Lifter · worn((5CSR)) DURING A CYLINDER CHANGE JOB PROMPTED BY LOW CYLINDER COMPRESSION AND HIGH IRON CONTENT IN OIL IT WAS NOTED AN ABNORMAL AND UNSAFE AMOUNT OF WEAR AND SPALLING ON THE LIFTER FACE. THIS DIRECTLY CAUSED EXCESSIVE AND UNSAFE WEAR ON THE CAM SHAFT LOBES.SDR 2010FA0000591Camshaft · worn((5CSR)) DURING A CYLINDER CHANGE JOB PROMOTED BY LOW CYLINDER COMPRESSION AND HIGH IRON CONTENT IN OIL, IT WAS NOTED AN ABNORMAL AND UNSAFE AMOUNT OF WEAR ON THE CAM SHAFT LOBES. IT WAS DIRECTLY CAUSED BY LIFTERS THAT HAD EXCESSIVE AMOUNTS OF SPALLING. IT ISDR 2010FA0000686Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000685Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000684Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000683Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000682Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000681Camshaft · misoverhauled(WS9R) CAMSHAFT LOBES HAVE BLAST MEDIA THAT WAS NOT CLEANED OFF PROPERLY AND HAS LEFT THE MEDIA IMBEDDED IN THE LOBES OF THE CAMSHAFT. THIS WAS A NEW OUT-OF-BOX COMPONENT.SDR 2010FA0000598Camshaft · brokenPILOT STATED THE ENGINE BECAME ROUGH AFTER TAKEOFF. RETURNED TO AIRPORT & LANDED. FOUND NR 1 CYLINDER TO BE COLDER THAN REST. PULLED ROCKER COVER & NOTED THE VALVES WERE NOT MOVING WHEN ROTATING ENGINE. PULLED ROCKER ARMS & PUSHRODS BUT FOUND NO PROBLEMS. REMOSDR WS9R2010FA0000466Camshaft · damaged((WS9R)) FOUND ABRASIVE MEDIA TRAPPED BETWEEN THE NR 4 EXHAUST LOBE AND THE FWD THRUST SURFACE OF THE CAMSHAFT. ALSO, BY USING A 10X MAGNIFYING GLASS, FOUND THAT THE CAM LOBES AND MACHINED BEARING SURFACES WERE ROUGH AS IF DAMAGED BY ABRASIVE MEDIA BLASTING.
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