JASC 8530

Service difficulty reports · 4,341

Reports filed under 8530 · Reciprocating Engine Cylinder 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 = '8530'
  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 2022FA0000522Exhaust Valve · brokenENGINE BEGAN TO RUN ROUGH ON DECENT FOR LANDING. THE HELICOPTER LANDED NORMALLY AT THE LANDING ZONE WITH EXCESSIVE MANIFOLD PRESSURE. WHEN THE THROTTLE WAS REDUCED TO IDLE THE ENGINE STOPPED RUNNING. EXHAUST VALVE STEM BROKE AT BELL CURVE. SEVERE CYLINDER DAMNov 4, 2019 · N7197V · Robsin R44RAVENIISDR 2022FA0000444Intake Valve · burnedPARTIAL LOSS OF POWER. TAKE FOR ANNUAL, COMPRESSIONS WERE LOW, INTAKE VALVES BURNED WITH METAL IN OIL. BORE SCOPED CYLINDERS. ENGINE WAS REMOVED AND SHIPPED TO LYCOMING. EXCESSIVE WEAR WAS NOTED ON ROCKER ARMS, PUSHRODS AND ROCKER SHAFTS OF ALL CYLINDERS. CYLIOct 28, 2019 · N41LY · Robsin R44SDR 2019FA0000342Exhaust Valve · wornDURING STANDARD 50 HOUR SCHEDULED OIL CHANGE AS S.O.P. DIFFERENTIAL CYLINDER LEAK CHECKS ARE PERFORMED. CYLINDER #1 WAS 60/80 PSI, OTHER CYLINDERS WERE IN MID TO UPPER 70'S. ENGINE HAD LEAKING EXHAUST VALVE. ENGINE TIME SINCE OVERHAUL: 1271.8 HOURS.Oct 16, 2019 · N861RB · Cessna 172SSDR 2019FA0000322Cylinder · brokenFRONT PILOT SIDE CYLINDER (#2?) BROKE APART IN FLIGHT. I'M NOT SURE WHICH CYLINDER SERIAL NUMBER BROKE, BUT IT IS ONE OF: 28520-16, 28279-14, 28387-30, 28415-23.Sep 22, 2019 · N28991 · Amrgen AA5BSDR HYIA20190920002Cylinder · damagedPILOT REPORTED RIGHT ENGINE MANIFOLD PRESSURE DROPPED TO 20". AFTER FULL POWER WAS APPLIED THE RIGHT ENGINE STARTED TO SURGE. MAINTENANCE INSPECTED AND FOUND DAMAGE AND DEBRIS IN THE 1,3 & 5 CYLINDERS, FURTHER INVESTIGATION SHOWED METAL SHAVINGS IN THE OIL SUMSep 19, 2019 · N751CA · Cessna 402CSDR 2020FA0000035Rocker Boss · brokenTHE INFORMATION HAS BEEN FOUND AFTER REMOVAL AND INSPECTION OF CYLINDER NR 1 ROCKER COVER. AFTER RECEIVING A CALL THAT AN AIRCRAFT HAD LANDED WITH ENGINE PROBLEMS OVER THE WEEKEND, I STARTED INSPECTION OF ENGINE. I HAD FOUND THAT THE EXHAUST ROCKER BOSS HAD Sep 18, 2019 · N2883R · Cessna 182KSDR 2019FA0000307Cylinder Head · separatedCYLINDER FAILURE, #5 CYLINDER COMPLETE BARREL SEPARATION AT THE THREADS INTO THE HEAD IN FLIGHT. AIRCRAFT WAS ABLE TO RETURN TO THE FIELD AND LAND SAFELY. SUBSEQUENT REMOVAL FOUND THE BAFFLING HAD KEPT THE HEAD FROM FALLING OFF THE AIRPLANE, ONLY 1/3 OF THE Sep 15, 2019 · N7920B · Cessna 172SDR 2019FA0000282Cylinder Head · separatedDURING POST FLIGHT INSPECTION FOR A RELATED ISSUE, DISCOVERED CYLINDER HEAD P/N 170326 PARTIALLY SEPARATED FROM THE P/N 126546 CYLINDER BARREL. FAILED CYLINDER IS IN #14 POSITION. HEAD WAS SEPARATING AT THREADS IN BARREL.Aug 14, 2019 · N345TH · Namer TB25JSDR 2019FA0000281Cylinder Head · separatedDURING POST FLIGHT INSPECTION FOR A RELATED ISSUE, DISCOVERED CYLINDER HEAD PARTIALLY SEPARATED FROM THE P/N 126546 CYLINDER BARREL. FAILED CYLINDER IS IN #14 POSITION. HEAD WAS SEPARATING AT THREADS IN BARREL.Aug 14, 2019 · N345THSDR UPXC20190823001Intake Valve · fragmentedTHE PILOT HEARD/FELT A POP, HAD AN INCREASE IN VIBRATION, AND A PARTIAL LOSS OF POWER. HE MADE AN EMERGENCY DESCENT TO A POWER ASSISTED LANDING IN THE TUNDRA, UPON LANDING SAW SMOKE COMING FROM THE ENGINE COMPARTMENT. SHUT DOWN AIRCRAFT. FOUND NO EVIDENCE OF Aug 13, 2019 · N555EL · Robsin R44RAVENIISDR UPXC2019082100005Intake Valve · fragmentedTHE PILOT HEARD/FELT A POP, HAD AN INCREASE IN VIBRATION, AND A PARTIAL LOSS OF POWER. HE MADE AN EMERGENCY DESCENT TO A POWER ASSISTED LANDING IN THE TUNDRA, UPON LANDING SAW SMOKE COMING FROM THE ENGINE COMPARTMENT. SHUT DOWN AIRCRAFT. SAW OIL IN THE ENGINE Aug 13, 2019 · N555EL · Robsin R44SDR 2020FA0000040Rocker · brokenDURING FLIGHT BOTH PUSHRODS ON THE NR 3 CYLINDER BROKE THROUGH THE ROCKER ARMS CAUSING IMMEDIATE LOSS OF POWER ON THAT CYLINDER AND ENGINE TO RUN ROUGH. AIRCRAFT WAS LANDED SAFELY, PARTS WERE CHARGED AND AIRCRAFT WAS RETURNED TO SERVICE. LIKELY CAUSE IS CRACAug 8, 2019 · N3076E · Cessna 172NSDR BEMA2019072900001Intake Valve · brokenTHE #1 CYLINDER INDUCTION VALVE FAILED IN FLIGHT. THE PROBLEM WAS NOT DETECTED UNTIL THE PILOT DID HIE POST FLIGHT WALK AROUND. THE VALVE BROKE IN HALF AT THE NARROW SPOT WERE THE VALVE KEEPERS ARE. THE VALVE PART NUMBER IS 17A23937, AND CONTROL NUMBER FOR THEJul 23, 2019 · N131BA · Beech 65A80SDR CA190718004Exhaust Valve · stiff(CAN) FOLLOWING IS SNAG BY PILOT - ENGINE PRODUCED FULL POWER INITIALLY DURING GO AROUND THEN DROPPED TO 2200 RPM THEN BACK TO FULL POWER. WHAT MAINTENANCE FOUND - AFTER THE SECOND OCCURRENCE OF POWER LOSS WE DECIDED TO PERFORM LYCOMING SB 388. (EXHAUST VALVE Jul 10, 2019 · Cessna 172SSDR CA190717007O-Ring · wrong part(CAN) DURING ENGINE REPAIR, CYLINDER SHROUD TUBES REMOVED. SHROUD TUBE O RINGS PREVIOUSLY INSTALLED WERE BLACK IN COLOUR. BOTH OEM AND PMA O RINGS FOR THIS MODEL OF ENGINE ARE ORANGE IN COLOUR. COMPARED TO THE OEM O RING, THE BLACK O RINGS ARE DIMENSIONALLY DIJul 2, 2019 · Cessna 172NSDR CA190717006Rocker · wrong part(CAN) (*SUP*) DURING ENGINE REPAIR, ROCKER FULCRUMS REMOVED FOR CLEANING AND INSPECTION. ONE FULCRUM NOTICEABLY DIFFERENT THAN OTHER 7. VISUALLY DIFFERENT, DIMENSIONS DIFFERENT, AUTOMOTIVE STYLE PRODUCTION MARKS. LACKS: OEM PART NUMBER, MFG NUMBER, HEAT TREAT Jul 2, 2019 · Cessna 172NSDR CA190717009Lifter · failed(CAN) ENGINE HAS 825 TT SINCE OVERHAUL (OTHER MTCE FACILITY 2018). AT 682 HRS TIS, LIFTERS REMOVED BY THE OTHER FACILITY DUE TO FAILURE. MARCH 20019 MAINTENANCE ENTRY INDICATES NEW LIFTERS INSTALLED. 142 TIS, ENGINE RECEIVED DUE TO METAL CONTAMINATION, LIFTERSJul 2, 2019 · Cessna 172NSDR CA190723008Cylinder · cracked(CAN) HIGHER THAN EXPECTED CYLINDER HEAD TEMPERATURE (CHT), FOLLOWED BY DECREASING RPM AND A KNOCKING NOISE THAT PROGRESSIVELY GOT LOUDER. ON INSPECTION IT WAS FOUND THAT THE #3 CYLINDER WAS CRACKED STARTING FROM THE BOTTOM SPARK PLUG HOLE HEADING TOWARD AND Jun 27, 2019 · Bbavia 8GCBCSDR CA190622005Valve Guide · malfunctioned(CAN) DURING WARM UP OF ENGINE, PILOT NOTED AN ABNORMAL SOUNDING ENGINE AND HIGH MANIFOLD PRESSURE. THERE WERE A FEW SMALL BACK FIRES NOTED. AFTER INVESTIGATION IT WAS DETERMINED THAT THE EXHAUST VALVE ON THE #2 CYLINDER WAS STUCK. THE CYLINDER WAS RECENTLY REJun 21, 2019 · Robsin R44RAVENIISDR 2019FA0000216Cylinder · leakingLARGE AMOUNT OF OIL FOUND IN COWLING DURING PREFLIGHT. FOUND OIL COMING FROM CYLINDER HEAD AND BARREL CONNECTION.Jun 14, 2019 · N9855WSDR YV3R2019012200124Riser · crackedCUSTOMER REPORTED CYLINDER #3 RISER CRACKED AND BROKE.Jun 10, 2019 · N471AT · Robsin R22BETASDR 2019FA0000279Engine · power lossCYLINDER AND/OR SPARK PLUG FAILURE RESULTED IN A LOSS OF COMPRESSION IN ONE CYLINDER AND SUBSEQUENT POWER LOSS.Jun 9, 2019 · N9573P · Piper PA25260SDR CA190523001Plenum · cracked(CAN) AIRCRAFT WAS SNAGGED FOR RUNNING VERY ROUGH AT IDLE, EXTENSIVE INSPECTION REVEALED THAT ALL 3 INDUCTION INTAKE TUBES OF THE ENGINE WERE CRACKED ON THEIR FLANGES. FURTHER INSPECTION SHOWED THAT THE INTAKE MANIFOLD PLENUM MOUNTING POINT WAS LOOSE CAUSING EMay 23, 2019 · Diamon DA20C1SDR CA190530009Probe · malfunctioned(CAN) ON JANUARY 24, 2019 THE LEFT HAND ENGINE CHT SHOWED AN OVER TEMP INDICATION AND ACTIVATED THE MASTER CAUTION. THE CHT WAS REPLACED WITH A NEW UNIT AT 2738.8 TAT. ON MAR 19, 2019 THE R/H CHT FAILED CAUSING A MASTER CAUTION INDICATION. THE CHT PROBE WAS REMay 23, 2019 · Piper PA34220TSDR HYIA20190524001Bearing · crackedPILOT REPORTED LEFT PROPELLER VIBRATES ABOVE 2500 RPM. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE #1 CYLINDER EXHAUST VALVE ERODED AND RECESSED INTO CYLINDER HEAD, AND #4 THE CYLINDER TO HAVE LOW COMPRESSION AND THE #4 CONNECTING ROD BEARING TO HAVE A CRAMay 17, 2019 · N26514 · Cessna 402CSDR HYIA20190515002Cylinder · failedPILOT REPORTED A ROUGH ENGINE; "MISSING" WHEN PROPS BROUGHT BACK FOR CRUISE AND STRONG VIBRATIONS ON FINAL APPROACH. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE NR 4 CYLINDER EXHAUST VALVE GUIDE TO HAVE PLAY, THE EXHAUST VALVE CHIPPED, AND THE EXHAUST VALVMay 12, 2019 · N68752 · Cessna 402CSDR 2020FA0000102Cylinder · crackedPILOT REPORTED A LOUD POP/BANG. THEN RPM DROPPED TO 1200 AND LOSS OF POWER. APPROXIMATELY 30 SECONDS, RPM DROPPED TO 400, THEN ENGINE STOPPED, ACFT LANDED SAFELY IN FIELD. INSPECTION, ONCE COWLING WAS REMOVED (DAMAGE NEAR NR 3 CYLINDER). CYLINDER HAD SEPARMay 10, 2019 · N3916S · Cessna 172ESDR CA190515016Exhaust Valve · damaged(CAN) AIRCRAFT OWNERS MAINTENANCE FACILITY REPORTED LOW COMPRESSION ON NEWLY OVERHAULED ENGINE. CYLINDER HEADS SENT BACK TO OVERHAUL SHOP AND FOUND TO BE OVERHEATED. LOSS OF COOLANT IS SUSPECTED. ALL 4 EXHAUST VALVES FOUND TO HAVE SOME PITTING ON THE SEAT FACEMay 9, 2019 · Tecnam P2006TSDR CA190509011Cylinder · separated(CAN) SOON AFTER TAKEOFF ENGINE STARTED VIBRATING ABNORMALLY, VIBRATIONS GOT WORST AND PILOT DECLARED AN EMERGENCY AND LANDED SAFELY ON AIRPORT RUNWAY. PRIMARY INVESTIGATION SHOWS CYLINDER #3 NOT SECURED TO CRANKCASE. EFFECT OF VIBRATIONS SHOWS BROKEN EXHAUST,May 8, 2019 · Cessna 152SDR JRUR201905060002Exhaust Valve · out of toleranceDURING PERFORMANCE OF SB 388C, IT WAS FOUND THAT THE NR 4 CYLINDER EXHAUST VALVE TO GUIDE CLEARANCE MEASURED .031". THIS EXCEEDS THE MAXIMUM ALLOWABLE CLEARANCE OF .030". THIS ENGINE WAS OVERHAUL. THE TOTAL TIME SINCE NEW IS NOT BEING LISTED AS IT IS NOT KNOWNMay 6, 2019 · N113HP · Cessna 182TSDR JRUR201905060001Exhaust Valve · out of toleranceDURING PERFORMANCE OF SB 388C, IT WAS FOUND THAT THE NR 3 CYLINDER EXHAUST VALVE TO GUIDE CLEARANCE MEASURED .031". THIS EXCEEDS THE MAXIMUM ALLOWABLE CLEARANCE OF .030". THIS ENGINE WAS OVERHAUL. THE TOTAL TIME SINCE NEW IS NOT BEING LISTED AS IT IS NOT KNOWNMay 6, 2019 · N113HP · Cessna 182TSDR CA190622006Pushrod · damaged(CAN) DURING 300 HOUR SB388C VALVE GUIDE INSPECTION IT WAS NOTED BY THE ENGINEER THAT ONE OF THE PUSH RODS HAD BEEN BENT DURING OPERATION. AFTER FURTHER INVESTIGATION IT WAS DETERMINED TO HAVE HAD THE INCORRECT LENGTH PUSH ROD INSTALLED AT ENGINE OVERHAUL. PROApr 30, 2019 · Robsin R44RAVENIISDR HYIA20190426001Exhaust Valve · damagedDURING INSPECTION THE #4 CYLINDER OF THE LEFT ENGINE WAS FOUND TO HAVE LOW COMPRESSION. UPON FURTHER INSPECTION THE EXHAUST VALVE HAD FOUR SMALL CHIPS IN THE EDGE OF THE VALVE, AND THE EXHAUST VALVE SPRING HAD PIECES THAT HAD COME APART. NO DAMAGE TO THE ROCKApr 23, 2019 · N6879R · Cessna 402CSDR 2019FA0000113Cylinder · unknownINTERMITTENT "HUNG VALVE CONDITION" ON THE EXHAUST SIDE OF (2) FACTORY NEW CYLINDERS P/N 05K21104 WITH 750 HRS TSN. CONDITION CAUSING ROUGH RUNNING ENGINE ON OCCASION.Apr 9, 2019 · N6042Z · Cessna 172SSDR 2019FA0000108Cylinder · separatedWHILE PERFORMING A LOCAL INSTRUCTION FLIGHT FOR AN IFR RATING. AFTER PERFORMING AN APPROACH AND A TOUCH AND GO ON RUNWAY 10 AT POMPANO BEACH AIRPARK (KPMP), THE AIRCRAFT INITIATED A CLIMB AT VX 62 KNOTS AND HEADED NORTH EAST BOUND TO BE HANDED OFF TO APPROACH.Mar 13, 2019 · N1206U · Cessna 172SSDR HYIA20190410001Cylinder · failedPILOT REPORTED RIGHT ENGINE SURGING AFTER TAKEOFF. MAINTENANCE INSPECTED AND FOUND THE #3 CYLINDER TO BE AT FAULT. THE #3 CYLINDER WAS REPLACED WITH NO FURTHER DEFECTS NOTED.Mar 11, 2019 · N991AA · Cessna 402CSDR HYIA20190315006Cylinder · damagedPILOT REPORTED RIGHT ENGINE SURGES, SHUTTERS AND VIBRATES ON ALL POWER SETTINGS. MAINTENANCE INSPECTED AND FOUND CYLINDER NR 4 WEAR IN EXHAUST VALVE KEEPER AREA, AS WELL AS INTAKE AND EXHAUST LIFTERS NOT WORKING PROPERLY. REMOVED AND REPLACED CYLINDER #4 AS WEMar 7, 2019 · N402VN · Cessna 402CSDR CA190308025Cylinder · cracked(CAN) OIL NOTED ON LOWER COWLING, INSPECTION SHOWED OIL LEAKING FROM PUSHROD HOUSING ON NR 1 CYLINDER. PART REMOVED AND FOUND TO BE CRACKED AROUND 50% OF ITS CIRCUMFERENCE AT THE SPRING RETENTION FERRULE.Mar 6, 2019 · Cessna 210LSDR HYIA20190315002Cylinder · leakingPILOT REPORTED SHAKING FELT IN AIRFRAME DURING CLIMB/CRUISE WITH NO ABNORMAL ENGINE INDICATIONS ON INSTRUMENTATION. MAINTENANCE INSPECTED AND FOUND THE RIGHT ENGINE #6 CYLINDER TO HAVE LOW COMPRESSION. THE CYLINDER WAS REPLACED ALONG WITH THE RIGHT MAGNETO ANMar 4, 2019 · N6879R · Cessna 402CSDR HYIA20190315007Lifter · collapsedPILOT REPORTED ENGINE RUNS ROUGH IN CLIMB. MAINTENANCE INSPECTED AND FOUND LOW COMPRESSION ON THE NR 2 & NR 3 CYLINDERS OF THE RIGHT ENGINE, COLLAPSED LIFTERS ON THE NR 5 & NR 6 CYLINDERS, AS WELL AS A CRACKED BEARING ON THE NR 3 CYLINDER CONNECTING ROD. BOTH Feb 26, 2019 · N385CA · Cessna 402CSDR HYIA20190315004Exhaust Valve · brokenPILOT REPORTED RIGHT ENGINE RUNNING ROUGH IN FLIGHT WITH ONE INCH MAP FLUCTUATION INTERMITTENT. MAINTENANCE INSPECTED AND FOUND THE EXHAUST VALVE DISCOLORED AND BROKEN. THE CYLINDER WAS REPLACED WITH NO FURTHER DEFECTS NOTED.Feb 26, 2019 · N3249M · Cessna 402CSDR CA190206018Exhaust Valve · seized(CAN) AT THE TIME OF THE INCIDENT, THE AIRCRAFT WAS BEING USED TO PRACTICE SLOW FLIGHT IN THE LOCAL TRAINING AREA WHEN THE FLIGHT INSTRUCTOR HAD EXPERIENCED A PARTIAL ENGINE POWER LOSS. FULL POWER WAS APPLIED AND CARBURETOR HEAT WAS TURNED OFF, HOWEVER THE ENGFeb 4, 2019SDR HYIA20190208001Cylinder · leakingPILOT REPORTED A SHAKING FELT IN AIRFRAME DURING CLIMB AND CRUISE. MAINTENANCE INSPECTED AND FOUND THE #6 CYLINDER OF THE LEFT ENGINE TO HAVE LOW COMPRESSION. THE LEFT ENGINE RIGHT MAGNETO WAS FOUND TO HAVE INTERNAL OIL AND THE #1 CYLINDER IGNITION CABLE WAS FFeb 3, 2019 · N6879R · Cessna 402CSDR CA190114008Piston · damaged(CAN) PILOT & INSTRUCTOR COMPLETED RUN UP. TAXIED TO RUNWAY AND STARTED TAKE OFF. AT ABOUT 400 FT ENGINE STARTED TO RUN ROUGH. INSTRUCTOR TRIED CARB HEAT THINKING IT WAS CARB ICE BUT MADE NO DIFFERENCE. TOLD TOWER THEY HAD AN ENGINE PROBLEM AND DECLARED AN EMEJan 12, 2019 · Cessna 152SDR HYIA20190107001Intake Valve · damagedPILOT REPORTED RIGHT ENGINE SHUDDERED, THEN STARTED RUNNING ROUGH IN FLIGHT. PRELIMINARY INSPECTION FOUND DAMAGE TO THE NR 1 INTAKE VALVE, DAMAGE TO THE NR 1 AND NR 5 PISTON HEADS AND THE NR 5 CYLINDER INTAKE LIFTER SLEEVE EXTRUDING FROM LIFTER TUBE IN CRANK CJan 5, 2019 · N763EA · Cessna 402CSDR 2020FA0000066Cylinder Head · crackedAPPROXIMATELY 2 INCH RADIAL CRACK IN CYLINDER HEAD ADJACENT TO AND OUTSIDE OF THE INTAKE VALVE. EXTERNAL EVIDENCE OF EXHAUST GASSES ESCAPING FROM CRACK WAS PRESENT AND COMPRESSION TEST PRODUCED FREE FLOW OF SHOP AIR FROM CYLINDER HEAD BETWEEN THE 9TH AND 10THDec 11, 2018 · N63SA · Cessna 172MSDR 2018FA0000509Exhaust Valve · stuckEXHAUST VALVE IN NR 4 CYLINDER STUCK IN FLIGHT CAUSING THE EXHAUST PUSH ROD TO BEND AND BREAK. THE PUSH ROD TUBE ALSO BROKE ALLOWING ENG OIL TO ESCAPE. THERE WAS A DRASTIC LOSS OF ENG OIL AND ENG OIL PRESSURE.Dec 11, 2018 · N830KS · Cessna 172SSDR 2018FA0000505Cylinder · fouledDURING FLIGHT ENG THROTTLE RPM PULLED TO IDLE TO DESCEND WHILE RUNNING ROUGH. ENG SHUTOFF AND COULD NOT BE STARTED. EMERGENCY FIELD LANDING COMPLETED. ACFT SENT THROUGH ANNUAL INSPECTION AND CAUSE OF ROUGH RUNNING ENG FOUND. BOTH SPARK PLUGS IN NR 4 CYLINDDec 11, 2018 · N652MA · Cessna 172RSDR 2018F00153Intake Valve · burnedDURING FLIGHT, PILOT EXPERIENCED "TORQUE KICK". PILOT MADE PRECAUTIONARY LANDING. INSPECTION REVEALED A BURNED INTAKE VALVE. ABOUT 3/8" OF THE MATING FACE WAS BURNED. AIRCRAFT IS NEW, ENGINE ONLY HAD ABOUT 200 HOURS ON IT.Nov 22, 2018 · N805NV · Robsin R44SDR ECPR2018112181318Cylinder Head · crackedDURING TAKEOFF, ENGINE EXPERIENCED A PARTIAL POWER LOSS. PILOT REMAINED IN THE PATTERN AND LANDED. SUBSEQUENT INSPECTION BY MAINTENANCE PERSONELL FOUND A CRACK IN THE #4 CYLINDER. INSPECTION AFTER REMOVING THE CYLINDER REVEALED THAT A CRACK EXISTED FROM ONENov 20, 2018 · N558PU · Piper PA28161
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