Lycoming IO-540-C4B5

Service difficulty reports · 182

Newest first. General aviation reporting is voluntary.

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 engine_model_key = 'IO540C4B5'
  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 97ZZZX2889Cylinder · failedPILOT NOTICED LEFT ENGINE COWLING BECOMING COVERED WITH OIL. ENGINE WAS UNCOWLED FOR INVESTIGATION AND FOUND NR 2 CYLINDER HEAD CRACKED COMPLETELY OFF THE CYLINDER BARREL. THE ONLY THING HOLDING THE CYLINDER HEAD IN PLACE WAS THE EXHAUST, INDUCTION TUBE, ANJun 5, 1997 · N6881Y · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR 97ZZZX2886Crankcase · crackedFOUND A CRACK IN THE LEFT CASE HALF BETWEEN NR 4 AND NR 6 CYLINDERS.May 29, 1997 · N46SD · Piper PA23250 · Reciprocating Engine Power SectionSDR CA970603025Lift Detector · contaminated(CAN) DURING OPERATION IN RAIN AND SNOW, STALL WARNING LIGHT REMAINED ON AFTER AIRCRAFT STALL COMPLETED. AFTER LANDING, STALL LIFT DETECTOR WORKED AND LIGHT WENT OUT. AFTER COMPLETION OF OPERATION, STALL LIFE DETECTOR INSPECTED AND FOUND DIRTY, PAINT, AND WAMay 24, 1997 · Piper PA23250 · Stall Warning SystemSDR CA970603028Wheel · broken(CAN) DURING LANDING, PILOT NOTICED THERE WAS A TIRE BLOW-OUT ON THE RT SIDE. MAINTENANCE CHECK REVEALED WHEEL RIM WAS CRACKED FIVE INCHES.May 24, 1997 · Piper PA23250 · Wheel/Ski/FloatSDR AU970557Pipe · holed(AUS) RH ENGINE NO6 CYLINDER ROCKER OIL DRAIN LINE CHAFED ON BAFFLE STAY - ROCKER DRAIN PIPE ATTACHMENT HOSES PERISHED -PERSONNEL/MAINTENANCE ERRORMay 17, 1997 · Piper PA23250 · Reciprocating Engine Oil SystemSDR CA970521006Brake · damaged(CAN) DISC 16432A617 FOUND WITH THREE BOLTS LOOSE AND BOLT HOLES ELONGATED IN DISC. TWO BOLTS FOUND WITH CRACKS. WHEN PRIED, A PIECE 1 INCH BY 2.5 INCHES OF THE LATERAL WALL OF DISC CAME OFF. WAS NOT EVIDENT LAST 59 HR INSP. REPLACED. MAY BE SOME CONFUSIOMay 14, 1997 · Piper PA23250 · BrakeSDR CA970521007Nut · corroded(CAN) IN CRUISE, LEFT ENGINE STARTED TO RUN ROUGH. AIRCRAFT LANDED. MAG CHECK CARRIED OUT, 300 RPM DROP WITH LEFT MAG OFF. NR 4 CYLINDER LEAD DISCONNECTED, RETAINING NUT MISSING ONLY SMALL RING PART FROM NUT FOUND. INTERGRANULAR CORROSION. REPLACED.May 14, 1997 · Piper PA23250 · Magneto/DistributorSDR CA970408012Roll Pin · sheared(CAN) PILOT FOUND LEFT ENGINE TO BE SURGING WHILE IN CRUISE DURING ICING CONDITIONS. PILOT NOTICED WHEN REFUELING THE OUTBOARD LT TANK WAS NEARLY EMPTY WHILE THE INBOARD TANK TO BE QUITE FULL. INVESTIGATION FOUNDTHE LT FUEL SELECTOR TO BE PARTLY POSITIONED TMar 26, 1997 · Piper PA23250 · Aircraft Fuel Distribution SystemSDR CA970326011Arm · corroded(CAN) A/C VERY HARD TO STEER ON TAXIING. ACCUMULATION OF DUST AND DIRT IN STEERING ARM BUSHINGS CAUSED BINDING IN STEERING LINKAGE. CLEANED AND LUBRICATED.Mar 14, 1997 · Piper PA23250 · Landing Gear Steering SystemSDR 97ZZZX567Hose · leakingTHIS LINE LOOKED VERY GOOD. NOT STIFF OR CHAFED IN ANY WAY. HOWEVER, THE RUBBER HOSE BELOW THE BRAIDED COVER RUPTURED AND ALLOWED FUEL TO SOAK BETWEEN CYLINDERS NR 1 AND NR 3 CREATING AN IN-FLIGHT FIRE HAZARD. ONLY WAY TO CHECK OR TEST IS REMOVAL OF LINE ANJan 6, 1997 · N6206Y · Piper PA23250 · Engine Fuel DistributionSDR 96ZZZX5808Carbon Brush · excess wornOWNER REPORTED EXCESSVIE MAG DROP INTERMITTENTLY RIGHT ENG LEFT MAG. NOTICED EXCESSIVE CARBON DUST AROUND MAG VENT. PULLED MAG AND OPENED UP EVERYTHING COATED WITH CARBON DUST. SUBMITTER STATED BRUSH WORN TOO QUICKLY. MANUFACTURE BRUSH FROM HARDER SUBSTANCEOct 4, 1996 · N415CC · Piper PA23250 · Magneto/DistributorSDR CA960924028Fuel Hose · ruptured(CAN) WHILE TAXIING, PILOT NOTICED FLAMES COMING FROM LEFT ENGINE. THE ENGINE WAS SHUT DONW AND FLAMES WENT OUT. ENGINE COWLING AREA WAS FOAMED AS A PRECAUTIONARY MEASURE WHEN THE COWLS WERE REMOVED A FLEX FUEL LINE FROM THE FUEL DISTRIBUTOR ON THE TOP OF THE Sep 16, 1996 · Piper PA23250 · Engine Fuel DistributionSDR CA960923014Magneto · faulty(CAN) ON INSPECTION THE MAGNETO DISTRIBUTOR TEETH WERE FOUND MISSING.Sep 12, 1996 · Piper PA23250 · Magneto/DistributorSDR CA961007031Magneto · faulty(CAN) DURING INSPECTION OF THE #1 ENGINE, THE MAGNETO INPUT SHAFT NUT WAS FOUND SEPARATED FROM THE SHAFT.Sep 12, 1996 · Piper PA23250 · Magneto/DistributorSDR CA961007032Magneto · cracked coil(CAN) DURING INSPECTION THE #2 ENGINE MAGNETO HAD A CRACKED COIL.Sep 12, 1996 · Piper PA23250 · Magneto/DistributorSDR CA960909003Air Dist Box · grooved(CAN) ELEVATOR CABLES GROOVED THE AIR DISTRIBUTION BOX. THE CONTROL CABLES WERE INSTALLED CORRECTLY AS PER PIPER PARTS BOOK. THE CORRECTIVE ACTION WAS TO CUT BACK THE BOX AS REQUIRED FOR CLEARANCE AND WELD IN A NEW BOTTOM FOR THE AIR BOX.Aug 28, 1996 · Piper PA23250 · Air Distribution SystemSDR 96ZZZX4826Cylinder · piston failedAIRCRAFT MADE EMERGENCY LANDING. RIGHT ENGINE FAILED DUE TO NR 2 CYLINDER AND PISTON DEPARTING AIRCRAFT IN-FLIGHT. CYLINDER PARTS AND SIDE COWL NEVER RECOVERED. TEAR-DOWN INSPECTION REVEALED NO APPARENT REASON FOR FAILURE.Aug 9, 1996 · N2343Z · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR 96ZZZX3562Shaft · shearedDURING FLIGHT, OVERSPEED CONDITION OCCURRED ON RT ENGINE. ENGINE WAS SHUT DOWN AND LANDED. MECHANIC FOUND GOVERNOR DRIVESHAFT SHEARED.Jun 12, 1996 · N5064C · Piper PA23250 · Turbine GovernorSDR AU960809Tube · cracked(AUS) FUSELAGE STEP TUBE CRACKED - AIRCRAFT HAS BEEN MODIFIED IAW SB672AND AD/PA28/81May 3, 1996 · Piper PA23250 · Fuselage Main, StructureSDR AU960810Brace · cracked(AUS) MAIN LANDING GEAR DRAG LINK FITTING SUPPORT BRACE CRACKED IN AREA OF ATTACHMENT BOLTMay 3, 1996 · Piper PA23250 · Landing Gear Retraction/Extension SystemSDR 96ZZZX2511Points · deformedAIRCRAFT WAS BEING RUN BEFORE FLIGHT. WHEN SHUTTING RIGHT MAG OFF ON LEFT ENGINE, ENGINE QUIT. CHECKED P-LEADS FOR GROUNDING AND PROPER INSTALLATION. REMOVED MAG AND CHECKED COIL, POINT GAP AND REPLACED CONDENSER. UPON CHECKING E-GAP FOUND POINTS NOT CLOSIApr 23, 1996 · Magneto/DistributorSDR AU960145Bolt · unapproved part(AUS) NO2 CYLINDER CONNECTING ROD PNO 74502 BOLT INCORRECT PART - BOLT PNO 75060/1 FITTED - CORRECT PNO 74644 - INCORRECT BOLT IS LONGERTHAN THE CORRECT ONE - IPC IS UNCLEAR ON CORRECT PART NUMBER BOLTTO BE FITTED - UNAPPROVED PART - PERSONNEL/MAINTENANCE ERROFeb 9, 1996 · Piper PA23250 · Reciprocating Engine Power SectionSDR 96ZZZX852Shaft · wornREMOVED MAGNETO DURING ANNUAL INSPECTION AND NOTICED SHAFT NUT WAS COMPLETELY STRIPPED AND HELD IN PLACE ONLY BY BROKEN COTTER PIN. REMOVED COTTER PIN AND NUT, FOUND SHAFT COMPLETELY STRIPPED AND BUSHING VERY LOOSE AND SLOPPY ON SHAFT. REMOVED BUSHING AND FOJan 26, 1996 · N5729Y · Piper PA23250 · Magneto/DistributorSDR 96ZZZX685Adapter · wrong partTHE MAG ADAPTER INSTALLED WAS THE WRONG P/N LW-12706 WHICH IS THINNER. WHEN A NEW MAG WAS INSTALLED TO REPLACE THE OLD MAG (WHICH WAS REMOVED DUE TO A BAD BEARING AND RACE), THE NEW MAG BEARINGS LASTED ABOUT 2 MINUTES. INVESTIGATION FOUND THE WRONG PART NUMBJan 15, 1996 · N8435H · Conaer LA4250 · Magneto/DistributorSDR CA960212024Alternator · faulty(CAN)INSPECTION REVEALED THE TWO ALTERNATORS TO BE FAULTY. ONE DID NOT FUNCTION AT ALL, AND THE OTHER ONLY VERY WEAKLY. BATTERY 6-35 DID NOT CHARGE FULLY AFTER LONG CHARGING HOURS. THE BATTERY PROBABLY WASNOT AT MAXIMUM CHARGE LEVEL FOR MANY FLIGHT HOURS, THUSNov 17, 1995 · Piper PA23250 · DC Generator-AlternatorSDR 95ZZZX5822Cylinder · crackedTHE PILOT REPORTED LOW EGT ON THE LEFT ENGINE. A VISUAL INSPECTION OF NR 6 CYLINDER WHERE THE EGT PROBE IS LOCATED REVEALED A CRACK AT THE LOWER SPARK PLUG HOLE. AFTER REMOVING THE CYLINDER, FOUND THE CRACK WENT FROM SPARK PLUG HOLE TO SPARK PLUG HOLE WITH MSep 19, 1995 · N2471M · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR CA951026015Cylinder · disintegrated(CAN)THE #5 CYLINDER WAS TORN OFF THE ENGINE BLOCK. THE PISTON BROKE INTO A THOUSAND PIECES AND ALL THE REST OF THE CENTRAL PARTS WHICH KEEP THE ENGINE TOGETHER WERE CRACKED. IT IS THOUGHT THAT EITHER THE #5 CYLINDER PISTON OR PISTON PIN FAILED AND THE RESULTAug 29, 1995 · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR 95ZZZX4507Bearing · failedLEFT ENGINE WOULD NOT START. TROUBLESHOOT TO LEFT MAG. BEARINGS IN MAG WORN, CAM NOT ACTIVATING POINTS. WHEN REMOVING MAG, FOUND BEARING ON MAG DRIVE GEAR MISSING BALLS AND TEETH MISSING ON GEAR OR CHIPPED.Aug 15, 1995 · N51ME · Piper PA23250 · Magneto/DistributorSDR CA951026016Top Ring · broken(CAN)DURING 100 HOUR INSPECTION #1, #5 & #6 CYLINDERS WERE FOUND WITH VERY LOW COMPRESSION AND IT WAS DECIDED TO REPLACE THE CYLINDERS. SHORTLY BEFORE THIS THE ENGINE HAD HIGH OIL COMSUMPTION AND #2, #3 & #4 CYLINDERS HAD TO BE REPLACED. ON ALL CYLINDERS THE Aug 2, 1995 · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR 95ZZZX2394Rocker Arm · misinstalledPERFORMED 400-HOUR VALVE INSPECTION, AND FOUND ALL ROCKER ARMS REVERSED ON ALL 6 CYLINDERS. EXHAUST ROCKER ARM OIL PORT SHOULD SPRAY OIL TOWARDS VALVE AND INTAKE ROCKER ARM OIL PORT SHOULD SPRAY OIL TOWARDS PUSH ROD ON THIS ENGINE.Apr 28, 1995 · N6514A · Piper PA23250 · Reciprocating Engine Cylinder SectionSDR 95ZZZX1910Filter · defectiveWHEN REMOVING OIL FILTER AFTER APPROXIMATELY 10 HOURS OF SERVICE CHANGE, DISCOVERED THE OIL FILTER CAN PORTION WAS SPINNING/ROTATING IN THE BASE PLATE. NO LEAKS HAD OCCURRED DURING SERVICE.Mar 28, 1995 · N2FOR · Piper PA23250 · Reciprocating Engine Oil SystemSDR 95ZZZX588Coil · shortedENGINE WOULD NOT START. TRACED PROBLEM DOWN TO SHORTED COIL IN LEFT MAG.Jan 10, 1995 · N46SD · Piper PA23250 · Magneto/Distributor
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