Lycoming O-235-L2C

Service difficulty reports · 521

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 = 'O235L2C'
  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 99ZZZX1811Cylinder · crackedOIL LEAK AT NR 1 CYLINDER APPEARED TO BE COMING FROM PUSHROD TUBE SEALS. FURTHER INVESTIGATION AND PRESSURE CHECK DISCLOSED LEAK UNDER INTAKE PUSHROD AT HEAD/BARREL JOINT. A 2 INCH CRACK, 1.50 INCHES DOWN FROM TOP OF CYLINDER WALL WAS VISIBLE INSIDE THE CYLIApr 7, 1999 · N2426N · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR CA991209093Clevis Bolt · failed(CAN) BOLTS FOUND CRACKED AFTER AIRCRAFT DESTROYED IN ACCIDENT.Apr 6, 1999 · Cessna 152 · Flight Compartment EquipmentSDR 99ZZZX1456Pushrod · crackedUPON 100-HOUR INSPECTION TO DETERMINE APPLICABILITY TO AD 80-25-02 R2, NOTED THAT NR 4 CYLINDER INTAKE PUSH ROD P/N 73806T-T WHICH DOES NOT APPLY TO AD, WAS FOUND CRACKED AT END OF ALUMINUM TUBE THAT SWAGES ONTO BALL END OF PUSH ROD, TWO CRACKS WERE OBVIOUS VIMar 3, 1999 · N67975 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR AU990416035Rocker Boss · worn(AU) INSPECTION FOUND THERE WAS EXCESSIVE ROCKER SHAFT TO ROCKER SHAFT BOSS CLEARANCE ON THE INTAKE SIDE OF TWO SEPARATE CYLINDERS. THIS CLEARANCE WAS MEASURED AT 0.008 INCH.Jan 22, 1999 · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR 99ZZZX2031Breather · frozeBREATHER PIPE FROZEN. DID NOT HAVE SECONDARY HOLE, HIGH ENOUGH IN TUBE CAUSED SEAL TO BLOW OUT.Dec 21, 1998 · N7385W · Cessna 152 · Reciprocating Engine Oil SystemSDR 99ZZZX2032Breather · frozeBREATHER PIPE FROZEN. DID NOT HAVE SECONDARY HOLE, HIGH ENOUGH IN TUBE CAUSED SEAL TO BLOW OUT.Dec 21, 1998 · N7385W · Cessna 152 · Reciprocating Engine Oil SystemSDR AU981685Cylinder · cracked(AUS) DURING FLIGHT, THE ENGINE COMMENCED VERY ROUGH RUNNING. GROUND INVESTIGATION FOUND NR 1 CYLINDER HAD CRACKED THROUGH 360 DEGREES FROM THE ATTACHMENT FLANGE TO THE FIRST FIN. THE CYLINDER REMAINED ATTACHED AS ONE END CRACK WAS APPROXIMATELY 19 MM (0.75 IDec 10, 1998 · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR 99ZZZX635Crankcase · crackedDURING 50 HOUR INSPECTION, AN APPARENT OIL LEAK WAS FOUND ON THE TOP LEFT OF ENGINE CASE. PERFORMED DYE PENETRANT TEST. FOUND CRACK IN CASE ABOVE NR 2 CYLINDER ALONG THE EXHAUST LIFTER BOSS. CRACK WAS APPROXIMATELY 4 INCHES LONG. NO APPARENT REASON FOR DEFNov 19, 1998 · N4905H · Cessna 152 · Reciprocating Engine Power SectionSDR CA981130021Power Lever · misinstalled(CAN) NO FRICTION LOCK ON THROTTLE. WHEN THROTTLE REMOVED, IT WAS FOUND TO BE IMPROPERLY SECURED TO CARBURETOR ARM. THE BOLT WAS TOO LONG JAMMING CARBURETOR HOUSING. SUBMITTER STATED IMPROPER NUT USED AND NO COTTER PIN. SPECIAL CLAMP FOUND INSTALLED IN RENov 11, 1998 · Cessna 152 · Power LeverSDR CA981130022Control Unit · worn(CAN) CARBURETOR HEAT CONTROL WIRE FOUND WORN AT THE OUTLET OF CASING NEAR THE CARBURETOR BOX ARM. THIS ONLY DETECTED WITH CARBURETOR HEAT FULLY OPENED.Nov 11, 1998 · Cessna 152 · Fuel Control/Reciprocating EnginesSDR 99ZZZX700Set Screw · malfunctionedAIRCRAFT AT CRUISE SPEED AT APPROXIMATELY 3,000 FEET, VALVE ADJUSTING SCREW COMPLETELY BACKED OUT OF ROCKER ASSY. LOSS OF INTAKE VALVE FOR THAT CYLINDER ENSUED CAUSING LOSS OF POWER, AND EMERGENCY LANDING OF AIRCRAFT.Oct 30, 1998 · N89561 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX3878Pin Plug · wornFOUND EXCESSIVE ALUMINUM FLAKES IN OIL FILTER. SUCTION SCREEN OK. COMP CHECK OK. REMOVED ALL CYLINDERS. PIN PLUG WORN, NR 1 CYL ASSY. SCUFFED CYLINDER WALL.Sep 18, 1998 · N49224 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR CA981113003Push Rod · loose(CAN) DURING INVESTIGATION OF LEAKING VALVE ON NR 2 CYLINDER, THE PRESSED END OF A PUSH ROD WAS FOUND LOOSE. THE ROD WAS A SUPERIOR AIR PARTS MANUFACTURED PART.Sep 18, 1998 · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR CA981006005Mount · broken(CAN) LOWER OLEO COLLAR FOUND BROKEN WHERE THE MOUNT LEG IS WELDED TO THE COLLAR. SOME OTHER IRREGULARITIES WERE FOUND USING NDT.Sep 15, 1998 · Cessna 152 · Engine Mount SectionSDR 98ZZZX3452Push Rod · brokenDURING 100-HOUR INSPECTION NOTED DURING COMPRESSION TEST THAT NR 1 AND NR 3 CYLINDERS WERE LEAKING BY EXHAUST VALVES. WHEN CYLINDERS WERE REMOVED FOR REPAIR, FOUND NR 3 CYLINDER INTAKE PUSH ROD WAS DAMAGED. CAP PORTION AT ROCKER ARM END PULLED OUT OF ROD AS Aug 27, 1998 · N89927 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX3016Valve · failedNR 2 EXHAUST VALVES SEIZED IN VALVE GUIDE AND VALVE HEAD SEPARATED AFTER CONTACT WITH PISTON. SEIZURE OF VALVE STEM IN GUIDE MOST LIKELY DUE TO CARBON ACCUMULATION. AIRCRAFT OPERATED UNDER 14CFR PART 141. SUBMITTER RECOMMENDATION: C/W SB 388B AT MORE FREQUJul 20, 1998 · N69193 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 99ZZZX632Float · stuckAIRCRAFT IS USED FOR FLIGHT TRAINING. PILOT INDUCED POWER ON STALL. AT THIS TIME, AIRCRAFT BEGAN RUNNING ROUGH DUE TO AN EXCESSIVE RICH MIXTURE. AFTER AN EMERGENCY LANDING WAS MADE, THE PILOT TAPPED ON THE CARBURETOR WITH A HAMMER HANDLE, AND RE-STARTED THJun 9, 1998 · N757EK · Cessna 152 · Fuel Control/Reciprocating EnginesSDR 98ZZZX2120Cylinder · failedDURING 100-HOUR INSPECTION, FOUND METAL PARTICLES IN OIL FILTER. FOUND TO BE PISTON PIN WRIST PLUG MATERIAL. CYLINDERS SENT TO MANUFACTURER FOR EVALUATION. REQUIRED OVERHAUL OR REPLACEMENT OF CYLINDERS AFFECTED. APPEARED TO BE CYLINDERS 1 AND 2 (COOLEST RUMay 25, 1998 · Reciprocating Engine Cylinder SectionSDR CA980602028Guide · worn(CAN) DURING 100 HOUR INSPECITON, THE COMPRESSION ON #3 CYLINDER WAS FOUND LOW. TROUBLESHOOTING FOUND THE EXHAUST VALVE LOOSE WITHIN THE GUIDE. A CIRCULAR PIECE OF METAL WAS FOUND IN THE OIL RETURN GALLEY. IT WAS NOT READILY EVIDENT WHERE THE METAL ORIGINATED,May 14, 1998 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX2138Piston Ring · wornTHIS ENGINE HAD 3 CYLINDERS OVERHAULED WITH RINGS IN THE FIELD. THE FOURTH WAS REPLACED WITH A COMPLETE CHROME CYLINDER ASSY. AFTER 30 HOURS OF FLIGHT, THE OIL CONSUMPTION AND BLOW-BY BECAME EXCESSIVE. A COMPRESSION TEST SHOWED 20/80 OR THE 3 OVERHAULED ANDMay 13, 1998 · N49043 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX2439Crankshaft · failedAIRCRAFT DESTROYED AS A RESULT OF FORCED LANDING INDUCED BY A SEPARATION OF THE ENGINE CRANKSHAFT. SUBSEQUENT INVESTIGATION DISCLOSED A FATIGUE FAILURE ADJACENT TO THE CENTER MAIN BEARING JOURNAL. THIS ENGINE HAD EXPERIENCED 2 PREVIOUS PROPELLER STRIKES WHICMay 5, 1998 · N24435 · Piper PA38112 · Reciprocating Engine Power SectionSDR 98ZZZX1862Cylinder · defectiveINSTALLED NEW CYLINDER ASSEMBLIES. HAD NO COMPRESSION NR 1 CYLINDER. REMOVED, FOUND METAL CHIP UNDER VALVE. SUSPECT CAUSE - IMPROPER CLEANING PROCEDURE PRIOR TO ASSEMBLY. SUBMITTER RECOMMENDATION - MORE USEFUL INSPECTION (QC).Apr 29, 1998 · N714TG · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX2636Cylinder · wornREMOVED NR 1, NR 2, AND NR 4 CYLINDERS DUE TO LEAKAGE PAST RINGS. RINGS TOTALLY WORN OUT. ONE CYLINDER CRACKED. EXCHANGE CYLINDER SUPPLIED. TWO CYLINDERS BURNED TO TIO. NEW PISTONS AND RINGS INSTALLED. NEW INTAKE SEALS. NEW OIL RETURN SLEEVES, 6L M20W50Apr 25, 1998 · Reciprocating Engine Cylinder SectionSDR 98ZZZX2160Valve Keeper · wornVALVE KEEPERS WORN, BUT STILL INSTALLED. LET VALVE ASSY MOVE DOWN IN KEEPER ASSY. VALVE WOULD NOT COMPLETELY CLOSE. NO DAMAGE TO CYLINDER OR PISTON.Apr 16, 1998 · N757RM · Cessna 152 · Reciprocating Engine Cylinder SectionSDR AU980404Cylinder · cracked(AUS) ENGINE CYLINDER LEAKING OIL AT BARREL TO HEAD JOINT AND BETWEEN FIRST AND SECOND BOTTOM FINS ON BARREL AREAS. CYLINDER WAS REMOVED AND A PENETRANT CHECK FOUND A CRACK 40MM (1.57 INCH) IN LENGTH (INSIDE) AT THE BARREL TO HEAD JOINT. PART TC: 1,327.Apr 16, 1998 · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR 98ZZZX1597Cylinders · crackedWHILE INVESTIGATING AN OIL LEAK, STAINS WERE NOTED ON THE LOWER SIDE OF THE ENGINE CYLINDERS. THE 4 EACH CYLINDERS WERE REMOVED FOR FURTHER INVESTIGATION AND CRACKS WERE NOTED APPROXIMATELY 1.25 INCHES DOWN FROM THE BARREL TO END. THE CRACKS WERE ON THE UPPEApr 14, 1998 · N714TG · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX2634Carburetor · misoverhauledDURING DISASSEMBLY FOR REPAIR, NOTED THAT ALL INSTALLED COTTER PINS WERE STANDARD STEEL HARDWRE AND NOT THE STAINLESS STEEL COTTER PINS SPECIFIED IN THE ILLUSTRATED PARTS LIST OF THE APPROPRIATE COMPONENT MM.Apr 1, 1998 · N9KA · Cessna 152 · Fuel Control/Reciprocating EnginesSDR CA980303007Mount · cracked(CAN) ENGINE MOUNT CRACKED NEAR BOTTOM RIGHT ENGINE MOUNT BUSHING. REPAIRED.Feb 24, 1998 · Piper PA38112 · Engine Mount SectionSDR CA980303008Cylinder · cracked(CAN) DURING REGULAR MAINTENANCE NR 2 CYLINDER WAS FOUND TO HAVE LOW COMPRESSION. THE CYLINDER WAS REMOVED AND CRACKS WERE FOUND ON BOTH SIDES OF THE BOTTOM SPARK PLUG HOLE. THE EXHAUST VALVE WAS ALSO FOUND BURNED.Feb 24, 1998 · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR 98ZZZX1142Line · blockedENGINE BEGAN LEAKING OIL AT CYLINDER THRU STUD LOCATIONS. AT SAME TIME, FUEL PRESSURE ROSE APPROX 2 POUNDS. FOUND BREATHER LINE MIL-H-6000, .75 INCH TUBE, BLOCKED APPROX 95 PERCENT. BLOCKAGE APPEARS TO BE DETERIORATED INNER HOSE MATERIAL. HOSE MFG'D IN 197Feb 12, 1998 · N39058 · Gulstm AA1C · Reciprocating Engine Oil SystemSDR CA980311007Throttle Cable · jammed(CAN) DURING PRACTICE STALLS AND SPIN RECOVERIES THE THROTTLE CONTROL JAMMED FULL ON. AFTER LANDING THE THROTTLE WAS DISCONNECTED AT THE CARBURETOR. CARB LINKAGE OK BUT CABLE STILL JAMMED. CABLE REPLACED.Feb 11, 1998 · Cessna 152 · Power LeverSDR 98ZZZX768Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOLLOWING ADVISORY THAT CRANKSHAFTS PROCESSED BY AIR AGENCY MAY BE DEFECTIVE. CRANKSHAFT WAS MPI AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.Feb 10, 1998 · Reciprocating Engine Power SectionSDR 98ZZZX770Crankshaft · crackedPART WS REMOVED FROM STOCK FOR PRECAUTIONARY MPI. UNIT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.Feb 10, 1998 · Reciprocating Engine Power SectionSDR 98ZZZX925Crankshaft · crackedPART REMOVED FROM STOCK FOR PRECAUTIONARY MPI. UNIT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.Feb 10, 1998 · Reciprocating Engine Power SectionSDR 98ZZZX931Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOLLOWING ADVISORY THAT CRANKSHAFTS PROCESSED BY AIR AGENCY MAY BE DEFECTIVE. CRANKSHAFT WAS MPI AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.Feb 10, 1998 · Reciprocating Engine Power SectionSDR 98ZZZX691Rocker Adj Nut · looseAIRCRAFT REPORTED SUDDEN LOSS OF POWER ON TAKEOFF. UPON INSPECTION, FOUND ALL EXHAUST ROCKER VALVE ADJUSTING NUTS HAD INSUFFICIENT TORQUE. NR 3 CYLINDER ADJUSTMENT HAD BACKED OFF COMPLETELY. ENGINE HAS 90.9 HOURS SINCE OVERHAUL.Jan 7, 1998 · N49100 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR AU971569Pushrod · loose(AUS) PILOT REPORTED REDUCTION IN RPM AND ROUGH RUNNING IN FLIGHT.INVESTIGATION FOUND THE NO2 CYLINDER EXHAUST PUSHROD END FITTINGS WERE LOOSE, WITH ONE END OF THE PUSHROD SPLAYED AND CRACKED.Dec 21, 1997 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 98ZZZX102Magneto · failedINSTALLED TWO NEW 4381 MAGNETOS ON AN ENGINE REBUILD. LEFT MAG ROTATING MAGNET APPEARS TO HAVE FAILED DUE TO FACTORS UNKNOWN. RESULT IS A BENT SHAFT AT THE IMPULSE COUPLING. NO DAMAGE TO DRIVE GEARS NOTED.Dec 18, 1997 · N94112 · Cessna 152 · Magneto/DistributorSDR 98ZZZX230Oil Filter · bulgedFILTER REPLACED 11-24-97. ENGINE GROUND CHECKED. 0IL PRESSURE NORMAL. ON NEXT FLIGHT, OIL WAS LOST OVERBOARD. ON EXAMINATION, FILTER WAS FOUND ELONGATED AND BULGED. FILTER TAKEN TO HAGGLIN MOTOR FOR INVESTIGATION. CONCLUSION WAS BULGING LIFTED FILTER OFFNov 24, 1997 · N67932 · Cessna 152 · Reciprocating Engine Oil SystemSDR 97ZZZX4879Piston · failedINSPECTION FOUND HALF OF PISTON SKIRT BROKEN AWAY AND MISSING FROM BOTTOM RING GROOVE TO JUST BEFORE EACH PISTON PIN BOSS. OWNER HAD REPORTED AN INCREASE IN OIL COMSUMPTION. VISUAL INSPECTION OF ENGINE WAS OK. CYLINDER COMP ALL CHECKED 70 OVER 80 OR BETTER.Nov 8, 1997 · N64874 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR 97ZZZX4442Piston · damagedA CYLINDER WAS REMOVED DUE TO OIL FOWLING OF THE SPARK PLUGS. A CHUNK OF METAL WAS MISSING FROM THE PISTON. REMOVED THE OTHER 3 CYLINDERS AND FOUND 3 OF THE 4 PISTONS WERE DAMAGED IN THIS WAY. ALL CYLINDER COMPRESSIONS TESTED GOOD, MID 70/80.Oct 1, 1997 · N2452L · Piper PA38112 · Reciprocating Engine Cylinder SectionSDR 97ZZZX3917Coil · failedINSPECTION FOUND BAD COIL IN MAGNETO. MAGNETO IN LEFT POSITION. AIRCRAFT ENGINE WOULD DIE WHEN LEFT MAG WAS SELECTED.Aug 21, 1997 · N68956 · Cessna 152 · Magneto/DistributorSDR CA970902029Tappet · broken(CAN) SEVERE ENGINE VIBRATION IN FLIGHT. AIRCRAFT MADE FORCED LANDING. POST FLIGHT INSPECTION FOUND THE NR2 CYLINDER PUSH ROD LOOSE AND INTAKE PUSH ROD BENT. IT IS SUSPECTED THE TAPPET IS BROKEN. ENGINE WAS RETURNED TO MANUFACTURER.Aug 18, 1997 · Cessna 152 · Reciprocating Engine Power SectionSDR 97ZZZX3629Float · collapsedAIRCRAFT CAME IN FOR ENGINE WORK. REMOVED CARBURETOR, RE-INSTALLED CARBURETOR. ATTACHED FUEL LINES. TURNED ON FUEL. FUEL BOWL NEEDLE JET FAILED TO STOP FUEL. REMOVED CARBURETOR, REMOVED BOWL, FOUND FLOAT COLLAPSED ON BOTH SIDES. NO EXPLANATION FOR CAUSE.Jul 22, 1997 · N2452T · Piper PA38112 · Fuel Control/Reciprocating EnginesSDR 97ZZZX3683Spark Plug · fouledPILOT REPORTED INTERMITTENT ROUGH ENGINE OPERATION EN ROUTE. PILOT HAD FAILED TO LEAN THE ENGINE, CONSEQUENTLY, FOULING ALL 4 LOWER PLUGS. AN OFF-AIRPORT LANDING WAS MADE. NO DAMAGE TO AIRCRAFT. REPLACED LOWER PLUGS AND FLEW AIRCAFT BACK TO AIRPORT WITHOUTJul 7, 1997 · N68452 · Cessna 152 · Spark Plug/IgniterSDR AU970644Coil · open circuit(AUS) MAGNETO COIL OPEN CIRCUITEDJun 11, 1997 · Cessna 152 · Magneto/DistributorSDR 97ZZZX2808Inlet Tube · detachedFOUND THAT WARM AIR INLET TUBE ROLLER FLANGE ON LT SIDE OF CARBURETOR AIRBOX BECOMES WORN AND DISCONNECTED. THIS RENDERS CARBURETOR HEAT AIR SUPPLY INEFFECTIVE. SUBMITTER SUGGESTS ATTACHING TUBE WITH SPOT WELDS.Jun 2, 1997 · N5550L · Cessna 152 · Engine Air Intake SystemSDR 97ZZZX2595Pushrod · mushroomedPILOT REPORTED ENGINE RUNS ROUGH. CHECKED VALVE CLEARANCE AND FOUND NR 2 EXHAUST TO BE .083 INCH. REMOVED NR 2 EXHAUST PUSHROD. PUSHROD FOUND MUSHROOMED AND BALL END WAS LOOSE. SUBMITTER SUGGESTS INSPECTING PUSHRODS FOR LOOSE BALL ENDS ANYTIME THE 100-HOURMay 22, 1997 · N69232 · Cessna 152 · Reciprocating Engine Cylinder SectionSDR CA970612011Bracket · seperated(CAN) WHILE INSPECTING THE VERTICAL FIN, A CRACKLING NOISE WAS NOTED. INSPECTION REVEALED A FINE CRACK BETWEEN THE BRACKETS.May 22, 1997 · Cessna 152 · Vertical StabilizerSDR AU970562Muffler · distorted(AUS) REAR MUFFLER BAFFLE DISTORTED AND PARTIALLY BLOCKING OUTLETMay 17, 1997 · Piper PA38112 · Engine Noise Suppressor
Back to Lycoming O-235-L2C