Lycoming O-320-D2J

Service difficulty reports · 291

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 = 'O320D2J'
  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 2025FA0000713Exhaust Valve · failedEXHAUST VALVE FAILED DUE TO HEAT STRESS, CAUSING LOW COMPRESSION, LOW ENGINE SPEED AND ENGINE VIBRATIONS WHILE AT CRUISE.Oct 10, 2025 · N739DB · Cessna 172N · Reciprocating Engine Cylinder SectionSDR L9QS2024091200711Pulley · damagedL/H FLAP BINDING, CAUSING DAMAGE TO L/H FLAP & L/H FLAP DRIVE PULLEY. REPLACED DAMAGED PARTSSep 12, 2024 · N4913G · Cessna 172N · Trailing Edge Flap Control SystemSDR 2024FA0000702Control Cable · frayedFOUND BOTH AILERON CABLES P/N MC0510105-324 FRAYED AT OUTBOARD PULLEY. AILERON CABLES TSN: 2973.9Sep 9, 2024 · N73707 · Cessna 172N · Aileron Control SystemSDR 2024FA0000685Bearing · brinelledBRINELLED MAIN ROTOR BLADE SPINDLE BEARINGS.TSN: 163.3Sep 4, 2024 · N460LE · Robsin R22BETAII · Main Rotor BladesSDR 8HBR20240909067Gear · damagedCAM GEAR WAS IMPROPERLY INSTALLED/SEATED DURING INITIAL MANUFACTURING WHICH CAUSED EXCESSIVE WEAR AND DAMAGE TO THE CAM GEAR DURING ROTATION AGAINST THE DISTRIBUTOR GEAR. THIS WAS THE FIRST 500HR INSPECTION SINCE MANUFACTURE.Aug 7, 2024 · N90558 · Cessna 172P · Magneto/DistributorSDR 2024FA0000242Control Module · inoperativeAMMETER SHOWING DISCHARGE, NO VOLTAGE TO FIELD.Mar 21, 2024 · N24155 · Cessna 172P · DC Generator-AlternatorSDR 2023FA0000837Pushrod · damagedDURING SB388C, EXHAUST VALVE GUIDE INSPECTION FOUND 4EA PUSH RODS P/N 15F28835-10 & 4EA ROCKERS P/N 17F19357 TO HAVE HEAVY SCUFF - SCORING. ENGINE TT: 2741.1 SINCE FACTORY REBUILT.Dec 16, 2023 · N734BB · Cessna 172N · Reciprocating Engine Power SectionSDR 2023FA0000751Pushrod · damagedDURING INSPECTION FOR ROUGH RUNNING ENGINE, PERFORMED SB388C (EXHAUST VALVE GUIDE INSPECTION) & FOUND 3EA ROCKER ARMS P/N 17F19357 & 3EA PUSH RODS P/N 15F19957-10 WITH MECHANICAL DAMAGE (HEAVY SCUFF - SCORING). ROCKER ARMS & PUSH RODS TSN: 147.9. PREVIOUSLY RENov 9, 2023 · N9012H · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 2023FA0000613Rocker · damagedLYCOMING FACTORY OVERHAULED O-320-D2J, S/N L-17060-39E. DURING ROUTINE MX, SB388C (EXHAUST VALVE GUIDE INSP.) FOUND 4EA PUSH RODS P/N 15F28835-10, 2EA PUSH RODS P/N 15F28835-09, 6EA ROCKER ARMS P/N17F19357, 6EA SOCKETS P/N 15B21319 & 6EA LIFTERS P/N 15B26066 TOct 19, 2023 · N9643Q · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 2023FA0000602Rocker · damagedLYCOMING FACTORY REBUILT - O-320-D2J, S/N RL-20892-39E. DURING ROUTINE MX. SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 3EA HYDRUALIC TAPPETS P/N 15B21319, 3EA HYDRAULIC LIFTERS P/N 15B26066, 3EA ROCKER ARMS P/N 17F19357, 2EA PUSH RODS P/N 15F28835-10 & 1EA POct 18, 2023 · N9936V · Cessna 172M · Engine (Reciprocating)SDR 2023FA0000539Rocker · damagedLYCOMING FACTORY REBUILT O-320-D2J, S/N RL-20764-39E. DURING ROUTINE MX, SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 7EA ROCKER ARMS P/N 17F19357, 1 EA PUSH ROD P/N 15F28835-09, 6EA PUSH RODS P/N 15F28835-10, 7EA TAPPET SOCKETS P/N 15B21319 & 7EA PLUNGERS P/Sep 14, 2023 · N9012H · Cessna 172M · Engine (Reciprocating)SDR 2023FA0000467Rocker · damagedLYCOMING FACTORY REBUILT O-320-D2J, TSN / TT: 2089.1. DURING ROUTINE MX, LYCOMING SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 6EA VALVE PUSH RODS P/N 15F28835-10, 6EA ROCKERS P/N 17F19357 & 1EA TAPPET SOCKET P/N 15B21319 TO HAVE MECHANICAL DAMAGE (HEAVY SCUAug 25, 2023 · N17HZ · Cessna 172M · Engine (Reciprocating)SDR 2023FA0000465Unknown · unknownWE EXPERIENCED TWO CRACKED CYLINDERS WITHIN 55.6 TACH HRS OF EACH OTHER. THE CRACKS WERE IN IDENTICAL LOCATIONS AT THE TOP OF THE CYLINDER BARREL WHERE THE BARREL MEETS THE CYLINDER HEAD. THE CRACKS WERE FOUND BY HIGH CHT INDICATIONS, VISUALLY SEEING EXHAUSTAug 22, 2023 · N733JP · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 2023FA0000246Crankcase · unknownON AUGUST 23, 2022 AN ENGINE EXAMINATION WAS CONDUCTED AT AIR SALVAGE OF DALLAS UNDER FAA OVERSIGHT. A GVI ON THE NUMBER 1 CYLINDER FOUND 4 SMALLER DIAMETER STUDS AND 1 LARGER DIAMETER STUD FRACTURED. THESE DECK STUD BOLTS EXHIBITED FATIGUE FAILURE/INDUCTILE OMay 3, 2023 · N65497 · Cessna 172P · Engine (Reciprocating)SDR 2021FA0000050Lock Tab · looseFOUND LOOSE CARBURETOR LOCK TAB AND FUEL STAIN. NO OPERATIONAL ABNORMALITY WAS NOTED RELATIVE TO THE DISCREPANCY. CARB WAS CHANGED INSTEAD OF REPAIR FOR CONVENIENCE.Jan 20, 2021 · N6519 · Cessna 172P · Fuel Control/Reciprocating EnginesSDR 2020FA0000440Cylinder · crackedNUMBER ONE CYLINDER BARREL SEPARATION.Oct 2, 2020 · N27GF · Cessna 172P · Reciprocating Engine Cylinder SectionSDR 2020FA0000318Cylinder · separatedINSPECTION OF THE ENGINE FOUND FORWARD RIGHT CYLINDER SPLIT MIDWAY IN TWO SECTIONS EXPOSING PISTON AND COMBUSTION CHAMBER LEAVING 1 /1/2 INCH. ROCKER ARM TUBES ALSO SEPARATED FROM ENGINE BLOCK. CYLINDER ASSEMBLY PN: SL32006W-A20P WAS INSTALLED NEW ON LAST OVJun 30, 2020 · N555CV · Cessna 172M · Reciprocating Engine Cylinder SectionSDR BQVD2020042400000Exhaust Valve · stuckTACH TIME: 7661.5 POST FLIGHT INSPECTION OF COWL, OIL LEAK DISCOVERED. MAINTENANCE INVESTIGATED AND DISCOVERED #2 CYLINDER EXHAUST VALVE PUSHROD TUBE BROKEN IN TWO PIECES AND PUSHROD BENT. CYLINDER WAS REMOVED. EXHAUST VALVE WAS FOUND TO BE STUCK AND HAD MAApr 20, 2020 · N65628 · Cessna 172P · Reciprocating Engine Cylinder SectionSDR 2020FA0000095Muffler · crackedPILOT SMELLED BURNING OIL IN CABIN, TURNED OFF CABIN HEAT AND SMELL WENT AWAY. INSPECTION FOUND MUFFLER CRACKED AT TAILPIPE ABOUT 3/4 AROUND TAILPIPE TO MUFFLER. MUFFLER WAS A NEW REPLACEMENT FROM AEROSPACE WELDING INSTALLED ON 4/13/3018 3125.8 TACH, REMOVEDJan 29, 2020 · N733TP · Cessna 172N · Engine Noise SuppressorSDR CA190808002Impulse Coupling · failed(CAN) DURING PRE-TAKEOFF GROUND RUN THE PILOT REPORTED A "DEAD RH MAG". MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE IMPULSE COUPLING ON THE RH MAGNETO HAD BROKEN WHICH CAUSED A SHIFT IN MAGNETO-TO-ENGINE TIMING CAUSING THE ENGINE TO NOT RUN ON THE RH MAGNJul 31, 2019 · Cessna 172M · Magneto/DistributorSDR CA190429020Shutoff Valve · contaminated(CAN) ON A TRAINING FLIGHT IT WAS REPORTED THAT ON THE TAKE-OFF ROLL THE ENGINE QUIT AND THE AIRCRAFT WAS ABLE TO COAST OFF THE RUNWAY TO A TAXIWAY. THE AIRCRAFT WAS RE-STARTED AND TAXIED BACK TO THE HANGAR. MAINTENANCE DID A THOROUGH RUN-UP ON THE AIRCRAFT ANApr 25, 2019 · Cessna 172P · Fuel Selector/Shut-Off ValveSDR CA190401014Bolt · missing(CAN) LOWER NOSE LANDING GEAR ATTACH COLLAR (CAP) HAD ONE OF THE 2 ATTACH BOLTS MISSING AND A GAP WAS EVIDENT ON THE MATING SURFACE ON ONE SIDE. THE FIREWALL, CAP, NOSE GEAR, AND ATTACH BRACKETS WERE INSPECTED FOR DAMAGE WITH NONE FOUND. THE CAP RETENTION HARDApr 1, 2019 · Cessna 172N · Fuselage, Landing Gear Attach FittingsSDR CA190325005Radio · malfunctioned(CAN) WHILE ON FINAL IN THE CIRCUIT, AIRCRAFT X-XXXX LOST RADIO RECEPTION. STUDENT HAD PREFORMED A GO-AROUND, ENTERED TRANSPONDER SQUAWK CODE 7600 AND CALLED TOWER BY CELL PHONE. THE STUDENT RECEIVED LANDING CLEARANCE FROM TOWER AND LANDED WITHOUT INCIDENT. AIMar 21, 2019 · Cessna 172N · Data Transmission Auto CallSDR CA190312013Line · loose(CAN) ACCELERATOR PUMP LINE IN CARBURETOR CAME LOOSE AND STOPPED THROTTLE FROM CLOSING ALL THE WAY. (TC# 20190312013)Mar 12, 2019 · Cessna 172N · Fuel Control/Reciprocating EnginesSDR CA190311024Switch · melted(CAN) DURING THE FLIGHT THE PILOT REPORTED SMOKE FROM UNDER THE INSTRUMENT PANEL. UPON INSPECTION IT WAS DISCOVERED THE LANDING LIGHT SWITCH HAD OVERHEATED, PARTIALLY MELTING. THESE SWITCHES HAVE A MANDATORY REPLACEMENT LIFE OF 48 MONTHS. THE FAILED SWITCH WAMar 6, 2019 · Cessna 172N · Exterior LightingSDR CA190201017Alternator · inoperative(CAN) AT CRUISE RETURNING TO BASE CREW NOTICED ALTERNATOR DROPPED OFF. CREW CHECKED SWITCH AND CIRCUIT BREAKER. CHECKED OK. ON FINAL INTO CYBW INTERMITTENT FLAPS, RADIO AND LIGHT FAILURES. UPON INVESTIGATION AND INSPECTION THE POWER TERMINAL TO THE ALTERNATOR Jan 31, 2019 · Cessna 172N · DC Generator-AlternatorSDR CA180207025Limit Switch · failed(CAN) PILOT NOTED THAT THE FLAPS WOULD NOT RETRACT FROM 10 DEGREES AFTER LANDING. AIRCRAFT WAS BROUGHT INTO HANGAR AND FLAP SYSTEM WAS CHECKED. IT WAS DISCOVERED THAT THE FLAP UP LIMIT SWITCH P/N S1906-1 ON THE FLAP POSITION SELECTOR HAD FAILED. AME DECIDEDFeb 6, 2018 · Cessna 172N · Trailing Flap Position Indicating SystemSDR CA180116016Valve Seat · worn(CAN) DURING HOT CYLINDER COMPRESSION TEST OF ENGINE FOUND NR 3 CYLINDER TO HAVE 0 COMPRESSION. DURING TROUBLESHOOTING, FOUND EXHAUST VALVE TRAIN TO HAVE ZERO CLEARANCE BETWEEN ROCKER ARM AND VALVE STEM AT TOP DEAD CENTER. REMOVED CYLINDER TO INSPECT AND FOUJan 12, 2018 · Cessna 172P · Reciprocating Engine Cylinder SectionSDR 2017FA0000503O-Ring · wornAIRCRAFT EXPERIENCED LOSS OF LT BRAKES DURING TAXI TO RUNWAY. PILOT WAS ABLE TO STOP WITH OTHER BRAKE AND ELECTED TO HAVE AIRCRAFT TOWED TO PARKING. NO PRESSURE WAS EXPERIENCED WITH OPERATION OF BRAKE. REMOVED MASTER CYLINDER AND FOUND AN O-RING WAS WORN FLATSep 11, 2017 · N52364 · Cessna 172P · Master Cylinder/Brake ValveSDR 8HBR20170710005Cylinder · crackedPILOT REPORTED ROUGH RUNNING ENGINE. THE NR 1 CYLINDER WAS FOUND CRACKED FOUR INCHES ACROSS THE INTAKE VALVE.Jul 7, 2017 · N65259 · Cessna 172P · Reciprocating Engine Cylinder SectionSDR 2017FA0000181Wire Harness · defectiveBAD MAG DROP. UNABLE TO BURN OFF. LOSS OF RPM ON TAKEOFF ROLL. DECIDED TO REPLACE IGNITION HARNESS BY PROCESS OF ELIMINATION. REPLACEMENT CORRECTED THE ISSUE.May 9, 2017 · N64875 · Cessna 172P · Ignition Harness (Distribution)SDR 2016FA0000394Battery Pack · explodedONE OF OUR AIRCRAFT WAS INSTALLED WITH ELT, MODEL AK-451 ON OCTOBER 2010. ON MARCH 15, 2016 WE REPLACED THE BATTERY. ON JULY 26, 2016 AIRCRAFT FLEW FOR TRAINING UNTIL 14:00 HOURS LOCAL TIME, AIRCRAFT WAS PARKED AND A TRAINEE AND PILOT INSTRUCTOR LEFT THE AIRJul 26, 2016 · Cessna 172P · Emergency Locator BeaconSDR CA160221003Control Cable · frayed(CAN) BOTH AILERON DIRECT CABLES FRAYED AT PULLEYS. NORMAL WEAR.Feb 13, 2016 · Cessna 172N · Aileron Control SystemSDR CA160221004Control Cable · frayed(CAN) BOTH RUDDER CABLES FOUND FRAYED AT PULLEYS.Feb 13, 2016 · Cessna 172N · Rudder Control SystemSDR CA160211008Tube · failed(CAN) STUDENT AND INSTRUCTOR WERE TAXING TO RUNWAY WHEN STUDENT NOTICED STEERING FELT STIFF. INSTRUCTOR TOOK OVER AND MOVED ACFT OFF TO SIDE OF TAXIWAY. INSTRUCTOR SHUTDOWN ACFT, GOT OUT AND FOUND NOSE WHEEL TIRE FLAT.Feb 11, 2016 · Cessna 172N · TireSDR CA160205007Heater · smoke(CAN) DURING TAXI FOR TAKOFF, PILOT REPORTED SMOKE IN THE COCKPIT AND REQUESTED RETURN TO BLOCKS. SUBSEQUENT INSPECTION COULD FIND NO DEFECT WITH WIRING OR WITH TUBING IN THE ACFT AND THE ELECTRICAL AND HEATING SYS WAS GROUND CHECKED SERVICEABLE. THE ACFT WAFeb 5, 2016 · Cessna 172N · Heating SystemSDR CA151217004Magneto · out of limits(CAN) MAGNETO TIMING ADVANCED 5 DEGREES IN 50 HRS SINCE 500 HR INSPECTION.Dec 10, 2015 · Cessna 172N · Magneto/DistributorSDR CA151217005Magneto · not reported(CAN) MAGNETO TIMING ADVANCED 3 DEGREES IN 50HRS SINCE 500HR INSP.Dec 10, 2015 · Cessna 172N · Magneto/DistributorSDR CA151119011Axle · cracked(CAN) WHILE DOING A ROUTINE TIRE REPLACEMENT, UPON REMOVAL OF THE TIRE ASSY FROM THE LT AXLE, THE AXLE WAS CLEANED AND INSPECTION REVEALED WHAT LOOKED LIKE A CRACK OR INCLUSION ON THE AXLE AT THE END OPPOSITE WHERE THE COTTER PIN/NUT SECURE THE WHEEL ASSY. ITNov 18, 2015 · Cessna 172P · Main Landing Gear Strut/Axle/TruckSDR CA151109007Rib · cracked(CAN) DURING ROUTINE MAINTENANCE, UPON INSPECTION AT 100 HR INSPECTION IT WAS FOUND THAT THE BULKHEAD ASSY, PN 0513363-23, TUNNEL LT RIB WAS CRACKED WHERE THE RUDDER BEARING ASSY FOR THE RUDDER PEDAL TORQUE TUBES ATTACHES. THE CRACK WAS LESS THAN .5" BY THE BNov 6, 2015 · Cessna 172P · Rudder StructureSDR 2015FA0000461Carburetor · looseFOUR SCREWS ON THE CARBURETOR CAME LOOSE, CAUSING THE ENGINE TO RUN ROUGH AND THE PILOT MADE AN EMERGENCY LANDING, WHICH RESULTED IN AN ACCIDENT.Sep 23, 2015 · N65191 · Cessna 172P · Fuel Control/Reciprocating EnginesSDR CA150707008Magneto · out of adjust(CAN) MAGNETO TIMING HAD DRIFTED FROM 25 TO 32 DEGREES BTDC AFTER ONLY 53.9HRS SINCE 500HR INSPECTION.Jun 23, 2015 · Cessna 172P · Magneto/DistributorSDR CA150611007Magneto · malfunctioned(CAN) MAGNETO WOULD NOT TIME PROPERLY AT 490 HRS TTSN. SUSPECT CARBON TRACKING OR OTHER INTERNAL FAILURE.May 28, 2015 · Cessna 172N · Magneto/DistributorSDR CA150611006Magneto · failed(CAN) MAGNETO FAILED FUNCTION CHECK AT ONLY 200.5 HRS TTSN. MAGNETO SHOWED SIGNS OF INTERNAL CARBON TRACKING.May 27, 2015 · Cessna 172P · Magneto/DistributorSDR CA150511012Tube · broken(CAN) THE ACCELERATOR TUBE BROKE & BECAME JAMMED IN BETWEEN THE BUTTERFLY VLV & HOUSING OF THE CARB. THE PILOT WAS UNABLE TO ADJUST THE THROTTLE CONTROL. THE TUBE EVENTUALLY DISLODGED & WAS SUCKED INTO THE INTAKE OF THE ENG CAUSING PARTIAL POWER LOSS.May 7, 2015 · Cessna 172N · Fuel Control/Reciprocating EnginesSDR CA150505003Magneto · out of adjust(CAN) MAGNETO TIMING OUT BY 5 DEGREES ONLY 101.5 HRS AFTER 500 HR INSPECTION.May 4, 2015 · Cessna 172N · Magneto/DistributorSDR CA150501004Crankcase · cracked(CAN) CRANKCASE HALVES FOUND TO BE CRACKED AT NR 2 & NR 4 LOWER FORWARD THRU STUD REINFORCMENT BOSSES.Apr 29, 2015 · Cessna 172P · Reciprocating Engine Power SectionSDR CA150417006Nut · separated(CAN) CROSSWIND HARD LANDING ON NOSE CAUSING NUT TO SEPARATE, OPENING OF THE FORK, WHEEL FOUND SHIFTER. PART SEND FOR NDT. NO VISIBLE DAMAGE EXCEPT SCRATCH ON 1/2 WHEEL HUB.Apr 13, 2015 · Cessna 172P · Nose/Tail Landing GearSDR CA150310010Spring · broken(CAN) PILOT REPORTED LOUD BANG ON TAXI IN FROM FLIGHT AND RUDDER FELT LOOSE. RUDDER CONTROL SYSTEM INSPECTED FOUND RUDDER RETURN SPRING BROKEN ON LT RUDDER BAR. NEW SPRING WAS INSTALLED RUDDER FEELS NORMAL WHEN MOVED. NO IDEA HOW OLD THE OLD SPRING WAS. RT Mar 9, 2015 · Cessna 172P · Rudder Control SystemSDR CA150316009Points · failed(CAN) MAGNETO POINTS FAILED TO OPEN DURING ROUTINE TIMING CHECK AT 253 HRS SINCE 500HR INSPECTION.Mar 2, 2015 · Cessna 172N · Magneto/Distributor
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