Lycoming O-320-H2AD

Service difficulty reports · 326

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 = 'O320H2AD'
  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 CA960418015Breaker Points · worn(CAN)ON THE 100 HOUR INSPECTION, BOTH MAGNETOS HAD BEEN CHECKED FOR CONDITION AND TIMING AS CALLED FOR IN THE CESSNA INSPECTION PROGRAM AND A POST INSPECTION RUN-UP DONE WITH ALL ENGINE PARAMETERS FOUND NORMAL. ON THE FIRST FLIGHT AFTER INSPECTION, A POWER LOSApr 9, 1996 · Cessna 172N · Magneto/DistributorSDR CA960412002Gear · sheared teeth(CAN)IN CRUISE, ENGINE SUDDENLY RAN ROUGH AND RPM DROPPED. MAG CHECK INDICATED LEFT MAG DEAD. MAGNETO REMOVED FOR TEST. PLASTIC GEAR HAD 12 TEETH SHEARED OFF. THIS MAG HAD BEEN OVERHAULED BY REPAIR STATIONUT2R226L.Mar 28, 1996 · Cessna 172N · Magneto/DistributorSDR 96ZZZX2064Contact Assy · looseENGINE FAILED TO MAKE FULL STATIC RPM ON GROUND. UPON FURTHER INSPECTION, IT WAS DETERMINED TO BE A MAGNETO PROBLEM. UPON OPENING MAG COVER, BOTH SETS OF CONTACTS WERE FOUND TO BE LOOSE. THE CONTACT ASSY SCREW (NOT MOUNTING SCREWS) WERE DETERMINED TO BE LOOMar 27, 1996 · N739NT · Cessna 172N · Magneto/DistributorSDR AU960348Line · separated(AUS) PITOT SYSTEM PRESSURE LINE SEPARATED FROM CONNECTION TO HOURMETER AIRSPEED SWITCH - SUSPECT LINE DISCONNECTED DURING REFITMENT OF TACH INDICATOR DURING AD/INST/9 CALIBRATION CHECK WHICH WAS CARRIED OUT FOLLOWING PITOT/STATIC CALIBRATION CHECKMar 14, 1996 · Cessna 172N · Pitot/Static SystemSDR CA960429003Valve Cover · worn(CAN) AIRCRAFT LOST POWER ON TAKEOFF ROLL. THE TAKEOFF WAS ABORTED. WHEN THE FUEL SELECTOR WAS MOVED THE POWER WAS RESTORED. INSPECTION OF THE VALVE SHOWED WEAR TRACKS BETWEEN THE DETENT LOCKING HOLES SO THAT POSITIONING OF THE SELECTOR HANDLE WAS NOT IN THE PMar 1, 1996 · Cessna 172N · Fuel Selector/Shut-Off ValveSDR CA960429004Exhaust Valve · sticking(CAN)PERFORMING CESSNA SEB92-21 (LYC SB388B), #4 CYLINDER EXHAUST VALVE TO GUIDE CLEARANCE BELOW SPECIFIED. REWORKED IN ACCORDANCE WITH LYCOMING SI 1425. SB WAS NOT DUE FOR ANOTHER 170 HOURS.Feb 26, 1996 · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 96ZZZX1710Geartooth · brokenREMOVED MAGNETO DUE TO ROUGH ENGINE. FOUND A TOOTH BROKEN OFF OF LEFT DISTRIBUTOR GEAR. MAGNETO WAS ON A LYCOMING FACTORY OVERHAUL. MAGNETO WAS OVERHAULED BY ELECTRO SYSTEMS, INC.Feb 14, 1996 · N1465E · Cessna 172N · Magneto/DistributorSDR AU960389Door Post · cracked(AUS) LH AND RH DOOR POST CRACKED FROM RELIEF RADIUS AT FLOOR LEVEL TO HIGH SHEAR FASTENER HOLE ON LH POST AND EXTENDING APPROXIMATELY7.937MM (0.3125IN) PAST HIGH SHEAR FASTENER HOLE ON RH POST - MAXIMUM CRACK LENGTH OF 31.75MM (1.25IN) EXTENDING OUTBOARD FROJan 15, 1996 · Cessna 172N · Fuselage Miscellaneous StructureSDR AU960038Brush · worn(AUS) ALTERNATOR BRUSHES WORN EXCESSIVELY - PIGTAIL JUNCTION WORN INTO SLIP RINGJan 12, 1996 · Cessna 172N · DC Generator-AlternatorSDR AU960039Door Post · cracked(AUS) AFT DOOR POST ASSEMBLY CRACKED IN AREA OF INNER RELIEF AT FS 65.3 TOWARDS OUTBOARD LANDING GEAR HOUSING FASTENERSJan 12, 1996 · Cessna 172N · Fuselage Miscellaneous StructureSDR 96ZZZX1253Magneto · teeth shearedAT 702 HOURS SINCE MAGNETO OVERHAUL, A TOOTH ON THE GEAR ASSY SHEARED, AND, SUBSEQUENTLY, SHEARED THE MAJORTIY OF THE REMAINING TEETH ON THAT GEAR AS WELL AS THE OTHER GEAR ASSY. REGARDING THE OVERHAUL PROCEDURES, THE GEAR ASSYS ARE NOT A MANDATORY REPLACEMENDec 28, 1995 · N734PF · Cessna 172 · Magneto/DistributorSDR 96ZZZX371Line · loosePILOT REPORTED SMOKE IN COCKPIT AFTER APPLYING CABIN HEAT. REMOVED COWLING AND INSPECTED MUFFLER ASSEMBLY. SMALL OIL STAIN ON MUFFLER SHROWD. FOUND OIL RETURN LINES WERE SLIGHTLY 'WET' WITH OIL. TIGHTENED OIL RETURN LINE CLAMPS. WASHED DOWN ENGINE AND MUFDec 22, 1995 · N738UD · Cessna 172N · Reciprocating Engine Oil SystemSDR 97ZZZX3328Magneto · teeth strippedTEETH ON DISTRIBUTOR GEAR WERE SHEARED CAUSING A VERY SEVERE MAG DROP ON RIGHT MAGNETO SIDE. A MAGNETO LOCKING TOOL WAS NOT USED DURING INSTALLATIONS AFTER AD CHECKS. THIS IS A SINGLE POINT DUAL MAGNETO.Dec 11, 1995 · N5855E · Cessna 172N · Magneto/DistributorSDR 97ZZZX3333Magneto · teeth shearedTEETH ON DISTRIBUTOR GEAR WERE SHEARED CAUSING A SEVERE MAG DROP ON LEFT MAGNETO SIDE. CAUSE UNKNOWN. A MAGNETO LOCKING TOOL WAS NOT USED DURING INSTALLATIONS AFTER AD COMPLIANCES. THIS IS A SINGLE POINT DUAL MAGNETO.Dec 11, 1995 · N733SW · Cessna 172N · Magneto/DistributorSDR 95ZZZX6573Valve · stuckSOME POWER LOSS WAS NOTED AFTER TAKEOFF WHEN EXHAUST VALVE STUCK. SUBMITTER SUGGESTS LYCOMING SERVICE BULLETINS BE COMPLIED WITH.Nov 7, 1995 · N738BF · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 95ZZZX5603Distributor Gear · teeth failedFOUND RIGHT DISTRIBUTOR GEAR WITH 21 OF 53 TEETH MISSING. HELICAL SPRING MISSING FROM NR 1 TOWER (RIGHT SIDE) OF THE DISTRIBUTOR BLOCK. EVIDENCE OF HEAVY ARCING INSIDE NR 1 TOWER BECAUSE OF MISSING SPRING. THIS DUAL MAGNETO IS AN ELECTRO SYSTEM, INC., OVERHSep 6, 1995 · N6583D · Cessna 172 · Magneto/DistributorSDR 95ZZZX6806Points · failedINSPECTED MAG, FOUND POINTS NOT LUBRICATED AND PLASTIC PUSH ARMS WORN OFF. POINTS WOULD NOT OPEN AND BOTH LEFT AND RIGHT SIDES OF MAG WERE NOT OPERATIONAL.Sep 5, 1995 · N737HK · Cessna 172N · Magneto/DistributorSDR 95ZZZX5751Magneto · points failedCOMPLETE ENGINE FAILURE DUE TO MAG POINTS ATTACH COMING LOOSE. SUBMITTER RECOMMENDS BETTER MEANS OF ATTACHING POINT TO MAGNETO.Jul 12, 1995 · N4829G · Cessna 172N · Magneto/DistributorSDR 95ZZZX3680Carburetor Jet · blockedTEAR DOWN OF CARBURETOR TO IDENTIFY REASON FOR FAILURE. MAIN JET ASSEMBLY WAS FOUND PARTIALLY BLOCKED. BLOCKAGE REMOVED USING A .040 INCH PIECE OF SAFETY WIRE PASSED THROUGH THE OUTLET END OF THE MAIN JET ASSEMBLY.Jun 19, 1995 · N5415J · Cessna 172N · Fuel Control/Reciprocating EnginesSDR 95ZZZX2725Retain Stud · backed outAFTER APPROXIMATELY 5 MINUTES IN CRUISE FLIGHT, THE PILOT REPORT A LOSS OF ENGINE POWER AND A SEVERE ROUGHNESS AND AN AIRPORT LANDING WAS MADE WITHOUT INCIDENT. INVESTIGATION REVEALED NR 4 CYLINDER INTAKE VALVE PUSH ROD AND SHROUD WERE BURNED AND LEAKING OIL.May 18, 1995 · N734XC · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 95ZZZX2657Cylinder · rings brokenDURING 100-HOUR INSPECTION, COMPRESSION ON CYLINDERS 2 AND 4 LOW. REMOVED CYLINDERS. BROKEN AND MISSING PIECES OF RING. OIL SAMPLE SENT OUT. OVERHAUL FACILITY SAYS TAPPET DAMAGE. INSPECTED SAME AND FOUND NR 1 CYLINDER EXHAUST TAPPET WITH HEAVY DAMAGE. ENApr 21, 1995 · N3065E · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 95ZZZX2719Distributor Gear · brokenON TWO OCCASIONS, THE LARGE DISRIBUTOR GEAR HAS SHED GEAR TEETH DURING NORMAL OPERATIONS. THE FIRST SET OF GEARS SHED 11 TEETH AND THE SECOND SET SHED 2 TEETH. THE FIRST SET HAD 500 HOURS SINCE OVERHAUL AND THE SECOND SET HAD 303.5 HOURS SINCE OVERHAUL. INDApr 11, 1995 · N4669G · Cessna 172 · Magneto/DistributorSDR 97ZZZX8Piston Pin · brokenENGINE FAILED IN CRUISE FLIGHT DUE TO BROKEN PISTON PIN IN NR 3 CYLINDER. ENGINE DESTROYED, CASES BROKEN, RODS BENT, PISTONS CRACKED. AIRCRAFT SUCCESSFULLY LANDED ON COUNTRY ROAD NEAR AIRPORT. SUPERIOR AIR PARTS WARRANTED ENGINE.Mar 3, 1995 · N4773E · Cessna 172N · Reciprocating Engine Cylinder SectionSDR 95ZZZX1289Cam Assy · crackedMAGNETO WAS OVERHAULED AND IMPULSE COUPLING WAS THE NEW SNAP RING TYPE AS SPECIFIED IN TCM MSB NR 645. MAG WAS INSTALLED ON ENGINE. ENGINE FIRED SEVERAL TIMES, BUT DID NOT START. THEN ENGINE WOULD NOT FIRE AT ALL. NO IMPULSE CLICKING NOISE WAS NOTED. MAG Mar 2, 1995 · Cessna 172 · Magneto/DistributorSDR 95ZZZX816Control · brokeWHILE IN-FLIGHT, PILOT EXPERIENCED SUDDEN LOSS OF POWER. PILOT ACTUATED CARBURETOR HEAT, SWITCHED FUEL TANKS WITH NO RESULTS. PILOT WAS FORCED TO LAND THE 172 ON THE HIGHWAY. PILOT AND PLANE RECEIVED NO INJURIES OR DAMAGE. A MECHANIC DISCOVERED THAT THE MIFeb 9, 1995 · N4818D · Cessna 172N · Mixture ControlSDR 95ZZZX739Pushrod · bentDURING FLIGHT, PILOT EXPERIENCED SUDDEN LOSS OF POWER AND ENGINE ROUGHNESS. AN UNEVENTFUL AIRPORT LANDING WAS MADE. INSPECTION BY MAINTENANCE PERSONNEL REVEALED NR 3 CYLINDER INTAKE PUSHROD BENT. OIL ADDITIVE, LW16702, ADDED 2 HOURS PREVIOUSLY. ENGINE MAJOJan 22, 1995 · N6468F · Cessna 172N · Reciprocating Engine Cylinder Section
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