Cessna 172M

Service difficulty reports · 589

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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 aircraft_model_key = '172M'
  ORDER BY difficulty_date DESC"

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SDR 96ZZZX604Control Cable · failedON NOVEMBER 11, 1995, AIRCRAFT EXPERIENCED WIND GUSTS AS HIGH AS 70 MPH FROM THE SOUTHEAST. THE AIRPLANE WAS TIED DOWN HEADING 330 DEGREES AND BOTH THE RUDDER GUST LOCK AND THE PIN IN THE YOKE WERE IN PLACE. THE NEXT DAY, THE RIGHT AILERON WAS DROOPING SLIGHJan 5, 1996 · N21258 · Cessna 172M · Aileron Control SystemSDR 96ZZZX70Rod · bentDURING FIRST TOUCH AND GO LANDING, WHEN FLAPS LOWERED, ABNORMAL CONTROL RESPONSE NOTED. LT FLAP HAS MORE EXTENSION THAN RT FLAP. ABORTED AND MADE NEW APROACH TO A LANDING. FOUND FLAP CONTROL SYSTEM HAD A BENT PULLEY BRACKET WHERE ROD (ALSO BENT) IS ATTACHEDDec 4, 1995 · N13923 · Cessna 172M · Trailing Edge Flap Control SystemSDR 96ZZZX69Pulley · bracket bentDURING FIRST TOUCH AND GO LANDING, WHEN FLAPS LOWERED, ABNORMAL CONTROL RESPONSE NOTED. LT FLAP HAS MORE EXTENSION THAN RT FLAP. ABORTED AND MADE NEW APPROACH TO A LANDING. FOUND FLAP CONTROL SYSTEM HAD A BENT PULLEY BRACKET WHERE ROD (ALSO BENT) IS ATTACHEDec 4, 1995 · N13923 · Cessna 172M · Trailing Edge Flap Control SystemSDR 96ZZZX596Strap Assy · brokenAFTER REPAIRING A DEFECTIVE FUEL LINE TO CORRECT A LEAK, FUEL WAS PUT INTO TANK. A LEAK WAS STILL NOTED. REMOVED TANK AND FOUND BOTH STRAPS BROKEN WHERE THEY ARE FASTENED TO THE OUTBOARD STRAPS. A CRACK WAS FOUND ON THE WELDED BOSS FOR THE FINGER STRAINER/ODec 1, 1995 · N19992 · Cessna 172M · Fuel StorageSDR 96ZZZX711Lock Plate · missingINSTALLATION PARTS ARE NOT COMPATIBLE. CESSNA AIR BOX SUPPORT 0555216-16 ATTACHES TO FORWARD ALTERNATOR BRACKET BOLT. THIS PREVENTS INSTALLATION OF LYCOMING LOCK PLATE 73383. APPARENTLY, THERE IS NO SB THAT RESOLVES THIS ISSUE. THIS PROBLEM RELATES TO REPORNov 28, 1995 · N9608H · Cessna 172M · Alternator-Generator DriveSDR 96ZZZX595Line · leakFUEL DYE STAINS NOTICED ON UNDERSIDE OF RIGHT WING AT ROOT. CLEANED AREA AND CHECKED FOR LEAK. NO LEAK NOTED. AFTER PLANE SAT FOR 6 TO 8 HOURS, MORE FUEL STAINS NOTED. FOUND SMALL PINHOLE, .75 INCH, FROM TANK CONNECTION ON THE SOLID LINE. UPON PROBING WITNov 28, 1995 · N19992 · Cessna 172M · Aircraft Fuel Distribution SystemSDR 95ZZZX6613Pump · failedENGINE LOST OIL PRESSURE ON DEPARTURE AND RETURNED TO THE AIRPORT. NO INCIDENT OCCURRED. ENGINE WOULD NOT MAKE FULL RPM. PROPELLER STOPPED WHEN POWER REDUCED TO IDLE. SUBMITTER STATED ENGINE WAS OPERATED MOST OF ITS LIFE WITHOUT AN OIL FILTER. RECOMMEND MNov 13, 1995 · N21329 · Cessna 172M · Reciprocating Engine Oil SystemSDR 95ZZZX6433Flap Motor · bad groundWHILE CLEARING THE RUNWAY AFTER TRAINING FLIGHT, FLAPS WERE SELECTED UP. THE FLAPS FAILED TO OPERATE AND THE FLIGHT CREW REPORTED SMELLING 'SMOKE'. INVESTIGATION REVEALED A BAD GROUND ON THE FLAP MOTOR AND THE ALTERNATOR CIRCUIT BREAKER WAS FOUND DAMAGED BY Nov 9, 1995 · N1393U · Cessna 172M · Trailing Edge Flap ActuatorSDR 96ZZZX176Coil · defectiveDURING RUN-UP, RT MAG DROP WAS EXCESSIVE OR ENGINE WOULD STOP. MAGNETO WAS DISASSEMBLED AND POINTS AND CONDENSOR REPLACED DUE TO WORN CONDITION. COIL WAS TESTED AND THE SECONDARY WAS FOUND TO HAVE APPROXIMATELY 5 MILLION OHMS RESISTANCE. THE SPEC IS 13,000-Oct 31, 1995 · N19992 · Cessna 172M · Magneto/DistributorSDR 95ZZZX6749Mount · part missingDURING OIL CHANGE, FOUND THE CARBURETOR AIR BOX BROKEN FROM THE CARBURETOR. WHILE REMOVING AIR BOX, A 10 INCH PIECE OF THE LOWER ENGINE MOUNT WAS FOUND MISSING. IT DOES NOT SHOW SIGNS OF AN OLD CRACK AS BOTH SIDES ARE SHINEY. SUSPECT POSSIBLY A HARD NOSE WHOct 12, 1995 · N560Z · Cessna 172M · Engine Mount SectionSDR 95ZZZX5608Skin · crackedDURING AN ANNUAL INSPECTION, FOUND THE CENTER SECTION OF THE HORIZONTAL STABILIZER WAS DEFORMED AND CRACKED. IT IS POSSIBLE THAT MISHANDLING DURING GROUND HANDLING IS THE CAUSE. CESSNA HAS A HEAVY DUTY CENTER SECTION SPAR AND SKIN REPLACEMENT.Sep 19, 1995 · N1261U · Cessna 172M · Horizontal Stabilizer, Plate/SkinSDR 95ZZZX5607Spar · crackedDURING AN ANNUAL INSPECTION, FOUND THE CENTER SECTION OF THE HORIZONTAL STABILIZER WAS DEFORMED AND CRACKED. IT IS POSSIBLE THAT MISHANDLING DURING GROUND HANDLING IS THE CAUSE. CESSNA HAS A HEAVY DUTY CENTER SECTION SPAR AND SKIN REPLACEMENT.Sep 19, 1995 · N1261U · Cessna 172M · Horizontal Stabilizer, Spar/RibSDR 95ZZZX5649Key · brokenPILOT REPORTED THE ENGINE RUNS ROUGH AT LOW POWER SETTING ONLY. TROUBLESHOT AND FOUND ONE OF THE NR 3 CYLINDER EXHAUST VALVE KEYS BROKEN IN TWO AND THE VALVE STEM WAS DESTROYED IN THE KEY AREA.Sep 7, 1995 · N6814H · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 95ZZZX5742Bracket · crackedANNUAL INSPECTION FOUND BOTH RT AND LT UPPER AILERON BRACKETS HAVE .50 INCH CRACK AT BEND IN BRACKET. CRACK EXTENDS FROM MIDDLE OF BEND OUTWARD. SUBMITTER SUGGESTS CAUSE OF EXCESSIVE TORQUE ON BELLCRANK STOP BUSHING BOLTS. RECOMMEND ALL INSPECTORS PAY SPECIAug 25, 1995 · N193JS · Cessna 172M · AileronsSDR 95ZZZX5741Bracket · crackedANNUAL INSPECTION FOUND BOTH RT AND LT UPPER AILERON BRACKETS HAVE .50 INCH CRACK AT BEND IN BRACKET. CRACK EXTENDS FROM MIDDLE OF BEND OUTWARD. SUBMITTER SUGGESTS CAUSE OF EXCESSIVE TORQUE ON BELLCRANK STOP BUSHING BOLTS. RECOMMEND ALL INSPECTORS PAY SPECIAug 25, 1995 · N193JS · Cessna 172M · AileronsSDR 95ZZZX4200Valve · defectiveINSPECTION OF THERMOSTATIC VALVE ON 5 ENGINES FOUND 3 NOT SERVICEABLE.Aug 2, 1995 · N91712 · Cessna 172M · Engine Oil Temperature RegulatorSDR 95ZZZX4475Breather Tube · malfunctionCRANKCASE BREATHER TUBE MALFUNCTION. STOCK 172M BREATHER TUBE HAD SLIPPED DOWN IN CLAMPS. LOWER CLAMP COVERED 'WHISTLE HOLE'. THIS COULD RESULT IN BREATHER TUBE BLOCKAGE WITH ICE DURING FLIGHT AT LOW OUTSIDE AIR TEMPERATURE. SAME PROBLEM WAS ADDRESSED IN AAug 1, 1995 · N9608H · Cessna 172M · Engine Oil System (Airframe Furnished)SDR 95ZZZX4017Camshaft · wearCAMSHAFT WAS PURCHASED FROM AIR SUPPORT INTERNATIONAL, INC. CAMSHAFT WAS OVERHAULED AT AIRCRAFT SPECIALTIES SERVICES, FAA REPAIR STATION DD2R764K. CAMSHAFT SHOWED SIGNS OF PREMATURE WEAR. SUBMITTED BY EXECUTIVE FLYERS 141 SCHOOL LP8S302Q.Aug 1, 1995 · N61992 · Cessna 172M · Reciprocating Engine Power SectionSDR 95ZZZX4012Camshaft · wearCAMSHAFT WAS PURCHASED FROM AIR SUPPORT INTERNATIONAL, INC. CAMSHAFT WAS OVERHAULED AT AIRCRAFT SPECIALTIES SERVICES FAA REPAIR STATION DD2R764K. CAMSHAFT SHOWED SIGNS OF PREMATURE WEAR. SUBMITTED BY EXECUTIVE FLYERS 141 SCHOOL LP8S302Q.Aug 1, 1995 · N13599 · Cessna 172M · Reciprocating Engine Power SectionSDR 95ZZZX3615Skin · crackedDURING ANNUAL INSPECTION, THE FRONT SPAR AND SKID OF THE HORIZONTAL STABILIZER WERE FOUND SEVERELY CRACKED AND BUCKLED. NEW PARTS FROM CESSNA WERE REINFORCED AND MUCH STRONGER THAN ORIGINAL. SUSPECT IMPROPER GROUND HANDLING OR SEVERE TURBULENCE.Jul 13, 1995 · N1261U · Cessna 172M · Horizontal Stabilizer, Plate/SkinSDR 95ZZZX3614Spar · crackedDURING ANNUAL INSPECTION, THE FRONT SPAR AND SKID OF THE HORIZONTAL STABILIZER WERE FOUND SEVERELY CRACKED AND BUCKLED. NEW PARTS FROM CESSNA WERE REINFORCED AND MUCH STRONGER THAN ORIGINAL. SUSPECT IMPROPER GROUND HANDLING OR SEVERE TURBULENCE.Jul 13, 1995 · N1261U · Cessna 172M · Horizontal Stabilizer, Spar/RibSDR 95ZZZX3489Mount · crackedFOUND ENGINE MOUNT CROSS BRACES CRACKED. SUBMITTER RECOMMENED CHECK AT 100 HOURS ANNUAL.Jun 27, 1995 · N13552 · Cessna 172M · Engine Mount SectionSDR 95ZZZX3267Valve · wornENGINE WAS OVERHAULED 7-25-94. SPIRIT AIR VALVES, PN AL19001 AND AL73938, WERE INSTALLED NEW AT THAT TIME. AT 165.0 HOURS TSO, ENGINE RAN ROUGH. INSPECTION REVEALED ALL EXHAUST VALVES, PN AL19001, HAD ABNORMAL WEAR, ONE BEING EXTREME AND VERY NEAR FAILURE. Jun 16, 1995 · N64456 · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 95ZZZX3464Regulator · failedVOLTAGE REGULATOR FAILED AND OVERVOLTAGE CONDITION DAMAGED AVIONICS. AS VOLTAGE CLIMBED AND CIRCUIT (50A) BREAKER OPENED, AN ARC DEVELOPED WHICH MELTED THE BI-METAL ELEMENT TO .1250 INCH BACK FROM CONTACT CAUSING SMOKE IN COCKPIT. VERY HIGH VOLTAGE IS REQUIRJun 8, 1995 · N80534 · Cessna 172M · DC RegulatorSDR 95ZZZX3490Mount · crackedFOUND ENGINE MOUNT CRACKED AT CROSS BRACES. RECOMMEND CHECK AT 100 HOURS AT ANNUALS.Jun 1, 1995 · N21690 · Cessna 172M · Engine Mount SectionSDR 95ZZZX3010Gear · defectiveREMOVED ACCESSORY CASE TO CHECK COMPLIANCE WITH AD 81-18-04 OIL PUMP GEARS. LOG BOOKS NON-SPECIFIC. FOUND OIL PUMP DRIVING GEAR AND SHAFT WITH SHEARED WOODRUFF KEY. OIL PUMP ASSEMBLY ON VERGE OF COMPLETE FAILURE. PUMP HOUSING BADLY DAMAGED. ENGINE MANUFACJun 1, 1995 · N5209R · Cessna 172M · Reciprocating Engine Oil SystemSDR 95ZZZX3009Shaft · defectiveREMOVED ACCESSORY CASE TO CHECK COMPLIANCE WITH AD 81-18-04 OIL PUMP GEARS. LOG BOOKS NON-SPECIFIC. FOUND OIL PUMP DRIVING GEAR AND SHAFT WITH SHEARED WOODRUFF KEY. OIL PUMP ASSEMBLY ON VERGE OF COMPLETE FAILURE. PUMP HOUSING BADLY DAMAGED. ENGINE MANUFACJun 1, 1995 · N5209R · Cessna 172M · Reciprocating Engine Oil SystemSDR 95ZZZX3222Bulkhead · crackedAT ANNUAL INSPECTION, BOTH FORWARD AND REAR PROP SPINNER BULKHEADS FOUND TO HAVE MULTIPLE CRACKS AROUND BOLT HOLES AND RIVETS. REAR BULKHEAD WAS SLIGHTLY DEFORMED. SOMEONE HAD STOP-DRILLED CRACKS AT SAME TIME IN THE PAST. SUBMITTER SUGGESTED CRACKS OF THIS May 18, 1995 · N5418R · Cessna 172M · Propeller Spinner SectionSDR 95ZZZX3221Bulkhead · crackedAT ANNUAL INSPECTION, BOTH FORWARD AND REAR PROP SPINNER BULKHEADS FOUND TO HAVE MULTIPLE CRACKS AROUND BOLT HOLES AND RIVETS. REAR BULKHEAD WAS SLIGHTLY DEFORMED. SOMEONE HAD STOP-DRILLED CRACKS AT SAME TIME IN THE PAST. SUBMITTER SUGGESTED CRACKS OF THIS May 18, 1995 · N5418R · Cessna 172M · Propeller Spinner SectionSDR 95ZZZX2442Spar · holes elongatedFOUND UPPER LIFT STRUT ATTACH BOLT HOLE ELONGATED IN SPAR. FORK AND SPEAR HOLES WERE OKAY. CONTACTED CESSNA TECH REP FOR THEIR ADVICE ON A REPAIR. WAS TOLD BY CESSNA TECH REP AND ENGINEER TO GREASE BOLT AND LUBE PARTS WELL ACF-50, AND RESASSEMBLE. CONTACTEMay 9, 1995 · N80487 · Cessna 172M · Wing SparSDR 95ZZZX2697Axle · brokenON LANDING, LEFT MAIN GEAR AXLE CRACKED. THE OUTER HALF COMPLETELY SEPARATED FROM THE INNER HALF WHICH REMAINED ON THE GEAR LEG. THERE WAS NO EVIDENCE OF PREVIOUS CRACKS OR HARD LANDINGS.May 6, 1995 · N9347H · Cessna 172M · Main Landing Gear Strut/Axle/TruckSDR 95ZZZX3792Valve · failedWHILE IN-FLIGHT CRUISE, THE HEAD OF THE EXHAUST VALVE BROKE OFF THE VALVE STEM CAUSING INTERNAL ENGINE DAMAGE. THE AIRCRAFT MADE AN EMERGENCY LANDING ON A SHORT GRASS RUNWAY CAUSING SUBSTANTIAL DAMAGE TO AIRCRAFT. THIS INSPECTOR HAS WITNESSED THIS BEFORE ON Apr 28, 1995 · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 95ZZZX2880Control Cable · failedOUTER HOUSING FAILED ALLOWING THROTTLE TO CLOSE, BUT NOT OPEN. AIRCRAFT MADE A SUCCESSFUL FORCED LANDING. NO DAMAGE OR INJURIES.Apr 21, 1995 · N80347 · Cessna 172M · Power LeverSDR 95ZZZX2685Tank · leakINVESTIGATING FUEL LEAK IN RIGHT WING TANK AREA. FOUND FUEL TANK CRACKED APPROXIMATELY ONE-QUARTER OF THE WAY AROUND BASE OF FILLER NECK.Apr 13, 1995 · N5402R · Cessna 172M · Fuel StorageSDR 96ZZZX4788Muffler · deformedDURING ANNUAL INSPECTION, FOUND END OF MUFFLER CRACKED AND BODY OF MUFFLER BULGED UNDER HEAT SHIELD. THE DEFORMATION HAD BEEN PRESENT FOR SOME TIME. PROBLEM MAY HAVE OCCURRED DUE TO EXCESSIVE LEANING OF MIXTURE. (NOTE: EGT INDICATOR WAS INOP ON INSPECTION Mar 28, 1995 · N8882V · Cessna 172M · Engine Collector/Tailpipe/NozzleSDR 95ZZZX1791Hub · crackedSMALL CRACKS WERE FOUND AT BOLT HOLES WHERE WHEEL FLANGE ATTACHES TO HUB. SUBMITTER SUGGESTS IF UNDETECTED, THESE CRACKS COULD LEAD TO WHEEL FAILURE.Mar 13, 1995 · N1252U · Cessna 172M · Wheel/Ski/FloatSDR 95ZZZX2712Hose · defectiveUPON INVESTIGATION OF LOWER THAN NORMAL POWER OUTPUT, FOUND INTAKE COUPLING HOSE INTERIOR (ALL 4) INTERNALLY REDUCING IN SIZE FROM 1.75 INCHES TO 1.25 INCHES. THIS IS A SUBSTANTIAL REDUCTION IN FLOW (NEARLY ONE-HALF VOLUME) FROM 3.06 SQUARE INCH TO 1.56 SQUARMar 3, 1995 · N9526H · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 95ZZZX2182Valve · failedDURING FLIGHT, ENGINE STARTED RUNNING ROUGH, ENGINE FAILED ON LANDING. NR 3 CYLINDER VALVE EXHAUST FAILED. REPLACED/OVERHAULED CYLINDER. AIRCRAFT RETURNED TO SERVICE.Feb 24, 1995 · N64373 · Cessna 172M · Reciprocating Engine Cylinder SectionSDR 95ZZZX1128Bracket · brokenALTERNATOR CIRCUIT BREAKER TRIPPED. WIRE WAS SHORTING ON BACKSIDE OF THE ALTERNATOR. AFTER REMOVAL OF ALTERNATOR, FOUND BRACKET BOLTED TO THE BOTTOM FRONT RIGHT OF THE ENGINE WAS BROKE IN TWO AT THE REAR BOLT HOLE. THE ALTERNATOR SEEMED SECURE BEFORE REMOVAFeb 7, 1995 · N1918V · Cessna 172M · Alternator-Generator Drive
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