Cessna 172R

Service difficulty reports · 568

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 aircraft_model_key = '172R'
  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 2026FA0000570Stiffener · shearedFLAP TRACK STIFFENERS THAT KEEP THE FLAP TRACKS STRAIGHT AND TRUE WERE FOUND THE BE SHEARED OFF AND/OR CRACKEDJul 7, 2026 · N2433S · Cessna 172R · Wing Miscellaneous StructureSDR 2026FA0000290Button · meltedUPON INSPECTION AFTER MAJOR ENGINE OVERHAUL, IT WAS DISCOVERED THAT THE ROCKER SHAFT THRUST BUTTONS HAD EITHER PARTIALLY OR COMPLETELY MELTED. A COMPLETE ENGINE TEARDOWN INSPECTION WAS THEN PERFORMED, ONLY ONE CYLINDER HAD BOTH THRUST BUTTONS COMPLETELY INTACTApr 23, 2026 · N9520 · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2026FA0000390Stiffener · shearedFLAP TRACK STIFFENERS THAT KEEP THE FLAP TRACKS STRAIGHT AND TRUE WERE FOUND TO BE SHEARED OFF AND/OR CRACKED.Apr 14, 2026 · N2433S · Cessna 172R · Wing Miscellaneous StructureSDR 2026FA0000173Coil · bentUNDER NORMAL FLIGHT OPERATIONS, AT FIRST ROUTINE 500-HOUR INSPECTION FOUND COIL TAB WORN OUT OF LIMITS BECAUSE THE TAB WAS INCORRECTLY BEND AT FACTORY.Mar 11, 2026 · Cessna 172R · Magneto/DistributorSDR 2025FA0000286Impulse Coupling · brokenWHILE PERFORMING HARTZELL AVIATION ALERT S.B. NO. 225 IT WAS FOUND ON MAGNETO S/N H-Y103862 HAD A BROKEN IMPULSE CAM ASSEMBLY PIN. MAGNETO WAS INSTALLED 4/14/2025 AND REMOVED FOR INSPECTION ON 4/21/2025. HARTZELL AVIATION HAS BEEN NOTIFIED.Apr 22, 2025 · N42007 · Cessna 172R · Magneto/DistributorSDR 2024FA0000444Actuator · damagedRETAINING PINS FROM TRIM ACTUATOR GEAR FELL OUT.Jun 11, 2024 · N7265Z · Cessna 172R · Stabilizer Control SystemSDR 2023FA0000796Magneto · mismanufacturedFOUND DEFECT DURING INSPECTION OF FACTORY OVERHAULED MAGNETO. COIL TAB WAS NOT INSTALLED PARALLEL WITH THE MAGNETO PARTING SURFACE PER SECTION 7.8C OF MANUAL L-1363J. THIS CONDITION WOULD RESULT IN PREMATURE EXCESSIVE WEAR OF COIL TAB IF NOT CORRECTED.Nov 29, 2023 · N9886F · Cessna 172R · Magneto/DistributorSDR 2023FA0000795Magneto · mismanufacturedFOUND DEFECT DURING INSPECTION OF FACTORY OVERHAULED MAGNETO. COIL TAB WAS NOT INSTALLED PARALLEL WITH THE MAGNETO PARTING SURFACE PER SECTION 7.8C OF MANUAL L-1363J. THIS CONDITION WOULD RESULT IN PREMATURE EXCESSIVE WEAR OF COIL TAB IF NOT CORRECTED.Nov 29, 2023 · N9886F · Cessna 172R · Magneto/DistributorSDR 2023FA0000685Magneto · mismanufacturedOPENED MAGNETO DUE TO INABILITY TO SET TIMING TO ENGINE. FOUND CARBON ON CONTACTS. FOUND FACTORY DEFECT THAT COIL TAB WAS NOT INSTALLED PARALLEL WITH THE MAGNETO PARTING SURFACE PER SECTION 7.8C OF MANUAL L-1363J, RESULTING IN EXCESSIVE WEAR ON CARBON BRUSH Oct 27, 2023 · N9453Z · Cessna 172R · Magneto/DistributorSDR 2023FA0000622Cylinder · crackedPILOT REPORTED LOSS OF ENGINE POWER. BEGAN TO RUN ROUGH. MADE A PRECAUTIONARY NORMAL LANDING. MECHANIC REMOVED COWLING AND FOUND A CRACKED NR 4 CYLINDER. LB STATED NEW CYLINDERS WERE INSTALLED AT ENGINE OVERHAUL AT 1481.6 HOURS AGO. THE CYLINDER WAS REPLACED Oct 20, 2023 · N174GF · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2023FA0000597Magneto · failed inspFOUND TWO FACTORY DEFECTS WHILE PERFORMING FIRST 500-HOUR INSPECTION ON MAGNETO WITH 496.1 TT IN ACCORDANCE WITH MANUAL L-1363J. IMPULSE COUPLING RIVET WAS CROOKED AND NOT FULLY SET, SUCH THAT IMPULSE COUPLING FAILED SECTION 3.3.4 STEP B.12. ADDITIONALLY, COOct 12, 2023 · N2384U · Cessna 172R · Magneto/DistributorSDR 2023FA0000741Exhaust Valve · binding#2 CYLINDER STUCK EXHAUST VALVE CAUSING PUSHROD TO BEND AND LOSS OF POWER.Aug 5, 2023 · N5355W · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2023FA0000623Cylinder · crackedREMOVED COWL, FOUND NR 1 FOUND CRACKED AND SEPARATED. FAA PHOTOGRAPHED & AUTHORIZED THE CYLINDER TO BE REPLACED WITH OVERHAULED CYLINDER. NOTE: REPORTED THE NR 4 CYLINDER PREVIOUSLY.May 12, 2023 · N1746F · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2023FA0000035Magneto · damagedRH MAGNETO IMPULSE COUPLING BROKE DAMAGING THE MAG DRIVE GEAR, CAM SHAFT GEAR, AND VARIOUS OTHER GEARS LOCATED IN THE ACCESSORY CASE. ISSUE SHOWED UP DURING GROUND RUN. PILOT REPORTED THAT THE ENGINE WOULD SHUT DOWN DURING THE MAG CHECK WHEN SELECTING THE RH MJan 11, 2023 · N470U · Cessna 172R · Magneto/DistributorSDR 2021FA0000212Cylinder Head · crackedHAVE HAD TWO CYLINDER CRACK IN THE SAME PLACE WITH IN A TWO MONTH PERIOD. REQUESTING THAT AL FOUR CYLINDERS ARE REPLACED. ALSO HAD ONE CRACK ON A SECOND AIRCRAFT BOTH ENGINES WERE REBUILT AT THE SAME TIME JAN 2020 TWO DIFFERENT PLACES THIS ENGINE HAD NEW LYCJul 19, 2021 · N51827 · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2021FA0000075Brake Disc · crackedDURING A 100-HOUR INSPECTION A CRACK WAS FOUND ON THE SURFACE OF THE BRAKE DISC.Mar 4, 2021 · N673MA · Cessna 172R · BrakeSDR 2020FA0000211Tube · damagedFLAT TIRE AFTER LANDING. VISUAL INSPECTION SHOWED SMALL HOLE IN TUBE, BUT NO SIGN OF TIRE PUNTURE. BELIEVED TO BE TUBE FAILURE.Mar 2, 2020 · N9448Z · Cessna 172R · Tire TubeSDR 2020FA0000033Fuel Control · failedFUEL SERVO FAILURE RESULTED IN ENGINE LOSS OF POWER ON FINAL APPROACH TO LAND. AIRCRAFT WAS UNABLE TO GLIDE TO RUNWAY, LANDED IN GRASS AT APPROACH END OF RUNWAY. ENGINE WAS UNABLE TO BE RESTARTED ON GROUND AFTERWARDS. INCIDENT HAPPENED KPMP.Jan 9, 2020 · N5178S · Cessna 172R · Fuel Controlling SystemSDR 2018FA0000505Cylinder · fouledDURING FLIGHT ENG THROTTLE RPM PULLED TO IDLE TO DESCEND WHILE RUNNING ROUGH. ENG SHUTOFF AND COULD NOT BE STARTED. EMERGENCY FIELD LANDING COMPLETED. ACFT SENT THROUGH ANNUAL INSPECTION AND CAUSE OF ROUGH RUNNING ENG FOUND. BOTH SPARK PLUGS IN NR 4 CYLINDDec 11, 2018 · N652MA · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2018FA0000289Pressure Switch · brokenPROCEEDED TO THE FLIGHT PORTION OF A PPL CHECKRIDE ORIGINATING AT KDLZ. DEPARTED TO THE EAST AND VECTORED PILOT TO HEADINGS. AFTER NOTICING SPECKLES OF WHAT WAS LIKELY OIL ON THE WINDSHIELD, AND OBSERVING A BUILDING PRESENCE, DIVERTED FOR A CAUTIONARY LANDINJul 18, 2018 · N2634E · Cessna 172R · Engine Oil PressureSDR 2018FA0000179Pump · failedDURING A DUAL LESSON AT 2500MSL THE AIRCRAFT EXPERIENCED A POWER INTERRUPTION. FOLLOWING THE CHECKLIST, THE ELECTRICAL FUEL PUMP WAS TURNED ON WHICH RESTORED NORMAL POWER IMMEDIATELY. THE FLIGHT RETURNED TO KLOT WITHOUT FURTHER INCIDENT. UPON INSPECTION OF THEMay 5, 2018 · N674MA · Cessna 172R · Engine Fuel PumpSDR 2018FA0000137O-Ring · brokenDURING TAXI PILOT APPLIED BOTH BRAKES. THE RIGHT PEDAL WENT THROUGH FULL TRAVEL AND THE LEFT PEDAL ACTIVATED THE BRAKE. THE AIRCRAFT SPUN QUICKLY TO THE LEFT AND WENT OFF OF THE TAXI WAY. THE MAINTAINERS DISCOVERED A BROKEN O-RING IN THE RIGHT BRAKE MASTER Apr 12, 2018 · N51827 · Cessna 172R · Master Cylinder/Brake ValveSDR 2018FA0000227Pushrod · wornEXCESSIVE WEAR ON PUSHROD ON THE ROCKER END AND ON THE ROCKER.Sep 20, 2017 · N9563A · Cessna 172R · Reciprocating Engine Power SectionSDR 2017FA0000272Rib · crackedFLYING AT LOW ALTITUDE. WHEN FLAP WAS UP, A STRANGE SOUND WAS HEARD, AND FOUND THE LEFT FLAP CANNOT BE PROPERLY OPERATED. THE PLANE LANDED SAFELY AND NO ONE WAS INJURED. THE INSPECTION FOUND THAT THE FLAP TRACK WAS JAMMED, AND FOUND THAT THE ROOT OF THE INNER Jun 1, 2017 · Cessna 172R · Trailing Edge FlapsSDR 2017FA0000377Cylinder Head · crackedENGINE STARTED TO RUN ROUGH IN FLIGHT, THE STUDENT BROUGHT THE PLANE BACK. START UP AND RUN UP REVEALED A DEAD CYLINDER. VISUAL INSPECTION REVEALED A CRACK GOING FROM ONE SPARK PLUG HOLE TO WITHIN AN INCH OF THE OTHER AROUND THE CIRCUMFERENCE OF THE HEAD JUSMar 10, 2017 · N3523R · Cessna 172R · Reciprocating Engine Cylinder SectionSDR 2016FA0000408Cylinder Head · separatedAIRCRAFT WAS IN THE PATTERN. LOUD BANG FOLLOWED BY SEVERE VIBRATION AND REDUCED POWER. EMERGENCY DECLARED SUCCESSFUL LANDING ACCOMPLISHED. INSPECTED FOUND THAT THE NR 1 CYLINDER TOP HAD SEPARATED AT THE TOP OF THE STEEL SLEEVE. TROUBLESHOOTING AND REPAIR Sep 1, 2016 · N716MW · Cessna 172R · Reciprocating Engine Cylinder SectionSDR T22R R/O9856Crankshaft · brokenCRANKSHAFT BROKE AT THE NR 4 CONNECTING ROD JOURNAL, SEPARATION OCCURRED AT THE NR 5 CHEEK COUNTING FROM THE FRONT OF CRANKSHAFT.Aug 29, 2016 · N365ES · Cessna 172R · Reciprocating Engine Power SectionSDR Y2GR2016FA0000356Cylinder · crackedPN: 05K21104, CYLINDER CRACKED AROUND EXHAUST PORT. THIS IS THE 5TH CYLINDER WE ARE AWARE OF WITH THIS TYPE OF CRACK.Aug 4, 2016 · N2462T · Cessna 172R · Reciprocating Engine Cylinder SectionSDR DU0S2016FA0000129Servo · contaminatedDURING O/H AND INSTALLED A FUEL INJECTOR. AT 62 TSOH DYE CONTAMINATION FOUND IN IMPACT TUBES. TO DETERMINE IF FUEL WAS LEAKING PAST THE FLOW DIVIDER, THE INJECTOR WAS FLUSHED OF DYE BY REMOVING THE AIR PLUGS. INJECTOR INSTALLED ON ACFT, FUEL INLET HOSE ATTAMar 11, 2016 · N3506G · Cessna 172R · Fuel Controlling SystemSDR ECPS2016FA0000125Servo · contaminatedPRECISION FUEL INJECTOR, PN 2576536-2, SN 70D95404 REMOVED 2/9/16, TSOH 55. UNIT REMOVED DUE TO FUEL DYE CONTAMINATION IN IMPACT TUBES AND AIR SLOT. UNIT PREVIOUSLY REPAIRED 10/19/11, REMOVED 9/15/15 DUE TO FUEL DYE CONTAMINATION IN IMPACT TUBES AND AIR SLOTMar 10, 2016 · N53143 · Cessna 172R · Fuel Injector NozzleSDR 2016FA0000124Servo · contaminatedPRECISION FUEL INJECTOR REMOVED DUE TO FUEL DYE CONTAMINATION IN IMPACT TUBES AND AIR SLOT. UNIT WAS INSTALLED ON 10/5/15. UNIT WAS PREVIOUSLY O/H 9/10/15. UNIT REMOVED AT TACH 3602 DUE TO FUEL DYE CONTAMINATION IN IMPACT TUBES AND AIR SLOT TSOH 8. UNIT PREMar 10, 2016 · N24748 · Cessna 172R · Fuel Controlling SystemSDR 2016FA0000035Battery · no testTHIS BATTERY FAILED CAPACITY CHECK, WHICH WAS PERFORMED AS DIRECTED BY MANUAL Q01-1120, REV J 7-8-15, PAR 7-7.Dec 11, 2015 · N36LU · Cessna 172R · Battery/Charger SystemSDR 2016FA0000122Injector · contaminatedPRECISION FUEL INJECTOR COMPLIED WITH, MIXTURE AND IDLE, OK, REPORTED ENGINE STUMBLE, TEST FLIGHT OK. REPORTED ENGINE STUMBLE, TEST FLIGHT OK TSOH 29.6. ENGINE STUMBLE REPORTED, DYE FOUND IN IMPACT TUBES AND AIR SLOT. FUEL INJECTOR REMOVED AND SENT FOR REPDec 7, 2015 · N5314R · Cessna 172R · Fuel Injector NozzleSDR CA151207002Stop Fitting · missing(CAN) ELEVATOR TRIM SYSTEM FOUND TO BE MISSING 1 STOP BLOCK.Dec 4, 2015 · Cessna 172R · Elevator Tab Control SystemSDR CA151203010Stop Fitting · missing(CAN) ELEVATOR TRIM SYS FOUND TO BE MISSING ONE STOP BLOCK.Dec 1, 2015 · Cessna 172R · Elevator Tab Control SystemSDR CA151130023Stop · missing(CAN) ELEVATOR TRIM SYS FOUND TO BE MISSING 1 STOP BLOCK.Nov 26, 2015 · Cessna 172R · Elevator Tab Control SystemSDR CA151116012Stop · missing(CAN) ELEVATOR TRIM SYS FOUND TO BE MISSING 1 STOP BLOCK.Nov 12, 2015 · Cessna 172R · Elevator Tab Control SystemSDR GM8S2015100800481Tire · failedTHE LT MAIN TIRE WAS FLAT UPON LANDING THE ACFT. THE CAUSE OF THE FLAT IS THE ALARMING ISSUE. THERE WAS A STICKER INSIDE THE TIRE, FROM NEW, THAT EVENTUALLY DEGRADED AND RUBBED INTO THE TUBE MAKING A HOLE. THIS HOLE CAUSED AIR TO LEAK AND THE TIRE TO GO FLAOct 8, 2015 · N33LU · Cessna 172R · Tire TubeSDR BG8S2015FA0000192Magneto · out of alignmentREPLACED RT MAGNETO WITH O/H UNIT FROM O/H SHOP, MODEL 4371, SN 15011241. TIMED MAGNETO TO ENGINE PERFORMED GROUND RUN OPS CHECK GOOD ON GROUND, RELEASED AIRPLANE FOR SERVICE. DURING THE FIRST FLIGHT THE ENGINE RAN ROUGH ON CLIMB, PILOT RETURNED TO AIRPORT. RMay 5, 2015 · N175AF · Cessna 172R · Magneto/DistributorSDR CA150501007Screen · contaminated(CAN) FUEL SERVO INLET SCREEN FOUND TO HAVE LINT TYPE DEBRIS INSIDE.Apr 21, 2015 · Cessna 172R · Fuel Control/Reciprocating EnginesSDR CA150501006Screen · contaminated(CAN) FUEL SERVO INLET SCREEN FOUND TO HAVE LINT TYPE DEBRIS INSIDE.Apr 14, 2015 · Cessna 172R · Fuel Control/Reciprocating EnginesSDR CA150128003Wire · failed(CAN) TAIL NAV LIGHT WIRE SHORTED AGAINST ELEVATOR CABLE CAUSING BURN DAMAGE TO CABLE. THE NAV LIGHT WIRING CONSISTS OF A 5 AMP CIRCUIT-BREAKER-SWITCH WITH THREE BRANCHES OF 22 GAUGE WIRE FOR THE WING TIP AND TAIL NAV LIGHTS. THE TAIL LIGHT WIRE RUNS AFT UNDEJan 16, 2015 · Cessna 172R · Electrical Power System WiringSDR CA141113004Control Cable · frayed(CAN) CABLE STARTING TO FRAY AT PULLEY.Oct 27, 2014 · Cessna 172R · Elevator Control SystemSDR CA141113003Control Cable · frayed(CAN) CABLE STARTING TO FRAY AT REAR PULLEY.Oct 27, 2014 · Cessna 172R · Rudder Control SystemSDR CA141113002Bellcrank · worn(CAN) BEARING HOUSING LOOSE IN BELLCRANK.Oct 27, 2014 · Cessna 172R · Elevator StructureSDR DF2S2014FA0000645Line · separatedDURING TRAINING FLIGHT, ENGINE STARTED EXPERIENCING PROBLEM. ACFT MADE A SAFE LANDING AND TAXIED TO RAMP. UPON INITIAL INSPECTION, IT WAS NOTICED THAT THE NR 2 CYLINDER FUEL INJECTION LINE HAD BECOME SEPARATED FROM WELD AT B-NUT ON FUEL NOZZLE. LINE WAS REOct 17, 2014 · N9543P · Cessna 172R · Fuel Controlling SystemSDR KC2R2014FA0000392Impulse Coupling · crackedDURING PERFORMANCE OF A ROUTINE 500 HR INSPECTION OF MAGNETO, A CRACK WAS DISCOVERED IN IMPULSE COUPLING BASE PLATE, IN LINE WITH FLYWEIGHT AXLE. CRACK DISCOVERED DURING NDT "MAG PARTICLE INSPECTION" OF PART. IMPULSE WES REPLACED WITH NEW PART.Jun 6, 2014 · N7861A · Cessna 172R · Magneto/DistributorSDR KC2R2014FA0000391Impulse Coupling · crackedDURING PERFORMANCE OF A ROUTINE 500 HR INSPECTION OF MAGNETO, A CRACK WAS DISCOVERED IN IMPULSE COUPLING BASE PLATE, IN LINE WITH FLYWEIGHT AXLE. CRACK DISCOVERED DURING NDT "MAG PARTICLE INSPECTION" OF PART. IMPULSE WES REPLACED WITH NEW PART.Jun 6, 2014 · N7861A · Cessna 172R · Magneto/DistributorSDR CA140317010Magneto · failed(CAN) WHILE TESTING THE LT MAGNETO DURING PRE-FLIGHT GROUND RUN, IT WAS NOTED THAT THE ENGINE RAN EXTREMELY ROUGH. THE LT MAGNETO WAS REMOVED AND LOOSE PARTS WERE FOUND INSIDE. MAGNETO REPLACED.Mar 12, 2014 · Cessna 172R · Magneto/DistributorSDR CA140221001Alternator · malfunctioned(CAN) ALTERNATOR LOW OUTPUT CAUSING LOW VOLTAGE WARNING LIGHT TO ILLUMINATE INTERMITTENTLY. ALTERNATOR REPLACED.Feb 20, 2014 · Cessna 172R · AC Generator-Alternator
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