Cessna 421C

Service difficulty reports · 427

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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 = '421C'
  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 EY2R9601117Bearing · corrodedRETAIN BEARING CORRODED.Oct 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9601116Act Pin Assy · corrodedACT PIN ASSY FOUND CORRODED.Oct 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9601115Retain Ring · corrodedRETAIN RING FOUND CORRODED.Oct 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9601114Dowel · corrodedDOWEL CORRODED.Oct 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9601113Pin · corrodedCYLINDER PIN FOUND CORRODED.Oct 1, 1996 · Cessna 421C · Propeller AssemblySDR 96ZZZX5561Bolt · failedNR 4 CYLINDER ROCKER SHAFT BOLTS BROKE. LOOSE ROCKER PUNCHED A HOLE THROUGH VALVE COVER. ROUGH RUNNING AND SMOKE IS REASON FOR IN-FLIGHT SHUT DOWN.Oct 1, 1996 · N98PJ · Cessna 421C · Reciprocating Engine Cylinder SectionSDR EY2R9600991Dowel · corrodedDOWEL CORRODED.Sep 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600990Cylinder Pin · corrodedCYLINDER PIN FOUND CORRODED.Sep 1, 1996 · Cessna 421C · Propeller AssemblySDR 96ZZZX4757Alternator · inoperativeALTERNATOR FAILED WITHIN 40 HOURS OF OVERHAUL. A/E SN: A-80319. ARSNV2R045L.Aug 14, 1996 · N421CW · Cessna 421C · DC Generator-AlternatorSDR 96ZZZX4294Line · hole chafedWHILE C/W AD 95-09-13, THE FUEL LINE GOING TO THE FORWARD RIGHT WING INLET VALVE WAS FOUND NOT CENTERED GOING THROUGH A BULKHEAD THROUGH-HOLE. REMOVING THE LINE, A HOLE WAS FOUND CHAFED THROUGH. IF THE FUEL LEVEL HAD GONE BELOW THIS LINE, A FUEL STARVATION WAug 8, 1996 · N421RL · Cessna 421C · Aircraft Fuel Distribution SystemSDR CA960614006Valve · broken stem(CAN)#3 CYLINDER EXHAUST VALVE STEM BROKEN JUST BELOW THE HEAD.Jun 5, 1996 · Cessna 421C · Reciprocating Engine Cylinder SectionSDR EY2R9600771Dowel · corrodedDOWEL CORRODED.Jun 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600769Cylinder Pin · corrodedCYLINDER PIN FOUND CORRODED.Jun 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600768Cylinder Pin · corrodedCYLINDER PIN FOUND CORRODED.Jun 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600767Adapter · corrodedCORROSION FOUND ON ADAPTER.Jun 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600766Adapter · corrodedCORROSION FOUND ON ADAPTER.Jun 1, 1996 · Cessna 421C · Propeller AssemblySDR 96ZZZX2879Cylinder · head separatedON TAKEOFF, NR 1 CYLINDER SEPARATED AT THE HEAD CAUSING ENGINE POWER LOSS. PILOT SHUT DOWN LEFT ENGINE AND RETURNED TO AIRPORT. ENGINE AND CYLINDER HAD 757 HOURS SINCE OVERHAUL WITH .010 INCH OVERSIZED BARRELS. CYLINDER TOTAL TIME UNKNOWN.May 8, 1996 · N49TD · Cessna 421C · Reciprocating Engine Cylinder SectionSDR EY2R9600613Nut · corrodedNUT FOUND WITH CORROSION.May 1, 1996 · Cessna 421C · Propeller AssemblySDR 96ZZZX2580Cylinder · bolts failedENGINE WAS SHUT DOWN IN-FLIGHT BY PILOT. FOUND ROCKER SHAFT BOLTS BROKEN, AND BENT PUSH ROD. VALVES, GUIDES AND PISTON WERE INSPECTED. ALL PARTS FOUND IN GOOD CONDITION. REINSTALLED CYLINDER AND GROUND RUN. ALL FOUND GOOD.Apr 26, 1996 · N421CW · Cessna 421C · Reciprocating Engine Cylinder SectionSDR CA960513027Bolt · missing(CAN) ON LANDING, LT TORQUE LINK CENTER BOLT (AN 175-20) BUSHING (5041013) AND WASHERS (AN 960-7L) AND WASHERS (5045018-2) DEPARTED FROM AIRCRAFT CAUSING WHEEL TO CAMBER TO A CROSSWISE CONDITION AFFECTING LANDING ROLLOUT. DYE PENETRANT INSPECTION CARRIED OUT Apr 23, 1996 · Cessna 421C · Main Landing Gear Strut/Axle/TruckSDR AU960536Switch · faulty(AUS) NOSE LANDING GEAR DOWNLOCK SWITCH FAULTYApr 19, 1996 · Cessna 421C · Landing Gear Position and WarningSDR AU960581Bolt · separated(AUS) ENGINE THROTTLE CONTROL UNIT ARM PNO 5055002-1 ATTACHMENT NUT PNOMS21044N3 AND BOLT PNO AH37A SEPARATED FROM ARM AND WERE FOUND ONTHE FLOOR OF THE ENGINE BAY - THE NUT WAS OF THE METAL LOCK TYPE AND INVESTIGATION FOUND THAT IT COULD BE SPUN ONTO THE BOLTApr 17, 1996 · Cessna 421C · Power LeverSDR AU960486Pipe · corroded(AUS) LH NACELLE FUEL TANK TRANSFER PUMP TO 'T' FITTING PIPE LEAKING FUEL FROM PIN HOLE DUE TO INTERNAL CORROSIONApr 16, 1996 · Cessna 421C · Aircraft Fuel Distribution SystemSDR 96ZZZX2158Indication · malfunctionPILOT MADE A PRECAUTIONARY ENGINE SHUT-DOWN AND PROPELLER FEATHER DUE TO A PERCEIVED LOSS OF ENGINE OIL PRESSURE. THE FOLLOWING MAINTENANCE INSPECTION COULD NOT FIND ANY DEFECTS IN THE ENGINE OR OIL PRESSURE INDICATING SYSTESM. TWO GROUND RUNS AND A TEST FLIApr 9, 1996 · N60RR · Cessna 421C · Engine Oil PressureSDR 96ZZZX2082Tube Assy · failedDURING FLIGHT, OIL WAS NOTICED ON THE RIGHT NACELLE, THE AIRCRAFT LANDED SAFELY AND THE PROPELLER WAS FEATHERED. INVESTIGATION REVEALED TUBE ASSEMBLY FROM THE CRANKCASE TO THE FUEL MANIFOLD HAD BROKEN FROM THE SOLDER JOINT CLOSEST TO THE FUEL MANIFOLD.Apr 3, 1996 · N6867L · Cessna 421C · Reciprocating Engine Oil SystemSDR 96ZZZX2407Piston · burnedAIRCRAFT LOST POWER ON NR 1 ENGINE. REMOVAL OF NR 5 CYLINDER REVEALED PISTON DOME EDGE BURNED AWAY FROM 6:00 POSITION TO 12:00 POSITION. AT 9:00 POSITION, PISTON DOME BURNED COMPLETELY THROUGH, APPROXIMATELY 1 INCH OF PISTON MATERIAL MISSING FROM EDGE TOWARDApr 2, 1996 · N67934 · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 96ZZZX1943Tach Generator · brush wearTACHOMETER GENERATOR INTERNAL GEARS ARE WEARING PREMATURELY CAUSING BRUSHES TO FAIL. NEW REPLACEMENT PART FROM SHELF AVERAGED LESS THAN 100 HOURS TIS, BEFORE FAILURE.Mar 18, 1996 · N781TC · Cessna 421C · Engine RPM Indicating SystemSDR 96ZZZX3339Bushing · wornPROPELLER HAD AN INTERNAL LEAK AFTER 250 HRS OPERATION SINCE LAST OVERHAUL. THE ROD HAD BEEN RUBBING ON THE BUSHING IN THE BACK OF THE HUB WHICH IS A REPAIR FROM ORIGINAL MANUFACTURER OF ALL ALUMINUM HUBS. THE BUSHING INSTALLED FOR REPAIR IS MADE OF STEEL. Mar 15, 1996 · Cessna 421C · Propeller Hub SectionSDR 96ZZZX1515Control Arm · wornFOUND HOLES ELONGATED WHERE ELEVATOR CONTROL ARM ATTACHES TO BRACKET ON THE AFT SPAR OF HORIZONTAL STABILIZER. SUSPECT CAUSE, LOOSE AND WORKING BOLTS AND TIME ON PART.Mar 8, 1996 · N40ME · Cessna 421C · Elevator Control SystemSDR 96ZZZX2410Shaft · shearedFOUND DRIVE SHAFT ON AIR CONDITIONING, HYDRAULIC PUMP SHEARED. UPON REMOVAL, SYSTEM HYDRAULIC PUMP SHAFT SPLINES WERE FOUND WORN OUT AND RUSTED. SUBMITTER SUGGESTS SPLINES BE LUBED AT 200-HOUR INTERVALS TO PREVENT THIS PROBLEM FROM RECURRING.Mar 7, 1996 · N215MP · Cessna 421C · Reciprocating Engine Rear SectionSDR 96ZZZX2016Spring Drive · crackedINSPECTION FOUND GOVERNOR SPRING DRIVE HOLDING FLYWEIGHTS CRACKED AT SPRING HOLE.Mar 7, 1996 · Cessna 421C · Propeller GovernorSDR EY2R9601453Piston Rod Assy · wornPROP PISTON ROD ASSY WORNMar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600459Act Pin Assy · corrodedACT PIN ASSY CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600458Dowel · corrodedDOWEL CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600457Dowel · corrodedDOWEL CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600456Cylinder Pin · corrodedCYLINDER PIN CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600455Cylinder Pin · corrodedCYLINDER PIN CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600454Dowel · corrodedDOWEL CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR EY2R9600453Cylinder Pin · corrodedCYLINDER PIN CORRODED.Mar 1, 1996 · Cessna 421C · Propeller AssemblySDR 96ZZZX1093Line · b-nut looseNR 3 CYLINDER FUEL INJECTOR LINE ATTACH B-NUT, BACKED OFF A DISTRIBUTOR VALVE CAUSING FUEL LEAK.Feb 26, 1996 · N211TB · Cessna 421C · Engine Fuel DistributionSDR 96ZZZX1994Flyweight Base · crackedINSPECTION FOUND GOVERNOR FLYWEIGHT BASE CRACKED.Jan 30, 1996 · N145CP · Cessna 421C · Propeller GovernorSDR 96ZZZX1992Drive Disc · crackedINSPECTION FOUND GOVERNOR DAMPENER DRIVE DISC CRACKED. SUSPECT CAUSE AS POSSIBLE DETONATION OF ENGINE.Jan 30, 1996 · N145CP · Cessna 421C · Propeller GovernorSDR 96ZZZX1991Drive Disc · crackedINSPECTION FOUND GOVERNOR DAMPENER DRIVE DISC CRACKED. SUSPECT CAUSE AS POSSIBLE DETONATION OF ENGINE.Jan 30, 1996 · N145CP · Cessna 421C · Propeller GovernorSDR 96ZZZX1990Flyweight Base · crackedINSPECTION FOUND GOVERNOR FLYWEIGHT BASE CRACKED.Jan 30, 1996 · N145CP · Cessna 421C · Propeller GovernorSDR AU960034Elt · activated(AUS) ELT ACTIVATED 4 HOURS AFTER LAST FLIGHT - NO INDICATION EVIDENT ON REMOTE SWITCH - THE UNIT WAS TURNED OFF AS PER INSTRUCTIONS BUT STILL CONTINUED TO TRANSMIT - THE UNIT WAS THEN TURNED OFF BYDISCONNECTING THE BATTERYJan 16, 1996 · Cessna 421C · Emergency Locator BeaconSDR 96ZZZX599Pump · shaft rustedNR 2 ENGINE AIR CONDITIONER HYDRAULIC PUMP FOUND LEAKING OUT CASE DRAIN. WHILE ATTEMPTING TO REMOVE PUMP, FOUND SHAFT RUSTED ONTO AIRCRAFT HYDRAULIC PUMP AND AIRCRAFT HYDRAULIC SHAFT RUSTED SOLID ONTO ENGINE DRIVE ADAPTER. DRIVE SHAFT HAD TO BE FORCIBLY REMOJan 9, 1996 · N940WP · Cessna 421C · Hydraulic Pump (Electric/Engine), MainSDR 96ZZZX588Bulkhead · crackedWHILE PERFORMING INSPECTION REQUIRED BY CESSNA SB 95-10A, FOUND CRACK IN TAIL BULKHEAD AT STA 373.56. NEW BULKHEAD INSTALLED AND AREA REINFORCED WITH SK 421-143 KIT INSTALLATION. SUBMITTER SUGGESTS INSPECTION PER SB 95-10A AND KIT INSTALLATION ON 400 SERIES Jan 5, 1996 · N685GF · Cessna 421C · Fuselage Main, BulkheadSDR 96ZZZX720Bearing · galledAIRCRAFT OWNER REPORTED HOUR METER RUNNING CONSTANTLY. FOUND LEFT MLG EXTENDED FULLY, ALLOWING SQUAT SWITCH TO BE UNACTUATED AND HOUR METER TO RUN CONSTANTLY. REMOVED LOWER LEG AND FOUND INNER, UPPER BEARING WORN/GALLED AND BINDING IN BARREL. THE AIRCRAFT HJan 1, 1996 · N146TJ · Cessna 421C · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX719Bearing · wornAIRCRAFT OWNER REPORTED HOUR METER RUNNING CONSTANTLY. FOUND LEFT MLG EXTENDED FULLY, ALLOWING SQUAT SWITCH TO BE UNACTUATED AND HOUR METER TO RUN CONSTANTLY. REMOVED LOWER LEG AND FOUND INNER, UPPER BEARING WORN/GALLED AND BINDING IN BARREL. THE AIRCRAFT HJan 1, 1996 · N146TJ · Cessna 421C · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX950Adapter Kit · excess wearON 12-27-95, A 50-HOUR INSPECTION WAS PERFORMED. METAL CONTAMINATION NOTED IN RT ENG OIL FILTER. FURTHER INVESTIGATION REVEALED TORSIONAL DAMPER AND STARTER SHAFT GEAR ASSY WERE LOOSE IN THE STARTER ADAPTER HOUSING. ADAPTER ASSY REMOVED AND FND NEEDLE BEARIDec 27, 1995 · N369NM · Cessna 421C · Reciprocating Engine Rear Section
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