Cessna 401

Service difficulty reports · 93

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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 = '401'
  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 TZR2004F00004Cylinder · burnedTHE NR 2 CYLINDER FAILED. AT DISASSEMBLY THE NR 2 CYLINDER WAS FOUND TO HAVE BURNED, THE BURNING OF THIS CYLINDER CAUSED A LOSS OF OIL. THE RESULTING LOSS OF OIL CAUSED THE BEARING TO RUB WITHOUT OIL AND EVENTUAL FAILURE. WHEN IT FAILED, IT MADE A HOLE IN TDec 5, 2003 · N401TE · Cessna 401 · Reciprocating Engine Cylinder SectionSDR 2003FA0000984Safety Switch · defectiveLANDING GERA WOULD NOT RETRACT AFTER TAKE OFF DUE TO A DEFECTIVE GEAR SAFETY SWITCH.Sep 29, 2003 · N401TE · Cessna 401 · Landing Gear Retraction/Extension SystemSDR CA030827007Clamp · broken(CAN) DURING A NR 4 INSPECTION, THE V-BAND CLAMP ATTACHING THE EXHAUST TAIL PIPE TO THE TURBOCHARGER, WAS FOUND BROKEN. THE CLAMP WAS BROKEN IN HALF. THE ONLY THING HOLDING THE TAIL PIPE ON WAS A SUPPORTING HOSE TYPE CLAMP MOUNTED HALF WAY DOWN THE PIPE. THE BAug 19, 2003 · Cessna 401 · Engine Collector/Tailpipe/NozzleSDR CA030609007Turbocharger · cracked(CAN) DURING AN INSPECTION, THE COLD SIDE OF THE TURBOCHARGER TURBINE WAS FOUND TO BE RUBBING WHEN SPUN BY HAND. THE TURBOCHARGER WAS REMOVED. A CRACK WAS FOUND CLOSE TO THE TAIL PIPE ATTACH FLANGE. THE CRACK HAD SWELLED, CAUSING THE TURBO HOUSING TO COME INTMay 26, 2003 · Cessna 401 · Reciprocating Engine SuperchargerSDR MHJ2002F00002Cylinder · separatedNR 4 CYLINDER FOUND SEPERATED FROM CRANKCASE, CAUSE UNKNOWN. ENGINE REMOVED FROM AIRCRAFT AND SENT TO OVERHAUL FACILITY.Feb 18, 2002 · N401PW · Cessna 401 · Reciprocating Engine Cylinder SectionSDR MHJ2002F00000Transfer Pump · inoperativeTRANSFER PUMP, INOPERATIVE.Jan 28, 2002 · N3208Q · Cessna 401 · Fuel Transfer ValveSDR 2002FA0000107Shuttle Valve · failedAFTER STARTING THE RT ENGINE & THE LT ENGINE IS OFF. THE RT VACUUM SYSTEM PULLED BOTH LT & RT ORANGE INDICATOR BULLETS ON THE VACUUM GAUGE INDICATING THAT THE LT VACUUM SYSTEM IS WORKING, BUT THE LT ENGINE IS SHUT DOWN. CAUSE: THE LT SHUTTLE/CHECK VALVE FOR THDec 12, 2001 · N3264Q · Cessna 401 · Vacuum Distribution SystemSDR CA011212004Diaphragm · damaged(CAN) FUEL WAS NOTICED LEAKING FROM THE HEATER FUEL PUMP VENT LINE. THE FUEL PUMP WAS DISMANTLED AND THE DIAPHRAM WAS FOUND TO HAVE FAILED CAUSING FUEL TO LEAK DOWN TO THE BEARING, REMOVING ALL LUBRICATION AN ALSO FALLING. THE FUEL PUMP WAS REPLACED.Dec 11, 2001 · Cessna 401 · Heating SystemSDR MHJ2001F00000Engine · malfunctionedLEFT ENGINE HAD A FUEL FLOW PROBLEM. ENGINE QUIT ON TAKE-OFF WITHOUT INCIDENT. MORE INFORMATION TO FOLLOW. WHEN ACTUAL PROBLEM IS FOUND.Aug 20, 2001 · N4021Q · Cessna 401 · Engine (Reciprocating)SDR CA010622028Doubler · cracked(CAN) WHILE COMPLETING AN INSPECTION A CRACK WAS FOUND ON THE RT MAIN LANDING GEAR DOUBLER. A WING RIB IMPROVEMENT KIT (SK414-8E) WAS PREVIOUSLY INSTALLED. DOUBLER P/N 5292004-8 WAS PART OF THE KIT. IT WAS THIS DOUBLER THAT WAS AGA IN FOUND CRACKED. THE DOUBLEJun 5, 2001 · Cessna 401 · Wing, Landing Gear Attach FittingsSDR CA010622025Attach Fitting · cracked(CAN) DURING AN INSPECTION, THE LOWER SCISSOR ATTACH LUG WAS FOUND CRACKED. THE CRACK WAS FOUNDONLY AROUND THE SMALLER LUG. THE RT LANDING GEAR AXLE ASSE MBLY WAS REPLACED.Jun 5, 2001 · Cessna 401 · Main Landing Gear Strut/Axle/TruckSDR CA010323010Pump · seized(CAN) WHILE IN CRUISE, THE CABIN HEATER QUIT. THE HEATER FUEL PUMP DRIVE SHAFT WAS FOUND BROKEN OFF. THERE WA NO SIGN OF LUBRICATION ON THE DRIVE SHAFT BEARINGS. THE BEARINGS WERE VERY WORN AND DRY. THE PUMP WAS REPLACED.Mar 1, 2001 · Cessna 401 · Heating SystemSDR 20010227CW001Torque Tube · crackedTORQUE TUBE CRACKED AT FORK BOLT TUBE BOSS. THIS IS 2ND 5/8 BOSS WE HAVE HAD FAIL AND RECOMMEND INSPECTION IMMEDIATELY ON UNITS OVER 5000 HOURS. THE 1/2 BOSS TORQUE TUBES DONT SEEM AS VUNERABLE. WE HAVE HAD 4 XRAYED THAT SHOW UNDERCUTTING AT WELDS AROUND BOJan 23, 2001 · N3208Q · Cessna 401 · Landing Gear Retraction/Extension SystemSDR 20010322CW007Safety Switch · inoperativeLANDING GEAR DOWN LIGHT DID NOT ILLUMINATE. SWITCH ACCT LEAF WAS BROKEN.Jan 15, 2001 · N31DB · Cessna 401 · Landing Gear Position and WarningSDR 20010208CW005Torque Tube · crackedWELD AT FORK BOLT THRU HOLE, HAD CRACK IN IT FOR SOME TIME , THAT WENT UNDETECTED. IT FINALLY PROGRESSED IN A SPIRAL PATTERN AND THE TUBE COMPLETELY FAILED.Jan 10, 2001 · N4021Q · Cessna 401 · Landing Gear Retraction/Extension SystemSDR 20010122CW001Torque Tube · crackedCABLE ATTACH ARM FAILED AT WELD. MOST LIKELY CRACKED DURING TOWING OPERATION DUE TO OVERSTEERING TURN LIMITS.Jan 1, 2001 · N401PW · Cessna 401 · Rudder Control SystemSDR 20010221AP001Arm · failedPILOT REPORTED LOSS OF RIGHT RUDDER CONTROL ON FINAL APPROACH AT DAL. RT RUDDER CABLE ARM ON TORQUE TUBE FAILED AT THE WELD. BELIEVE DAMAGE WAS CAUSED BY OVER TURNING NOSE GEAR BY GROUND PERSONNEL.INSTALLED SERVICEABLE TORQUE TUBE,AND RIGGED PER MANUAL.Dec 21, 2000 · N401PW · Cessna 401 · Rudder Control SystemSDR 20001025SH006Torque Tube · separatedPUSH/PULL ROD PN 5045213-2, PULLED OUT OF TORQUE TUBE ASSY, PN 50450104. CAUSE UNKNOWN. (X)Oct 5, 2000 · N3260Q · Cessna 401 · Landing Gear Retraction/Extension SystemSDR 20001019SH011Bellcrank · crackedDURING 100-HOUR INSPECTION, FOUND CRACK IN THE RADIUS OF THE CENTER ATTACH POINT AT BELLCRANK. CAUSE UNKNOWN. (X)Oct 2, 2000 · N3260Q · Cessna 401 · Landing Gear Steering SystemSDR CA001013026Bellcrank · broken(CAN) AFTER LANDING, PILOT NOTICED THE RT MAIN GEAR DOOR WAS NOT CLOSED. MAINTENANCE DISCOVERED THE DOOR ACTUATING BELLCRANK HAD BROKEN HALF WAY BETWEEN THE PIVOT AND THE ACTUATING LINKAGE. HAVE SEEN THIS SAME PART BREAK IN THE SAME PLACE ON AN AIRCRAFT THAT Sep 9, 2000 · Cessna 401 · Landing Gear Door Retract SectionSDR CA001013025Pump · shorted(CAN) THIS PUMP IS LOCATED ON AFT SIDE OF BACK WALL OF TIP TANK. ITS PURPOSE IS TO CIRCULATE FUEL FROM FRONT OF TANK TO CENTER SECTION OF TANK WHERE FUEL PICKUP IS. IT IS CONNECTED TO TEN AMP CCTT BREAKER, SHARED BY THE LDG LIGHT ON THAT SIDE. BREAKER HAD TAug 31, 2000 · Cessna 401 · Fuel Transfer ValveSDR 20000907SH035Transfer Pump · inoperativeSUBMITTER STATED THIS MODEL NUMBERED TRANSFER PUMP IS CONSISTENLY FAILING AT 300 HOURS OR LESS CAUSING A DANGEROUS CONDITION FOR PILOTS AND INCREASED MAINTENANCE. INSTALLED ON 5-19-00. FAILED ON 8-10-00. (X)Aug 10, 2000 · N3208Q · Cessna 401 · Fuel Boost PumpSDR 20000808SH001Switch · failedTHE PILOT REPORTED HE DID NOT HAVE A NOSE GEAR DOWNLOCK INDICATION. THE PILOT DECLARED AN EMERGENCY, AND LANDED WITHOUT INCIDENT. THE CAUSE OF THE PROBLEM WAS A DOWNLOCK MICROSWITCH ON THE NOSE GEAR THAT FAILED AND A BROKEN WIRE ON THE DOWNLOCK GEAR INDICATOAug 1, 2000 · N401PW · Cessna 401 · Landing Gear Position and WarningSDR 20000808SH002Alternator · failedRIGHT ALTERNATOR WAS INOPERTIVE ON RUN-UP BEFORE DEPARTURE. CAUSE OF PROBLEM WAS A DEFECTIVE ALTERNATOR. REPLACED THE ALTERNATOR AND CHECKED THE CHARGING SYSTEM, OK.Jul 26, 2000 · N3208Q · Cessna 401 · DC Generator-AlternatorSDR 20000907SH034Transfer Pump · failedSUBMITTER STATED THIS IS ONLY ONE OF MANY INCIDENTS. THESE PUMPS ARE REPEATEDLY FAILING AROUND 300 OR LESS HOURS. INSTALLED ON 11-15-99. FAILED ON 4-17-00. (X)Apr 17, 2000 · N3208Q · Cessna 401 · Fuel Boost PumpSDR CA000301003Transmitter · inaccurate(CAN) DUE TO A MALFUNCTIOING FUEL GAUGE, THE PILOT RAN THE LEFT ENGINE OUT OF FUEL ON FINAL APPROACH. THE SUBMITTER STATED THAT THE FUEL GAUGE SHOWED THAT THE LEFT TANK WAS NOT EMPTY WHEN INDEED IT WAS .Feb 9, 2000 · Cessna 401 · Fuel Quantity SensorSDR CA990423001Skin · cracked(CAN) NLG DRAG BRACE REVEALED SIDE-TO-SIDE PLAY. INVESTIGATION REVEALED CRACKS IN THE SKIN SURROUNDING THE LEFT HAND ATTACHMENT POINT FOR THE DRAG BRACE. THE BULKHEAD NORMALLY PROVIDING SUPPORT FOR THE SKIN IN THAT AREA WAS NO LONGER ATTACHED. THE RIVETS HAApr 8, 1999 · Cessna 401 · Fuselage, Landing Gear Attach FittingsSDR CA990513003Bellows · buckled(CAN) A FAULTY BELLOWS ASSEMBLY CAN CAUSE THE SEIZURE OF THE TURBOCHARGER. INTERNAL METAL BUCKLING AND PEELING OF THE EXHAUST CAN CAUSE PIECES TO DEPART INTO THE EXHAUST STREAM EVENTUALLY CAUSING THE SEIZURE OF THE TURBOCHARGER. THE MAINTENANCE SCHEDULE INVEFeb 11, 1999 · Cessna 401 · Engine Collector/Tailpipe/NozzleSDR 98ZZZX2451Bellcrank · failedWHILE TAXIING IN, THE PILOT HEARD A 'POPPING' NOISE IN THE NOSE LANDING GEAR AREA. A CLOSE INSPECTION REVEALED A BROKEN ADJUSTING BELLCRANK (CESSNA P/N 0842104-2). THE BELLCRANK WAS BROKEN WHERE THE WHEEL WELL ACTUATING ROD IS ATTACHED. SUBMITTER STATED UNABJun 17, 1998 · N2GE · Cessna 401 · Landing Gear ActuatorSDR 97ZZZX4887Pulley · failedON 100-HOUR INPSPECTION, FOUND FLAP PULLEY ON ACTUATOR CABLE (RETURN CABLE) UNDER AND AFT OF BATTERY BOX FAILED. CENTER BEARING HAD FROZEN DUE TO BATTERY ACID LEAKING FROM BROKEN DRAIN LINE. WHEN BEARING FROZE, IT BROKE LOOSE FROM PULLEY AND PULLEY WAS ROTATOct 10, 1997 · N31DB · Cessna 401 · Trailing Edge Flap Control SystemSDR CA970716003Emergency Exit · departed a/c(CAN) IN CRUISE AT 11,000 FEET, THE CREW NOTED AIR ENTERING THE CABIN THROUGH THE EMERGENCY EXIT. THE BOTTOM CORNER OF THE EXIT WAS NOTED TO BE EXTENDED OUTWARD BY APPROXIMATELY 1/4 OF AN INCH. SPEED OF THE AIRCRAFT WAS REDUCED BUT THE EMERGENCY EXIT DEPARTED Jul 9, 1997 · Cessna 401 · Emergency ExitsSDR EY2R9601324Races · corrodedRACES CORRODED.Dec 1, 1996 · Cessna 401 · Propeller AssemblySDR EY2R9601323Races · corrodedRACES CORRODED.Dec 1, 1996 · Cessna 401 · Propeller AssemblySDR EY2R9601322Keepers · corrodedCORROSION FOUND ON KEEPERS.Dec 1, 1996 · Cessna 401 · Propeller AssemblySDR 96ZZZX5297Turbocharger · failedPILOT COMPLAINED OF LOOSING POWER IN BOTH ENGINES ALTHOUGH NOT SIMULTANEOUSLY. DURING GROUND RUN BOTH WASTEGATES WERE FOUND STUCK IN THE OPEN POSITION. AFTER LUBRICATING WASTEGATE SHAFTS AND MOVING THEM BY HAND, SUBSEQUENT GROUND RUNS SHOWED NORMAL OPERATIONSep 12, 1996 · N401LF · Cessna 401 · Exhaust TurbochargerSDR EY2R9600098Hub · crackedHUB CRACKED IN NR 2 SOCKETJul 1, 1996 · Cessna 401 · Propeller Hub SectionSDR EY2R9600095Hub · crackedHUB CRACKED IN THREAD AREAJul 1, 1996 · Cessna 401 · Propeller Hub SectionSDR CA960708002Torque Tube · fractured(CAN) ON GEAR UP SELECTION AFTER TAKEOFF, A LOUD BANG WAS HEARD. THE AIRCRAFT CONTINUED AND AFTER GEAR DOWN SELECTION, THE R/H MAIN GEAR FAILED TO INDICATE LOCKED. AIRCRAFT LANDED WITHOUT INCIDENT. IT APPEARED THAT TORQUE TUBE MAY HAVE BEEN CRACKED PREVIOUSLY Jun 27, 1996 · Cessna 401 · Landing Gear Retraction/Extension SystemSDR 96ZZZX3538Torque Tube · crackedLEFT MAIN FAILED TO RETRACT. TORQUE TUBE WAS FOUND TO HAVE A SPIRAL CRACK STARTING AT THE TOP BY THE BOLT, P/N 5243518-3, AND TRAVELING AROUND THE TUBE AND TOWARD THE END OF THE TUBE.May 22, 1996 · N401RW · Cessna 401 · Landing Gear Retraction/Extension SystemSDR EY2R9600574Hub · corrodedHUB CORRODED.May 1, 1996 · Cessna 401 · Propeller Hub SectionSDR 95ZZZX2382Gear · failedPILOT REPORTED OIL STREAMING FROM LEFT ENGINE NACELLE WITH LOSS OF OIL PRESSURE AT CRUISE. HE SECURED THE LEFT ENGINE AND NOTIFIED ATC OF THE SITUATION. ATC CLEARED THE AIRCRAFT FOR STRAIGHT-IN APPROACH AT RDU. LANDING MADE WITHOUT FURTHER INCIDENT. INVESTApr 13, 1995 · N8438F · Cessna 401 · Reciprocating Engine Oil SystemSDR 95ZZZX602Bellcrank · failedWHILE AIRCRAFT WAS TAXIING, LT LANDING GEAR COLLAPSED. THE AIRCRAFT RECEIVED MODERATE DAMAGE. INVESTIGATION BY MAINTENANCE PERSONNEL REVEALED BELLCRANK FAILED IN MULTIPLE AREAS ALLOWING MAIN DRAG LINK TO RETRACT BACK OVER CENTER. PREVENTION - REMOVE HIGH CYJan 9, 1995 · N1253B · Cessna 401 · Landing Gear Retraction/Extension SystemSDR 95ZZZX481Tube · crackedPILOT NOTICED SPARKS COMING FROM RIGHT INBOARD LOWER NACELLE FORWARD OF WING LEADING EDGE. LANDING WAS MADE WITHOUT INCIDENT. INVESTIGATION REVEALED THE EXHAUST TUBE FROM THE RIGHT TRANSITION HEAD INBOARD TO THE SLIP JOINT ASSY HAD BULGED AND CRACKED TWO INCJan 9, 1995 · N3260Q · Cessna 401 · Engine Collector/Tailpipe/Nozzle
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