Air Tractor AT-301

Service difficulty reports · 37

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 = 'AT301'
  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 FQWG2014082200494Engine · power lossDURING PESTICIDE APPLICATION, THE ENGINE STARTED LOOSING POWER AND RUNNING ROUGH. UNABLE TO MAINTAIN FLIGHT.Jul 28, 2014 · N8593S · Airtrc AT301 · Engine (Reciprocating)SDR 2SEG2014FA0000408Bolt · brokenDURING A TAKEOFF ROLL, PILOT HEARD A POP AND THE ACFT PULLED HARD TO THE LT AND LEFT THE RUNWAY AND ENDED UPSIDE DOWN. THE LEFT MLG FORWARDED ATTACH BOLT BROKE AND ALLOWED THE LT MLG TO COME LOOSE AND CAUSED THE LEFT "PULL" OF THE ACFT. THIS BOLT ACCORDING TJun 27, 2014 · N8564S · Airtrc AT301 · Main Landing GearSDR 2014FA0000023Bearing · failedSUPERCHARGER BLOWER AFT BEARING FAILURE DURING TAKEOFF.Apr 24, 2013 · N23416 · Airtrc AT301 · Reciprocating Engine SuperchargerSDR 2011FA0000567Engine · power lossTOTAL LOSS OF POWER ON TAKEOFF. 500 HOURS SINCE O/H.Aug 4, 2011 · N4345S · Airtrc AT301 · Engine (Reciprocating)SDR 2010FA0000341Isolator · splitENGINE ISOLATOR MOUNTS PN 22387 WERE REPLACED WHEN ACFT RESTORED. FIRST ANNUAL AFTER INSTALLATION WITH APPROX 60 HRS TIS MOUNTS SHOWED EXCESSIVE CRACKING AND DETERIORATION REQUIRING REPLACEMENT. LOWER MOUNTS SHOWED THE MOST AMOUNT OF WEAR WITH THE AREA AROUND Apr 14, 2010 · N3370 · Airtrc AT301 · Engine Mount SectionSDR 2009FA0000197Shaft · shearedAT THE TRANSITION FROM DECENT TO LEVEL FLIGHT ON A SEEDING PASS, PROP RPM WAS INCREASED AND A VIBRATION WAS FELT. AS THE THROTTLE WAS ADVANCED THE VIBRATION INCREASED DRAMATICALLY. THE ACFT WAS FORCED TO LAND AND AT LOW SPEED, FLIPPED OVER AS IT BROKE THROUGH Mar 9, 2009 · N3170C · Airtrc AT301 · Propeller Blade SectionSDR 2008FA0000652Engine · stoppedENGINE QUIT IN MID-AIR. ENGINE HAD 1195.0 HOURS SINCE MAJOR OVERHAUL. (K)Aug 22, 2008 · N2391Z · Airtrc AT301 · Engine (Reciprocating)SDR 2007FA0000727Blade · broken(9 INCHES) OF PROP BLADE BROKE OFF IN FLIGHT. THE SEVERE VIBRATION CAUSED PILOT TO LAND IN MUDDY FIELD. AIRCRAFT WAS TOTALED. (K)Jun 20, 2007 · N23667 · Airtrc AT301 · Propeller Blade SectionSDR 2004FA0000784Crankshaft · crackedAC WAS ON FERRY FLIGHT, PILOT REPORTED GETTING OIL ON WINDSHIELD. OIL BEGAN TO GET WORSE; REDUCED POWER, AC STARTED VIBRATING SEVERELY. POWER WAS REDUCED FURTHER AND VIBRATION ALSO REDUCED. PILOT LANDED AC IN UNPLANTED FIELD. AC SKIPPED OVER TERRACE AS SLOMay 15, 2004 · N8561S · Airtrc AT301 · Reciprocating Engine Power SectionSDR MMS2002F00000Bearing · wornENGINE OIL CHIP LIGHT CAME ON AFTER TAKE OFF. RETURNED AND LANDED. FOUND METAL IN OIL AND FILTER. REMOVED PROP AND THRUST BEARING COVER. FOUND THRUST BEARING BALLS SEVERLY WORN AND BALL CAGE BROKEN. REMOVED GEAR REDUCTION CASE AND REWORKED BY OVERHAUL FACAug 28, 2002 · N316OT · Airtrc AT301 · Reciprocating Engine Power SectionSDR AUS20020133Spider · cracked(AUS) PROPELLER SPIDER CRACKED. CRACK LENGTH 50.8MM (2IN).Feb 19, 2002 · Airtrc AT301 · Propeller Hub SectionSDR 2001FA0000149Wheel · fatiguedDURING TAKEOFF, RIGHT MAIN WHEEL HALF (OUTBOARD) SEPARATED. PILOT UNABLE TO REGAIN CONTROL AND WENT IN ROAD DITCH AND LANDED INVERTED. MINOR INJURY TO PILOT. WHEEL NUT, BEARING AND SPACER WERE STILL ON AXLE UPON ARRIVAL AT ACCIDENT SCENE. OUTER BEARING RACE HAJul 28, 2001 · N4361S · Airtrc AT301 · Wheel/Ski/FloatSDR 2001FA0000195Cylinder · crackedTHE NR 3 CYLINDER HEAD CRACKED AT THE ROCKER BOSS, ENGINE LOST POWER, AIRCRAFT EMERGENCY LANDED IN A FIELD. 2ND OCCURANCE.Jul 3, 2001 · N3164H · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR 20001102SH032Turbine · damagedENGINE DISASSEMBLED 10/4/00. EXTENSIVE DAMAGE TO POWER SECTION OF ENGINE DUE TO ENGINE OPERATION AFTER FIRST KNOWLEDGE OF MALFUNCTION. POSSIBLE CAUSE, LINK ROD BROKE AT LINK PIN AND DUE TO METAL FATIGUE. (X)Aug 6, 2000 · N5079S · Airtrc AT301 · Turbine SectionSDR 20000417SH012Pushrod · misinstalledENGINE VALVE PUSH RODS AND ROCKER ARMS WERE REVERSED DURING INSTALLATION ON THE NR 5 CYLINDER. SINCE THE INTAKE ROD IS LONGER AND ENGINE HAS SOLID TAPPETS, THE PUSH ROD ON THE EXHAUST SIDE BENT, AND THE ROCKER ARM BROKE RESULTING IN ENGINE FAILURE. ENGINE OPFeb 14, 2000 · N23043 · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR AU990910Impeller · damaged(AUS) COMPRESSOR SECOND STAGE IMPELLER VANES (2 OFF) FRACTURED AND SEPARATED. CAUSED BY EROSION OF VANES. DAMAGE TO INTERNAL COMPONENTS.Sep 6, 1999 · Airtrc AT301 · Turbine Engine Compressor SectionSDR AU980983Nut · missing(AUS) BRAKE MASTER CYLINDER PISTON TO SHAFT SECURING NUT MISSING.Aug 14, 1998 · Airtrc AT301 · Master Cylinder/Brake ValveSDR 98ZZZX2177Blade · failedBLADE FAILED DURING SPRAY TURN (AG OPERATOR), 11.75 INCHES CAME OFF ONE BLADE. NO VISUAL EVIDENCE OF INPACT DAMAGE. SUBMITTER STATED APPEARS TO BE A RESULT OF FATIGUE. AIRCRAFT LANDED IN FIELD WITHOUT DAMAGE OTHER THAN THAT CAUSED BY SEVERE VIBRATION.May 1, 1998 · N8869S · Airtrc AT301 · Propeller Blade SectionSDR 98ZZZX1000Cylinder · crackedTHE NR 2 CYLINDER WAS FOUND CRACKED FROM THE REAR SPARK PLUG PORT TO THE FRONT SPARK PLUG PORT ON THE UPPER INTAKE SIDE OF THE CYLINDER HEAD.Feb 18, 1998 · N3656C · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR AU971559Circuit Breaker · faulty(AUS) CIRCUIT BREAKERS FAULTY.Dec 16, 1997 · Airtrc AT301 · DC Power Distribution SystemSDR AU971496Indicator · faulty(AUS) TURN AND SLIP INDICATOR FAULTY. WHITE PAINT BEHIND SLIP BALL IS CRAZED AND FLAKING. ON/OFF FLAG IS PUSHED BACK ONTO TURN AND SLIP INDICATOR. INSTRUMENT FAILED AD/INST8 AMDT3.Dec 2, 1997 · Airtrc AT301 · Turn and Bank/Rate of Turn IndicatorSDR AU971495Circuit Breaker · faulty(AUS) CIRCUIT BREAKERS FAULTY.Dec 1, 1997 · Airtrc AT301 · DC Power Distribution SystemSDR AU971494Circuit Breaker · faulty(AUS) CIRCUIT BREAKERS FAULTY.Nov 28, 1997 · Airtrc AT301 · DC Power Distribution SystemSDR AU971556Cap · faulty(AUS) BATTERY VENT CAP VULCANISED CLOSED. GAS BUILDUP CAUSED ACID TO VENT FROM AN ADJACENT CELL.Oct 31, 1997 · Airtrc AT301 · Battery/Charger SystemSDR AU971493Circuit Breaker · faulty(AUS) ALL CIRCUIT BREAKERS FAILED TO MEET MANUFACTURERS REQUIREMENTS.Oct 25, 1997 · Airtrc AT301 · DC Power Distribution SystemSDR 97ZZZX3922Cylinder · crackedENGINE LOST POWER AFTER TAKEOFF. MADE FORCED LANDING INTO FIELD. SUBSTANTIAL DAMAGE TO AIRCRAFT. PILOT HAS MINOR INJURIES. INVESTIGATION HAS REVEALED THAT NR 1 CYLINDER HEAD CRACKED INTO 2 PIECES. SUBMITTER SUBMITTED SAFETY RECOMMENDATION FOR EVALUATION AAug 15, 1997 · N4411S · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR AU970602Actuator · failed(AUS) FLAP ACTUATOR OVER TRAVEL STOP SEPARATED CAUSING DAMAGE TO THE THREAD AND LOSS OF BALLS FROM THE BALLNUT ASSEMBLY - FOUND DURING DISASSEMBLY FOR INCORPORATION OF AD/AT/19 - SERVICE LETTER 140Jun 3, 1997 · Airtrc AT301 · Trailing Edge Flap ActuatorSDR 97ZZZX2001Cylinder · separatedAIRCRAFT EXPERIENCED A SUDDEN LOSS OF POWER. EMERGENCY LANDING MADE AT MOUNTAIN HOME AIR FORCE BASE. NR 9 CYLINDER HEAD HAD SEPARATED JUST ABOVE THE TOP OF PISTON TRAVEL. FATIGUE FRACTURE APPEARS TO ORIGINATE AT THE EXHAUST VALVE SEAT. 675 SMOH.Apr 21, 1997 · N4397S · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR AU970383Angle · cracked(AUS) LH INBOARD AND OUTBOARD WING ATTACHMENT ANGLES CRACKED IN THE AREA OF THE TOP RADIUS - CRACK LENGTHS 20MM TO 25MM BY 1MM DEEP (0.787IN TO 0.98IN BY 0.039IN DEEP) - CRACKING WAS FOUND WITH THE NAKED EYE AND CONFIRMED BY DYE PENETRANTJan 7, 1997 · Airtrc AT301 · Wing, Fuselage Attach FittingsSDR 96ZZZX4337Propeller · bolt brokeCOUNTERWEIGHT BOLT BROKE CAUSING AIRCRAFT TO PERFORM AN EMERGENCY LANDING AND NOSING OVER ON ITS BACK CAUSING EXTENSIVE DAMAGE TO THE AIRCRAFT.Aug 1, 1996 · N8883S · Airtrc AT301 · Propeller Hub SectionSDR EY2R9600670Clamp · corrodedCLAMP CORRODED.May 1, 1996 · Airtrc AT301 · Propeller AssemblySDR 96ZZZX2646Cam · crackedENGINE RAN ROUGH AND BACK-FIRED CAUSING THE PILOT TO MAKE AN EMERGENCY LANDING. THE ENGINE (FRONT) WAS DISASSEMBLED FINDING THE CAM CRACKED.Apr 22, 1996 · N36503 · Airtrc AT301 · Reciprocating Engine Power SectionSDR AU960441Bearing · broken(AUS) PROPELLER BLADE THRUST ROLLER BEARING PNO 70096 BROKEN INTO FIVE PIECES - THE OTHER BEARING WAS CRACKED, CORRODED AND HAD PIECESMISSING FROM THE ROLLER - INVESTIGATION FOUND MOISTURE HAD CAUSEDTHE BEARING TO RUST WHICH LED TO THE EVENTUAL BEARING FAILUREFeb 28, 1996 · Airtrc AT301 · Propeller AssemblySDR 95ZZZX5927Cylinder · head brokeCYLINDER HEAD BROKE AT EXHAUST VALVE ROCKER SHAFT ATTACHMENT PREVENTING THE ROCKER ARM FROM OPENING THE EXHAUST VALVE. THE ENGINE SUBSEQUENTLY QUIT AND THE AIRCRAFT CRASHED IN A FIELD.Sep 20, 1995 · N2362D · Airtrc AT301 · Reciprocating Engine Cylinder SectionSDR 95ZZZX6068Tube · crackedDURING ANNUAL INSPECTION, THE TUBE USED TO MOUNT ENGINE OIL TANK FOUND CRACKED AT THE RIGHT REAR TANK MOUNTING POINT. THE CRACK ENCIRCLED THE TUBE, BUT DID NOT MEET. DURING REPAIR, NO EVIDENCE OF INTERNAL CORROSION ON TUBING OTHER THAN AT CRACK AREA.Sep 5, 1995 · N73075 · Airtrc AT301 · Engine Mount SectionSDR 95ZZZX3639Magneto · shortedMAGNETO COVER ON RIGHT MAGNETO VIBRATED SCREWS LOOSE CAUSING COVER TO GROUND COIL KILLING MAGNETO WHICH CAUSED ENGINE FAILURE.May 25, 1995 · N36552 · Airtrc AT301 · Magneto/DistributorSDR 95ZZZX6700Cylinder · crackedTHE PILOT COMPLETED THE FIRST SWATH AND INITIATED A CLIMB TO REVERSE DIRECTION. WHILE THE AIRPLANE WAS IN A NOSE HIGH ATTITUDE AT ABOUT 200 FEET ABOVE THE GROUND, THE ENGINE LOST POWER. DURING THE FORCED LANDING TO A WHEAT FIELD, THE AIRCRAFT SUSTAINED STRUCMay 19, 1995 · N3655Z · Airtrc AT301 · Reciprocating Engine Cylinder Section
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