# Service difficulty reports: Pratt & Whitney PT6T-3 A list on [Pratt & Whitney PT6T-3](https://openairdocs.org/engine/pratt-whitney-pt6t-3.md). Newest first. General aviation reporting is voluntary. Page 1 of 9 · 421 reports - [SDR 2026FA0000648](https://openairdocs.org/sdr/2026FA0000648.md): Coupling · cracked · Aug 17, 2026 · N4247V · Skrsky S58JT · Main Rotor Drive System > CRACKED AROUND METAL ON COUPLING - [SDR 2025FA0000642](https://openairdocs.org/sdr/2025FA0000642.md): Static Inverter · overheated · Sep 12, 2025 · N282SD · Bell 412EP · AC Inverter > THE CREW CAME OUT FOR A TRAINING FLIGHT, STARTED THE AIRCRAFT JUST FINE AND IDLED ON DECK FOR A FEW MINUTES. UPON TAKE OFF THE #1 INVERTER SWITCH TURNED ITSELF OFF AND SUBSEQUENTLY LOST AUTOPILOT. WHEN THE INVERTER SWITCH WAS SWITCHED BACK TO ON THAT IS WHEN T - [SDR RV1R2020010800019](https://openairdocs.org/sdr/RV1R2020010800019.md): Elastomer · failed · Sep 30, 2019 · N962KW · Bell 412EP · Main Rotor Head > FAILED ELASTOMER FOUND DURING REMOVAL FOR MAST SEAL REPLACEMENT. THIS PART CAN ONLY BE INSPECTED WITH MR HUB DISASSEMBLED AND THE ONLY REQUIREMENT FOR THIS INSPECTION IS LOCATED IN THE 2500 HOUR AIRFRAME INSPECTION. THE AIRCRAFT IN QUESTION ONLY HAS 1800 HOU - [SDR 2019FA0000239](https://openairdocs.org/sdr/2019FA0000239.md): Bellcrank · loose · Aug 1, 2019 · N223JC · Bell 412EP · Aircraft Fuel Filter/Strainer > THE HELICOPTER EXPERIENCED A TORQUE AND RPM FLUCTUATION SHORTLY AFTER TAKE-OFF. A FAULTY AUTOMATIC FUEL CONTROL UNIT WAS REPLACED. DURING THE ENGINE RIGGING PROCESS, EXCESSIVE PLAY WAS NOTED IN THE DROOP COMPENSATOR ROD ASSEMBLY. FURTHER INSPECTION REVEALED - [SDR CA190622001](https://openairdocs.org/sdr/CA190622001.md): Amplifier · failed · Jun 14, 2019 · Bell 212 · Fire Detection > (CAN) IT WAS REPORTED TO BELL:DURING BUCKETING OPERATIONS AT APPROX 300 FEET ABOVE GROUND LEVEL, THE PILOT OBSERVED THAT THE #2 ENGINE FIRE LIGHT HAD ILLUMINATED. HE PILOT FOLLOWED THE EMERGENCY PROCEDURES FOR AN ENGINE FIRE INDICATION AND SUBSEQUENTLY DISCHAR - [SDR QMLA2016072516085](https://openairdocs.org/sdr/QMLA2016072516085.md): Windshield · cracked · Jul 25, 2016 · N87AM · Bell 412EP · Flight Compartment Windows > ON NR 1 ENGINE START UP THE CO-PILOT WINDSCREEN CRACKED APPROX. 28" ALONG THE LOWER EDGE. THE PILOT SHUT DOWN THE ENGINE AND WROTE UP THE DISCREPANCY. MECHANICS REPORTED THE DISCREPANCY TO MCAS AND THE AIR CRAFT WAS TAKEN OOS. A REQUEST FOR A SPECIAL FERRY PER - [SDR CA160126003](https://openairdocs.org/sdr/CA160126003.md): Hanger Assy · cracked · Jan 25, 2016 · Bell 212 · Tail Rotor Drive System > (CAN) CRACKS WERE FOUND ON EACH BOLT HOLE THAT CONNECTS THE TAIL ROTOR DRIVESHAFT HANGER BEARING AND COUPLING ASSY, PN 212-040-600-009 TO THE TAIL BOOM HANGER FITTING BARREL NUTS. - [SDR CA151110008](https://openairdocs.org/sdr/CA151110008.md): Filter · failed · Nov 3, 2015 · Bell 412 · Pneumatic Distribution System > (CAN) DURING A ROUTINE 100 HR P3 FILTER INSPECTION THE ENGINEER REMOVED THE P3 FILTER FROM THE POWER SECTION AND NOTICED THE SCREEN MATERIAL HAD SEPARATED FROM THE BASE OF THE FILTER. THE FILTER HAD BEEN O/H 60.3 HRS PREVIOUSLY ON PO 535474, JUNE 2015. THE FI - [SDR CA151103005](https://openairdocs.org/sdr/CA151103005.md): Cargo Hook · failed · Oct 26, 2015 · Bell 212 · Cargo Compartments > (CAN) INADVERTENT RELEASE OF A LOAD DURING LONGLINE OPERATION. SUSPECT THAT THE SWIVEL USED DID NOT OPERATE CORRECTLY AND IN TURN ALLOWED THE LONGLINE TO TWIST AND GAIN ENERGY. SUSPENSION ASSY IS PROTECTED WITH RUBBER ON THE OUTSIDE SURFACE WHERE IT IS DESIGN - [SDR CA150911005](https://openairdocs.org/sdr/CA150911005.md): Engine · power loss · Sep 2, 2015 · Bell 412EP · Engine (Turbine/Turboprop) > (CAN) WHILE ON APPROACH THE ACFT LOST POWER FROM NR 2ENGINE. CREW MADE A EMERGENCY CALL OUT AND TOOK APPROPRIATE EMERGENCY ACTION TO STABILIZE THE FLIGHT FOR SINGLE ENGINE OPERATIONS AND DIVERTED. WHILE ENROUTE, THE CREW SUCCESSFULLY RESTARTED NR 2 ENGINE UTI - [SDR CA150820005](https://openairdocs.org/sdr/CA150820005.md): Fuel Control · malfunctioned · Aug 12, 2015 · Fuel Control/Turbine Engines > (CAN) ACFT WAS LANDING WHEN 1 OF ITS ENGINES LOST POWER. PILOT THEN LANDED THE ACFT UNEVENTFULLY. P3 LINE WAS FOUND BROKEN. THE TUBING WAS REPLACED AND ACFT RETURNED TO SERVICE. - [SDR CA150727014](https://openairdocs.org/sdr/CA150727014.md): Clutch · slipped · Jul 24, 2015 · Bell 412EP · Emergency Equipment > (CAN) ON HOIST OPERATION, THE RESCUE SPECIALIST REPORTED A SLIPPAGE FROM THE HOIST CABLE WHILE DESCENDING ON THE SITE. THE UNIT IS NOT INCLUDED IN THE LIST OF AFFECTED HOISTS CALLED ASB 44301-10-15 AND BY AD 2013-06-51. THE HOIST HAS ACCUMULATED A TOTAL OF 15 - [SDR CA150709001](https://openairdocs.org/sdr/CA150709001.md): Bearing · separated · Jun 26, 2015 · Bell 412EP · Main Rotor Head > (CAN) THE QUALITY OF RIDE IN THE HELICOPTER DEGRADED AND THE HUMS SYSTEM ALSO HAD INDICATED AN ISSUE. DURING THE INVESTIGATION, IT WAS FOUND THAT THE PIVOT BEARING HAD SEPARATED FROM THE SPINDLE ASSY. THE SPINDLE ASSY WAS REMOVED AND AN O/H ASSY INSTALLED. S - [SDR CA150710012](https://openairdocs.org/sdr/CA150710012.md): Engine · failed · Jun 25, 2015 · Engine (Turbine/Turboprop) > (CAN) DURING APPROACH AT 400-500 FT ALTITUDE, PILOT HEARD A BANGING SOUND, NR 2 ENGINE OIL PRESSURE DROPPED, TEMPERATURE WAS RAISING, CHIP LIGHT ILLUMINATED. PILOT MAINTAINED THE ENGINE NR 1 TORQUE AT 55 PERCENT WHILE NR 2 TORQUE WAS AT ZERO. PILOT SAFELY LAN - [SDR CA150529005](https://openairdocs.org/sdr/CA150529005.md): Crosstube · broken · May 27, 2015 · Bell 212 · Main Landing Gear > (CAN) CROSS TUBE BROKE AT LT AIRFRAME SUPPORT, UNDER THE STEEL WEAR PLATES. - [SDR CA150602010](https://openairdocs.org/sdr/CA150602010.md): Engine · overtemp · May 16, 2015 · Bell 412EP · Engine (Turbine/Turboprop) > (CAN) REPORTED THAT DURING A TRAINING FLIGHT, ENGINE NR 1 OVERTEMPED WHEN GOVERNOR WAS SWITCHED FROM AUTO TO MAN WITH N1 AT 70 PERCENT. GROUND INSPECTION PERFORMED AND DEBRIS FOUND AT ENGINE NR 1 EXHAUST AREA WITH DENTS NOTED IN THE EXHAUST DUCTS, FIELD SERVI - [SDR CA150325021](https://openairdocs.org/sdr/CA150325021.md): Packing · leaking · Mar 19, 2015 · Bell 412 · Turbine Engine Oil System > (CAN) DURING A ROUTINE PASSENGER FLIGHT, AT FULL THROTTLE, AN OIL PRESSURE CAUTION WARNING CAME ON FOLLOWED BY AN ITT SURGE ABOVE 900 DEG C. CREW ELECTED TO SHUTDOWN THE ENGINE. OIL SPILL ON GROUND NOTICED AFTER SHUTDOWN. MAINTENANCE CREW DETERMINED THE CAU - [SDR CA141202017](https://openairdocs.org/sdr/CA141202017.md): Compressor · damaged · Nov 8, 2014 · Bell 212 · Turbine Engine Compressor Section > (CAN) ACFT CAME BACK FROM A FLIGHT FOR REFUEL. ENGINE START AFTER THE REFUEL WAS OK. AS THE PILOT STARTED PULLING THE COLLECTIVE, THE LT PS WAS SURGING/VIBRATION WAS FELT, ITT WENT HIGH, PILOT SHUTDOWN THE ENGINE. COMPRESSOR DAMAGE WAS OBSERVED. CUSTOMER ALR - [SDR CA141202002](https://openairdocs.org/sdr/CA141202002.md): Engine · making metal · Nov 3, 2014 · Bell 412EP · Engine (Turbine/Turboprop) > (CAN) BEFORE TAKEOFF, PILOT REPORTED THAT THE CHIP DETECTOR CAUTION LIGHT WAS ILLUMINATED, THUS THE PILOT PROCEEDED TO SHUTDOWN THE ENGINE AND THE FLIGHT WAS ABORTED. METAL FLAKES FOUND ON THE CHIP DETECTOR WERE SENT TO THE LAB FOR ANALYSIS. - [SDR 9EKA20141030012](https://openairdocs.org/sdr/9EKA20141030012.md): Oil Cooler · cracked · Oct 29, 2014 · N414EV · Bell 412EP · Engine Fuel/Oil Cooler > DURING 1000 HOUR INSPECTION OF OIL COOLERS MULTIPLE CRACKS ON VANE WELDS WERE FOUND. - [SDR CA140917001](https://openairdocs.org/sdr/CA140917001.md): Pressure Switch · leaking · Sep 16, 2014 · Bell 212 · Turbine Engine Oil System > (CAN) DURING POST FLIGHT INSPECTION NR 1 ENGINE DECK WAS FOUND TO HAVE FOIL/OIL RESIDUE ON IT BUT NO SOURCE OF THE LEAK WAS FOUND. WITH THE INDUCTION COWL REMOVED AND BOOST PUMP PRESSURE APPLIED FUEL WAS FOUND SEEPING OUT THE DIFFERENTIAL PRESSURE SWITCH AND R - [SDR CA140908028](https://openairdocs.org/sdr/CA140908028.md): Yoke · unserviceable · Sep 4, 2014 · Bell 412EP · Tail Rotor Head > (CAN) DURING THE DAILY INSPECTION IT WAS NOTICED THAT 1 TAIL ROTOR YOKE FEATHERING BEARING OUTER RACE STAKE HAD FAILED. UPON FURTHER INVESTIGATION ALL 4 TAIL ROTOR YOKE FEATHERING BEARING OUTER RACE STAKES HAD FAILED. - [SDR CA140721023](https://openairdocs.org/sdr/CA140721023.md): Fitting · cracked · Jul 19, 2014 · Bell 212 · Main Rotor Head > (CAN) WHILE PERFORMING A DAILY INSPECTION OF THE ACFT, THE AME NOTICED A THIN BLACK LINE ON THE OUTER END OF THE DRAG BRACE FITTING. AFTER FURTHER INVESTIGATION INCLUDING PAINT REMOVAL FROM THE AFFECTED AREA, THE AME DETERMINED THE FITTING TO BE CRACKED. THE - [SDR CA140716009](https://openairdocs.org/sdr/CA140716009.md): Crosstube · cracked · Jul 13, 2014 · Bell 212 · Main Landing Gear > (CAN) PILOT ON FIRE FIGHTING OPERATIONS HEARD LOUD SNAP SOUND ON LANDING AND ABORTED THE TAKE-OFF. HIGH FORWARD CROSSTUBE FOUND CRACKED OTBD OF LT SADDLE FITTING. COMPONENT TIMES KEPT IAW ACCESSORIES AERT SB AA-08055, REV B AND ALERT SB 212-09-132, REV A, LAN - [SDR CA140710003](https://openairdocs.org/sdr/CA140710003.md): Torque Tube · sheared · Jul 8, 2014 · Bell 412 · Main Rotor Mast/Swashplate > (CAN) DURING A NORMAL APPROACH OF 75% TORQUE THE PILOT NOTICED THE MAST TORQUE INCREASE TO OVER 110% WHILE THE ENGINE TORQUES REMAINED UNCHANGED. HE LANDED IN A FIELD 10 MILES SOUTH AND CALLED IN THAT HE HAD AN OVERTORQUE. THE MONO POLE SENSOR, SIGNAL CONDITIO - [SDR CA140701013](https://openairdocs.org/sdr/CA140701013.md): Oil System · failed · Jun 28, 2014 · Turbine Engine Oil System > THE ENGINE NR 2 LOST OIL IN FLIGHT. THE PILOT PERFORMED AN IFSD OF ENGINE NR 2 AND AN UNEVENTFUL EMERGENCY LANDING WITH 1 ENGINE INOPERATIVE (OEI). ON GROUND TROUBLESHOOTING ON-GOING. - [SDR SAJF2014062603020](https://openairdocs.org/sdr/SAJF2014062603020.md): Engine · leaking · Jun 16, 2014 · N398EH · Bell 212 · Engine (Turbine/Turboprop) > DURING FLIGHT AFTER 5 HOURS AFTER TAKEOFF, THE PILOT OBSERVED LOW OIL QTY ON NR 2 ENG & NORMAL OIL PRESS WAS MAINTAINED. AFTER INTERVAL DISCUSSION, PILOT CHOSE TO DIVERT FOR AN UNEVENTFUL LANDING. DURING GND INSPECTION, OBVIOUS OIL LEAKAGE UNDER COMPRESSOR R - [SDR CA140602018](https://openairdocs.org/sdr/CA140602018.md): Gearbox · making metal · May 8, 2014 · Engine (Turbine/Turboprop) > (CAN) THE PILOT SHUTDOWN THE ENGINES AND ABORTED THE TAKEOFF DUE TO A CHIP DETECTOR INDICATION ON THE COMBINING GEARBOX. - [SDR CA140826021](https://openairdocs.org/sdr/CA140826021.md): Cotter Pin · obstructed · Mar 23, 2014 · Fuel Control/Turbine Engines > (CAN) DURING A TRAINING FLIGHT, PILOTS NOTICED THAT ENGINE NR 2 FAIL WARNING LIGHT APPEARED. ITT WAS 136 CELSIUS. PILOTS STARTED EMERGENCY PROCEDURE AND THE HELICOPTER LANDED SAFELY. INVESTIGATION FOUND THAT THAT NO FUEL PASSED THROUGH THE AFCU. DURING REMOVAL - [SDR CA140305006](https://openairdocs.org/sdr/CA140305006.md): Bearing · failed · Mar 5, 2014 · Bell 412 · Engine Oil Cooler > (CAN) ON A COMBINING GEAR BOX REMOVAL, AME NOTICED A LARGE AMOUNT OF BLACK FRETTING MATERIAL BETWEEN THE C BOX AND BLOWER JOINT FLANGE. ONCE CLEANED UP THE AME WAS ABLE TO SEE THAT THE OUTER RACE OF THE BEARING ON THE BLOWER WAS ROTATING IN THE BLOWER CASTING - [SDR CA140224024](https://openairdocs.org/sdr/CA140224024.md): Bearing · failed · Feb 13, 2014 · Bell 412 · Engine Oil Cooler > (CAN) ON C BOX REMOVAL THE OIL COOLER BLOWER ON NR 2 SIDE HAD BOTH FWD AND REAR BEARINGS BEGINNING TO FAIL. GREASE HAD BEEN EJECTED FROM FWD BEARING ALONG WITH A BURNED ODOR. SHOP TECH: BEARING FAILED IN SERVICE. NO INDICATION OF CAUSE. IT APPEARS THE FAI - [SDR CA131216016](https://openairdocs.org/sdr/CA131216016.md): Frame · cracked · Dec 13, 2013 · Bell 212 · Main Rotor Head > (CAN) WHILE SCHEDULED MAINTENANCE WAS CARRIED OUT ON THE STABILIZER BAR, THE CENTER FRAME WHICH HAS 111.3 HRS REMAINING TO IT`S SCHEDULED RETIREMENT LIFE OF 10,000 HOURS, IT WAS DISCOVERED TO HAVE A CRACK APPROXIMATELY.7500" AROUND THE RADIUS OF THE BEARING S - [SDR CA131216002](https://openairdocs.org/sdr/CA131216002.md): Coupling · loose · Dec 3, 2013 · Turbine Engine Reduction Gear > (CAN) THE PILOT REPORTED THAT BOTH POWER SECTION CHIP LIGHTS CAME ON IN FLIGHT. HE DECLARED AN EMERGENCY AND LANDED. MAINTENANCE FOUND A LITTLE FUZZ ON BOTH CHIP DETECTORS. THEY FLUSHED THE OIL SYSTEM AND PUT IN NEW OIL. WHEN THEY STARTED THE ENGINES AFTER - [SDR CA131118006](https://openairdocs.org/sdr/CA131118006.md): Gear · failed · Nov 5, 2013 · Bell 412EP · Turbine Engine Reduction Gear > (CAN) THE ACFT RETURNED TO BASE WITHOUT COMPLETING ITS MISSION DUE TO ENGINE NR 2 CHIP WARNING. THE AFFECTED POWER SECTION WAS APPARENTLY SHUTDOWN. POST FLIGHT INSPECTION REVEALED SIGNIFICANT METAL DEBRIS IN THE NR 2 POWER SECTION RGB CHIP DETECTOR. THE RGB - [SDR CA131007008](https://openairdocs.org/sdr/CA131007008.md): Fuel Heater · leaking · Sep 29, 2013 · Bell 412 · Engine Fuel/Oil Cooler > (CAN) SIGNIFICANT FUEL LEAK NOTED ON NR 1 ENGINE DURING GROUND OPERATIONS. LEAK CONFIRMED AS CRACKED WELD ON OIL TO FUEL HEATER. - [SDR CA130920017](https://openairdocs.org/sdr/CA130920017.md): Bearing · broken · Sep 20, 2013 · Turbine Section > (CAN) UPON DISASSEMBLY OF POWER TURBINE, THE NR 4 MAIN BEARING WAS FOUND WITH 2 OF THE 4 MOUNTING CORNERS BROKEN OFF AND A 3RD CRACKED. THERE WAS SOME WEAR ON THE FACE OF THE BEARING MOUNTING SURFACE OF THE PT SHAFT HOUSING, NO OTHER DAMAGE WAS SEEN AROUND THE - [SDR CA130911017](https://openairdocs.org/sdr/CA130911017.md): Engine · shutdown · Sep 4, 2013 · Engine (Turbine/Turboprop) > (CAN) JUST AFTER TAKEOFF, THE PILOT ELECTED TO PERFORM AN ENGINE SHUTDOWN. THE REASON OF THE FORCED ENGINE SHUTDOWN IS UNKNOWN. - [SDR CA131104006](https://openairdocs.org/sdr/CA131104006.md): Bearing · worn · Jul 23, 2013 · Turbine Section > (CAN) POWER SECTION WAS REMOVED FROM OPERATORS ACFT DUE TO METAL GENERATION. THIS ENGINE HAD A TSN OF 1415.93 AND WAS IN FOR ITS FIRST SHOP VISIT SINCE MFG. THE POWER TURBINE SECTION WAS REMOVED AND DISASSEMBLED TO AFFORD ACCESS TO THE NR 3 AND NR 4 BEARINGS - [SDR CA130815004](https://openairdocs.org/sdr/CA130815004.md): Rod End · worn · Jul 20, 2013 · Bell 212 · Main Rotor Head > (CAN) BEARING LINER GONE, EXCESSIVE WEAR BETWEEN BALL AND BEARING OUTER HSG. - [SDR CA130726004](https://openairdocs.org/sdr/CA130726004.md): Blade · debonded · Jul 19, 2013 · Bell 412 · Tail Rotor Blades > (CAN) WHILE CARRYING OUT A 25 HOUR INSPECTION, PERFORMED A TAP TEST WITH A BELL TAP HAMMER, FOUND THE EROSION STRIP PARTIALLY DEBONDED. TAIL ROTOR HUB AND BLADE ASSY, PN 212-011-701-123, TAIL ROTOR BLADE, PN 212-010-750-127FM. - [SDR CA130410013](https://openairdocs.org/sdr/CA130410013.md): Fuel Line · chafed · Apr 10, 2013 · Bell 212 · Engine Fuel Distribution > (CAN) DURING A AFCU REPLACEMENT ON NR 1 ENGINE, THE FUEL TUBE, FROM AFCU TO MFCU WAS FOUND CHAFING ON BRAKET, PN 412-060-024-101, PARTS OF TB 212-11-211. - [SDR CA130416012](https://openairdocs.org/sdr/CA130416012.md): Engine · shutdown · Apr 4, 2013 · Bell 412EP · Engine (Turbine/Turboprop) > (CAN) IN PREPARATION OF THE ENGINE SHUTDOWN, ENGINES THROTTLES WERE BROUGHT DOWN TO FLIGHT IDLE, APPROXIMATELY 80 PERCENT NR, ALLOWING FOR COOLING PERIOD. ALL OF A SUDDEN AND COMPLETELY UNEXPECTED, THERE WAS AN OVERSPEED OF THE ENGINE NP 1 NR AND N2 OF UP TO - [SDR CA130327004](https://openairdocs.org/sdr/CA130327004.md): Inverter · failed · Mar 18, 2013 · Bell 212 · AC Inverter > (CAN) DURING A TRAINING FLIGHT THE INVERTER FAILURE NR 2 WARNING LIGHT CAME ON. AT APPROXIMATELY THE SAME TIME SMOKE WAS DETECTED IN THE CABIN. EMERGENCY WAS DEALT WITH IAW THE CHECK LIST. AFTER LANDING AT MAINTENANCE FACILITY, THE AME QUICKLY DETERMINED TH - [SDR CA130128024](https://openairdocs.org/sdr/CA130128024.md): Wire · chafed · Jan 28, 2013 · Bell 412 · Instrument System Wiring > (CAN) PILOT REPORTED LATERAL CYCLIC IMPULSES FELT IN ALL FLIGHT REGIMES WITH AUTO PILOT SELECTED ON ONLY. EXTENSIVE TROUBLESHOOTING WAS CARRIED OUT OVER A 3 WEEK PERIOD. THE FINAL RECERTIFICATION OF THE PROBLEM WAS THE REPLACEMENT OF WIRE C943D22, WHICH WAS F - [SDR CA130117002](https://openairdocs.org/sdr/CA130117002.md): Blades · broken · Dec 31, 2012 · Turbine Engine Compressor Section > (CAN) AFTER TAKING OFF FROM HELIPAD AT 400 FT ABOVE GROUND LEVEL, AN ABNORMAL NOISE SIMILAR TO ENGINE SURGE NOISE WAS HEARD BY PILOTS FOLLOWED BY ODOR OF FUEL IN THE CABIN, RAPID RISE OF NR 2 ENGINE INTER TURBINE TEMPERATURE, ITT, AND ENGINE OIL TEMPERATURE, B - [SDR CA121206003](https://openairdocs.org/sdr/CA121206003.md): Fitting · worn · Dec 4, 2012 · Bell 212 · Main Rotor Head > (CAN) UPON PURGING WITH GREASE OF THE MAIN ROTOR GRIP IT WAS NOTICED THAT GREASE WOULD NOT COME OUT OF THE VENT FITTING AT THE TOP OF THE GRIP. THE ROTOR HUB WAS REMOVED AND DISASSEMBLED TO FIND EXCESSIVE WEAR ON THE FITTING AT THE SEAL CONTACT AREA ALLOWING - [SDR CA121115006](https://openairdocs.org/sdr/CA121115006.md): Link · failed · Nov 10, 2012 · Bell 412 · Main Rotor Gearbox > (CAN) DURING 600 HR INSPECTION OF ACFT, LIFT LINK BEARINGS WERE FOUND SPINNING WITHIN BORE. OEM HAS NO REQUIRED INSPECTION OF THIS COMPONENT AND THIS IS NOT AN ISOLATED CASE. - [SDR CA121022005](https://openairdocs.org/sdr/CA121022005.md): Line · broken · Sep 27, 2012 · Bell 412EP · Engine Bleed Air System > (CAN) THIS HELICOPTER HAS EXPERIENCED ITS SECOND BROKEN P3 AIR LINE, IN 600 HOURS ON ENGINE NR 1. THE PREVIOUS EVENT WAS WITH PS TH0727 IN THE SAME POSITION ON THE ACFT. - [SDR CA120824003](https://openairdocs.org/sdr/CA120824003.md): Transistor · failed · Aug 22, 2012 · Bell 412 · Flight Compartment Lighting > (CAN) WHEN THE DIM FUNCTION ON THE CONSOLE IS UTILIZED FOR THE INSTRUMENT LIGHTING, THE CIRCUIT BREAKER TRIPS. TRANSISTOR, PN 130-007-1 USED IN THE SYS HAS FOUND A GROUND ON THE BASE OR CASE. THE INSULATOR SEPARATING TRANSISTOR FROM ALUMINUM BRACKET IS A PLAS - [SDR CA120808006](https://openairdocs.org/sdr/CA120808006.md): Bearing Cage · making metal · Jul 30, 2012 · Bell 212 · Main Rotor Gearbox > (CAN) MIDDLE BEARING OUTTER RACE SPALLING. BEARING CAGE BROKEN. Next page: https://openairdocs.org/engine/pratt-whitney-pt6t-3/reports.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 engine_model_key = 'PT6T3' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/pratt-whitney-pt6t-3/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.