JASC 6310
Service difficulty reports · 772
Reports filed under 6310 · Engine/Transmission Coupling, newest first.
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 jasc_code = '6310' 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.
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 jasc_code = '6310' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR EVCA2012022600030Freewheel Unit · dislodgedFREEWHEELING ASSY AFT CAP BEARING SEPARATED FROM THE HSG ASSY, WHICH RESULTED IN LOSS OF TRANSMISSION OIL.SDR CA120228021Bearing · failed(CAN) INPUT MODULE WAS REMOVED FROM ACFT 920047 DUE TO A RIVET HEAD FOUND ON THE INPUT MODULE CHIP DETECTOR. OUR FINDINGS DURING DISASSEMBLY WERE, FIRST, THE SOURCE OF RIVET HEAD IS THE BEARING, PN: SB1074-101 SN: 10245. THE CONDITION OF THE BEARING WAS UNSSDR EVCA2012012600027Freewheel Unit · dislodgedFREEWHEELING ASSY AFT CAP BEARING SEPARATED FROM THE HOUSING ASSY, WHICH RESULTED IN LOSS OF TRANSMISSION OIL.SDR 2012FA0000073Magnetic Seal · leakingOIL FOUND ON ENGINE DECK DURING ALF CHECK. LEAK WAS DETERMINED TO COME FROM THE FRONT MAGNETIC SEAL OF THE FREEWHEEL SHAFT. LEAK RATE WAS MEASURED AT 11.94 ML/H. MAX LEAK RATE ALLOWED IS 10 ML/H AS SPECIFIED IN MFG TROUBLESHOOTING BOOK 71-00-06-816-804-B01.SDR CA111208005Clutch · broken(CAN) CLUTCH ACTUATOR MOTOR FOUND UNSERVICEABLE DURING 100 HR INSPECTION. MOTOR CASE SPINS FREELY WITH SET SCREW INSTALLED. SAFETY CABLE BROKEN. CLUTCH ACTUATOR REPLACED.SDR CA111208010Clutch · failed(CAN) PILOT NOTED A SUDDEN YAW MOVEMENT IN FLIGHT AND MECHANICAL NOISE. CLUTCH ASSEMBLY REPLACED.SDR CA111109010Freewheel Unit · making metal(CAN) METAL SLIVERS FOUND ON CHIP PLUG DURING DAILY INSPECTION. REMOVED FREEWHEEL UINT AND SEVERAL MORE SLIVERS WERE FOUND IN THE FREEWHEEL HSG. FREEWHEEL UNIT SENT TO MFG SERVICE CENTER FOR DISASSEMBLY AND INVESTIGATION. METAL SLIVERS WERE MAX .5" BY .005".SDR CA110927002Actuator · intermittent(CAN) CLUTCH ACTUATOR INTERMITTENT. FOUND INTERMITTENT WIRE CONNECTION TO MOTOR. CLUTCH ACTUATOR REPLACED.SDR CA110902004Actuator · failed(CAN) CLUTCH ACTUATOR FOUND INOPERABLE DURING GROUND RUN FOLLOWING 50 HR INSPECTION. CLUTCH ACTUATOR REPLACED.SDR CA110809004Clutch · failedACFT EXPERIENCING SHUTTER, BUFFETING SOUND, SMALL LOSS IN POWER SOMETIMES VERY SMALL OVERSPEED ON ENGINE TACH. CONTACTED MFG AND IT WAS DECIDED THE CLUTCH SHOULD BE REPLACED AS IT WAS TYPICAL WITH OTHER ACFT EXPERIENCING CLUTCH SLIPPAGE. ONCE REMOVED THE CLUTSDR 3PRA2011061400001Freewheel Unit · lockedON INSPECTION OF MAIN GEARBOX CHIP DETECTOR AND SCREEN, METAL WAS FOUND. ON FURTHER INSPECTION OF MAIN GEARBOX FOUND THE NR 1 INPUT FREEWHEEL UNIT LOCKED UP.SDR CA110527004Sprag Clutch · crackedNOISE HEARD ON SHUTDOWN. CLUTCH DISASSEMBLED AND INSPECTED. FOUND THE SPRAG CLUTCH CAGE CRACKED IN SEVERAL PLACES, ALSO INDIVIDUAL SPRAGS CRACKED.SDR HEEA131204Coupling · failedNR1 ENGINE DRIVE FLANGE AND COUPLING ASSY FAILED CAUSING ENGINE OVERSPEED SHUTDOWN.SDR CA110530006Clutch Actuator · failed100 HR INSPECTION FOUND CLUTCH ACTUATOR DOWN LIMIT STOP FAILED. CLUTCH ACTUATOR REPLACED.SDR CA110406013Clutch · failed(CAN) WHILE PREFORMING ACFT MFG SB-79, METAL PARTICLES AND CHUNKS WERE FOUND IN THE FLUID FROM THE SPRAG CLUTCH. PART WILL BE RETURNED TO ACFT MFG FOR EVALUATION/REPAIR.SDR 2011FA0000230Bolt · shearedHELICOPTER DEPARTED ON A TRAINING FLIGHT. 30 MINUTES INTO THE FLIGHT, INSTRUCTOR FELT A JOLT OF ACFT FOLLOWED BY A LOUD BANGING. ENGINE PARAMETERS ALSO ERRATIC. INSTRUCTOR ELECTED TO REDUCE POWER & ENTER AN AUTOROTATION. SELECTED A CLEAR AREA AND SET UP FSDR CA110310011Seal · failed(CAN) WHILE PREFORMING SB-79 AND INSTALLING THE NEW RETAINERS, PN C168-5 ON THE CLUTCH HOUSING. HAD THREE SEALS THAT WERE UNDERSIZED BY 0.010"-0.015" CAUSING THEM NOT TO SEAL AGAINST THE RETAINER. THE PROPER SIZED SEALS ARE AN INTERFERENCE FIT NEEDING TO BE SDR HEEA130138Seal · not seatedTRANSMISSION LOW OIL PRESSURE LIGHT ILLUMINATED. FOUND FREE WHEELING UNIT AFT CAP SEAL UNSEATED.SDR CA110131004Upper Sheave · worn(CAN) UPPER SHEAVE WORN BEYOND LIMITS.SDR CA110131003Bearing · seized(CAN) FAN SHAFT ASSY WAS REMOVED DURING 100 HR INSPECTION. WHEN THE ASSY WAS TO BE RE-INSTALLED THE MOUNTING BOLT FOR THE CLUTCH ACTUATOR COULD NOT BE INSERTED. WEAR MARKS WERE NOTED ON THE MOUNTING FLANGE.SDR CA110126007Orifice · obstructed(CAN) NOTICED TORQUE INDICATION WAS FLUCTUATING AND GIVING INACCURATE INDICATION. UPON RETURN OF ENGINE GEARBOX TO THE OVERHAUL FACILITY, PARTICULATE WAS FOUND IN THE TORQEMETER ORIFICE. GEARBOX WAS REPAIRED, RETURNED AND RE-INSTALLED. SYSTEM WAS GROUND AND FLSDR 2010FA0001190Actuator · inoperativeDURING 100 HR, ANNUAL INSP, BELT TENSION ACTUATOR (PN A051-1) WOULD NOT OPERATE PROPERLY TO FACILITATE NECESSARY CHECKS/INSP. DURING TROUBLESHOOTING, IN-LINE FUSE FOR ELECTRIC GEAR MOTOR ASSY (PN A051-2) HAD BLOWN. CONDUCTED TROUBLESHOOTING IAW MM TO ISOLATESDR CA101112004Clutch · failed(CAN) AFTER SHUTDOWN, PILOT DID NOT SEE A NEEDLE SPLIT BETWEEN ROTOR SPEED, AND N2, BUT RATHER THE NEEDLES STAYED MARRIED. ENGINEER DISPATCHED TO AIRCRAFT WHO SPUN THE BLADES FORWARD AND OBSERVED THAT THE POWER TURBINE WAS ALSO ROTATING WHEN VIEWED THROUGH THSDR CA101122015Actuator · intermittent(CAN) CLUTCH ACTUATOR WOULD NOT DISENGAGE. MULTIPLE INTERMITTENT FAILURES OF CLUTCH ACTUATOR OCCURRED BEFORE UNIT WAS REPLACE. ON REMOVAL CLUTCH ACTUATOR WIRES WERE FOUND TO BE BADLY CHAFED. AT THE TIME OF CLUTCH ACTUATOR REPLACEMENT, DRIVE BELTS WERE FOUNDSDR CA101025009Switch · failedSWITCH FAILURE. CLUTCH ACTUATOR ASSEMBLY REPLACED.SDR CA100928016Sprag Clutch · failed(CAN) ON TAKEOFF THE PILOT HEARD A LOUD BANG FOLLOWED BY A LEFT YAW OF THE AIRCRAFT. THE PILOT IMMEDIATELY PERFORMED A PRECAUTIONARY LANDING AND SHUT DOWN THE AIRCRAFT DOWN. ON SHUTDOWN A GRINDING NOISE WAS HEARD FROM THE SPRAG CLUTCH AREA. AN ENGINEER WAS DSDR CA100805015Clutch · failedTHE PILOT REPORTED A LOUD BANG AND A MOMENTARY YAW WHILE IN CRUISE FLIGHT. THE CLUTCH ASSY WAS REPLACED.SDR CA100805014Clutch · failedTHE PILOT REPORTED A LOUD BANG AND A MOMENTARY YAW WHILE IN CRUISE FLIGHT. THIS HAPPENED MORE THAN ONCE IN THE LAST 250 HRS. THE CLUTCH ASSY (FREEWHEEL) IS SUSPECTED TO HAVE SLIPPED IN FLIGHT. THE CLUTCH ASSY WAS REPLACED WITH NO RECURRENCE SINCE. WHILE FREESDR CHIR06112010001Quill Shaft · cracked(CHIR) DURING COMPLIANCE WITH SB 107-63-1005, FOUND THAT THE QUILL SHAFT HAD A VERY SMALL CRACK COMING FROM THE AREA AROUND THE PIN HOLE. THE QUILL SHAFT HAS A TT OF 325.6 HRS. THE SN IS KA0369 AND IT IS ON WO 126921. THE AD NR THAT IS ESTABLISHED FOR THIS PASDR CA101027007Sprag Assy · crackedDURING T/O, BANG HEARD BY PILOT, ABORTED T/O. CONFIRMED SUSPECTED SPRAG FAILURE DIAGNOSIS WITH HELICOPTERS AND PILOTS REPORTED SYMPTOMS. CLUTCH ASSY REPLACED IN FIELD. DIAGNOSIS FURTHER CONFIRMED BY DIASSASEMBLY OF RETURNED SPRAG UNIT BY MFG.SDR CA100610004Bearing · spalledDURING FINAL APPROACH TO AIRPORT FREEWHEEL CHIP LIGHT ILLUMINATED. FUTHER INVESTIGATION REVEALED OIL SYS METAL CONTAMINATION. FWD DUPLEX BEARING IN FREEWHEEL ASSY FOUND MAKING METAL FREEWHEEL ASSY REMOVED FROM SERVICE AND FREEWHEEL REPLACED NEW. OIL SYS FLUSSDR CA100430004Clutch · seized(CAN) UNUSUAL NOISE DETECTED BY THE PILOT ON SHUT DOWN. FURTHER INVESTIGATION REVEALS SEIZED FREEWHEEL. FREE WHEEL REMOVED AND SENT TO INVESTIGATION TO SKYLINE HELICOPTERS. A REPORT WILL BE SUBMITED SHORTLY.SDR CA100422010Actuator · failedTHE ACFT WOULD NOT START, CLUTCH ACTUATOR FAILED, ACFT FERRIED ON FLIGHT PERMIT TO REPAIR FACILITY AND CLUTCH ACTUATOR REPLACED. ACFT RETURNED TO ORIGINAL C OF A.SDR EVCA1821Bearing · flakingINTERMITTENT TRANSMISSION CHIP LIGHT IN FLIGHT, DISASSEMBLED TRANSMISSION AND FOUND SEVERAL PLANETARY ROLLER BEARINGS FLAKING AND PITTING.SDR CA100804024Bracket · looseDURING FLIGHT, PILOT REPORTED A LOUD THUMP, THE CLUTCH LIGHT ILLUMINATED AND WOULD NOT GO OUT. INVESTIGATION FOUND THAT ALL 8 RIVETS ATTACHING THE LOWER ACTUATOR BEARING BRACKETS, TO THE FAN SCROLLS HAD SHEARED, ALLOWING THE LOWER ACTUATOR BRG TO COCK TO THSDR CA091113004Seal · leaking(CAN) DURING A NIGHT FLIGHT, PILOT NOTICED DECREASE IN TRANSMISSION OIL PRESSURE. ON LANDING (STILL HAD SOME PRESSURE INDICATION) FOUND OIL ALL OVER THE ENG COMPARTMENT AND THAT THE AFT FREEWHEEL ADAPTER SEAL PN: 209-340-265-103 HAD COME OUT OF THE AFT ADAPTESDR CA091026003Sprag Clutch · unserviceable(CAN) WHILE INCREASING THROTTLE TO FLIGHT RPM, WHEN RPM WAS AT APPROX 90 PERCENT, A LOUD BANG FOLLOWED BY GRINDING NOISE WAS HEARD AND FELT. THIS WAS ACCOMPANIED BY AN OBSERVED INCREASE OF THE ENG RPM TO OVER 115 PERCENT (TOP OF THE INDICATIONS ON THE GAGE) ROSDR 2011FA0000663Drive Shaft · brokenHELICOPTER WAS TOOK OFF EMPTY FROM LANDING PAD TO SURVEY AREA. DURING TAKEOFF A "POPPING" SOUND WAS HEARD BY PILOT AND GROUND CREW AND THE ACFT WOULD NOT DEVELOP SUFFICIENT ENGINE TORQUE TO CLEAR TERRAIN. FOLLOW UP TO ACCIDENT FOUND ENGINE DRIVE SHAFT HAD SESDR CA090901012Shaft · wornUPON DISASSEMBLY FOR COMPANY CLUTCH MID LIFE INSP THE FOLLOWING WAS FOUND, SHAFT WORN UNDERSIZE, HUB WORN OVERSIZE, SPRAG WINDOWS WORN EXCESSIVE AND THE OIL WAS BLACK CONTAINING METAL PARTICLES.SDR CA090901011Shaft · wornSHAFT WORN UNDERSIZE, HUB WORN OVERSIZE, DISCOLORED BLUE, OIL VERY BLACK AND FINE PARTICULES FOUND IN OIL.SDR CA090826012Bearing · unserviceableON GROUND RUN DURING CHECK FOR NEEDLE SPLIT THERE WAS NO SPLIT. SPRAG CLUTCH OR UPPER BEARING U/S, CLUTCH REPLACED.SDR CA090717008Actuator · intermittent(CAN) CLUTCH LIGHT FLICKERING, REPLACED ACTUATOR.SDR 2009FA0001035Quill Assy · corrodedCOMPLETED INSPECTION OF INPUT QUILL PINION, FOUND PITTING BEYOND LIMITS. REMOVD MAIN TRANSMISSION FROM SERVICE.SDR CA090605007Switch · unserviceableTHE CLUTCH WOULD NOT ENGAGE, DISASSEMBLED THE CLUTCH AND FOUND THE SWITCH UNSERVICEABLE WITH A FAULTY WIRE.SDR CA090605003Actuator · failed(CAN) CLUTCH ACUTATOR FAILED. TROUBLESHOOTING FOUND FAULTY SWITCH IN ACTUATOR ASSY. SERVICABLE ACTUATOR INSTALLED.SDR CA090603006Drive Shaft · damaged(CAN) COUPLING YELLOW TEMP PLATES FOUND TURNED BLACK, AIRFRAME AND DRIVESHAFT INSPECTED FOR CAUSE, NONE FOUND, DRIVESHAFT REMOVED AND INSPECTED, GREASE FOUND BURNED, DRIVESHAFT REPLACED, DRIVESHAFT SENT TO OVERHAUL FACILITY.SDR CA090506003Actuator · failed(CAN) CLUTCH ACTUATOR FAILED. TROUBLESHOOTING REVEALED A FAULTY MICROSWITCH. SERVICABLE ACTUATOR INSTALLED.SDR CA090324010Freewheel Unit · mismanufactured(CAN) A RT FREEWHEEL UNIT WAS EVALUATION OF MISMANUFACTURED FREEWHEEL CAM. DURING FREEWHEEL CHANGE IT WAS FOUND THAT SB2158-102 BRG WOULD NOT FIT PAST THE 61350-20878-103 NUT. THREADS ON CAM APPEAR TO BE CUT DEEP ON ONE SIDE AND SHALLOW ON THE OTHER. A VISUASDR CA090223006Sprag Assy · worn(CAN) SPRAG CAGE CRACKED AT 4 CROSSBARS, SPRAG INNER EAR BROKEN, WINDOW WEAR 0.050 SHAFT PN C166-4 REV N WORN UNDERSIZE HUB PN C167-3 WORN OVERSIZE.SDR CA090223005Sprag Assy · worn(CAN) CLUTCH REMOVED FROM SERVICE DUE TO INFLIGHT SLIPPAGE. SHAFT P/N C166-3 WORN OVERSIZE. HUB P/N C167-3 WORN OVERSIZE. SPRAG P/N C188-3 S/N 3961 REV G CAGE BROKEN AT CROSSBAR.
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