JASC 6322

Service difficulty reports · 213

Reports filed under 6322 · Rotorcraft Cooling Fan System, 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 = '6322'
  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 AC2A2025122013901Cooling Fan · shearedDURING TAXI IN FROM RUNWAY, MGB TEMP WARNING ILLUMINATED.Dec 19, 2025 · N639CF · Agusta AW139SDR YV3R2023112200587Fanwheel · defectiveCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 BOLTS WERE LOOSE WITHIN 5.0 HOURS.Nov 11, 2023 · Robsin R22BETAIISDR 8HBR20220228041None · crackedTHE ENGINE COOLING FAN WHEEL WAS REMOVED TO FACILITATE OTHER MAINTENANCE AND A CRACK WAS FOUND ON THE FAN AT A BALANCE BOLT HOLE.Jan 19, 2022 · N924SH · Robsin R22BETASDR AC2A2021101513902Cooling Fan · contaminatedMAIN GEARBOX OIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. SEE SDR AC2A2021101513901 FOR SDR ON SEAL.Oct 15, 2021 · N139FW · Agusta AB139SDR AC2A2021101513901Seal · leakingMAIN GEARBOX OIL COOLER FAN DRIVE SEAL LEAKINGOct 15, 2021 · N139FW · Agusta AB139SDR AC2A2021061013901Cooling Fan · leakingOIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 284.4 HOURS SINCE OVERHAUL.Apr 24, 2021 · N139FW · Agusta AB139SDR YV3R2020111400386Fanwheel · crackedCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 WAS CRACKED.Nov 11, 2020 · Robsin R22BETAIISDR AC2A2021061013903Cooling Fan · leakingOIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 13.7HOURS SINCE LAST OVERHAULOct 11, 2020 · N139FW · Agusta AB139SDR YV3R2020101400366Fanwheel · crackedCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 WAS FOUND CRACKED.Oct 8, 2020 · Robsin R22BETAIISDR YV3R2020101400365Fanwheel · crackedCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 WAS FOUND CRACKED.Oct 8, 2020 · Robsin R22BETAIISDR YV3R2020072400307Fanwheel · crackedCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 CONE P/N: A187-4 WAS FOUND CRACKED.Jul 21, 2020 · Robsin R22BETAIISDR AC2A2021061013902Cooling Fan · leakingOIL COOLER FAN WAS REMOVED AND REPLACED DUE TO MGB FAN QUILL SEAL LEAKING ALLOWING OIL TO MIGRATE TO FAN BEARINGS. TEARDOWN REPORT INDICATES BEARINGS WORN AND REPLACED WITH ONLY 464.1 HOURS SINCE OVERHAUL.Jul 3, 2020 · N139FW · Agusta AB139SDR YV3R2019012200080Fanwheel · crackedCUSTOMER REPORTED FANWHEEL ASSEMBLY P/N: B174-1 WAS CRACKED.May 7, 2019 · Robsin R22BETAIISDR YV3R2019031600047Bolt · looseCUSTOMER REPORTED HUB BOLTS WERE FOUND LOOSE.Mar 12, 2019 · Robsin R22BETAIISDR 2019FA0000010Hub · unserviceableA POST FLIGHT INSPECTION OF THE DRIVE SYSTEM WAS PERFORMED AFTER ENCOUNTERING A FLICKERING CLUTCH LIGHT. DURING THE INSPECTION, THE FANWHEEL HUB ATTACHING HARDWARE WAS FOUND FRETTING AND LOOSE.Jan 11, 2019 · N252CS · Robsin R22BETAIISDR 8HBR20170406002Hub · crackedDURING THE REPLACEMENT OF THE CRANKSHAFT SEAL THE AIRCRAFT FANWHEEL WAS REMOVED AND THE MOUNTING HUB WAS FOUND CRACKED. IN ADDITION, THE FANSHAFT WAS GOUGED FROM THE CRACK IN THE FANWHEEL MATING SURFACE. BOTH COMPONENTS WERE REPLACED. THE CAUSE OF THE CRACK IMar 31, 2017 · N779SH · Robsin R22BETAIISDR AC2R2016120501Bearing · roughREMOVED OIL COOLER FAN FOR OVERHAUL. ROTATED FAN BY HAND. FOUND BEARING TO BE ROUGH.Dec 5, 2016 · N639GG · Agusta AW139SDR AC2R2016112901Fan · failedMGB OIL TEMP WARNING CAS MESSAGE CAME ON IN FLIGHT APPROX. 10 MINUTES AFTER TAKE OFF FROM OFFSHORE LOCATION. FOUND MGB OIL COOLER NOT ENGAGED TO MGB. FOUND MGB OIL COOLER FAN SHAFT BEARING FAILED. REPLACED OIL COOLER FAN AND OIL COOLER.Nov 21, 2016 · N639WW · Agusta AW139SDR CHIR201606152436Seal · failedTHE AFT TRANSMISSION, PN 107D2010-34, SN TA-9-22 WAS REMOVED FROM ACFT FOR A SCHEDULED INSPECTION. WHILE IN THE SHOP, THE BLOWER DRIVEN SEAL RETAINER WAS REMOVED FROM THE MIX BOX TRANSMISSION, PN: 107D2004-19, SN: A-11-111 IN ORDER TO SEE IF THE BLOWER DRIVENJun 14, 2016 · N6674D · Boeing 1072SDR CHIR020166062396Garlock Seal · failedDURING AN INSPECTION, MECHANIC REMOVED AFT TRANSMISSION LUBE FILTER AND NOTICED LARGE METALLIC CHIPS IN THE FILTER HOUSING AND ON THE FILTER PACKS. DISASSEMBLED FILTER AND FOUND MORE CHIPS. REMOVED BLOWER DRIVE SHAFT AND INPUT COVER ON THE TRANSMISSION TO DEJun 6, 2016 · N6682D · Dhav DHC2MK3SDR CA151127011Bearing · failed(CAN) PILOT NOTICED SMOKE IN THE COCKPIT WHILE IN FLIGHT. HELICOPTER WAS LANDED SAFELY. LOWER ACTUATOR BEARING ASSY WAS FOUND TO HAVE SHIFTED REARWARD ON FANSHAFT CAUSING BEARING HOUSING TO COME INTO CONTACT WITH FANWHEEL. ROTATING FANWHEEL ASSEMBLY BOLTS GRNov 11, 2015 · Robsin R22BETASDR 2015FA0000292Bearing · damagedDURING FLIGHT THERE WAS REPORT OF AN ABNORMAL VIBRATION AS WELL AS AN INTERMITTENT CLUTCH LIGHT INDICATION. MAINTENANCE PERFORMED A FAN BALANCE, DURING THE MAINTENANCE RUN-UP THERE WAS A NOTICEABLE NOISE COMMON TO BEARING FAILURE AND AN INCREASING VIBRATION. Jun 29, 2015 · N7087J · Robsin R22BETASDR CHIR201410151754Case · crackedCASE ASSEMBLY AT WEB OR LINER 247 HAS INDICATION OF A CRACK APPROXIMATELY 1.5" LONG. CRACK AT HOUSING IN PREVIOUS WELD REPAIR LOCATED NEAR ROTOR BRAKE HOUSING SUPPORT BORE. CRACK IS LOCATED ON OUTSIDE OF HOUSING.Oct 14, 2014 · N242CH · Boeing 234SDR CA140414011Bearing · lack of lube(CAN) DURING THE 50 HOUR INSPECTION OF THE HELICOPTER, THE LOWER FAN SHAFT BEARING WAS FOUND TO BE EXTRUDING A BLACK RESIDUE. THE LOWER BEARING WOULD NORMALLY SHOW SOME LEAKAGE OF GREASE DURING THE FIRST FEW HUNDRED HOURS OF BREAK-IN. SUSPECT THE BEARING ASSApr 14, 2014 · Robsin R44RAVENIISDR CA110718013Fan · failedDURING A FLIGHT THE PILOT REPORT SHUTDOWN NR 2 ENGINE BECAUSE OF OIL OVERTEMP UP TO 150 DEGREES AND ABOVE 120 DEGREES FOR 2 MIN. LANDED SAFELY. CAUSE WAS COOLER FAN FAILED. TJun 30, 2011 · Bell 206L4SDR 2009FA0000947Blower · failedON A RETURN FLT BACK TO HOME BASE, AT APPROXIMATELY 2130-2200 HRS, CREW DETECTED AN ELECTRICAL BURNING ODOR. IT WAS IMMEDIATELY FOLLOWED BY A MASTER CAUTION LIGHT WITH A NR 1 HYD SERVO LIGHT ASSOCIATED WITH LOUD THUMPS FROM NOSE GEAR. IMMEDIATLEY FOLLWED BY A Oct 30, 2009 · N761MH · Skrsky S76ASDR CA081107001Mount · cracked(CAN) AT REINSTALLATION OF FANWHEEL ASSEMBLY, FOUND TAPERED MOUNTING FLANGE COMPLETELY CRACKED LONGITUDINALLY. UNIT SENT TO MANUFACTURER FOR WARRANTY EXCHANGE.Nov 4, 2008 · Robsin R22BETAIISDR 2008FA0000741Nut · backed outOIL COOLER BLOWER DRIVEN PULLEY RETAINING NUT IS BACKING OFF OF SHAFT DURING NORMAL US. NUT IS A STAINLESS STEEL, SILVER PLATED, ALL METAL SELF LOCKING TYPE NUT. THIS WAS THE THIRD OCCURRENCE OF THIS TYPE FOR OUR UNIT AND WE ARE ALSO CAUSES THE SHAFT BEARING Oct 26, 2008 · N5185G · Hughes 369FFSDR CA080407007Gear Set · shearedAPPROX 100 HRS AGO TRANSMISSION WAS O/H AND NEW PMA GEAR SET WAS INSTALLED S/N GR586A FROM HELICOPTER TECH DURING FLIGHT PILOT HEARD AND FELT NOISE AND MADE A PRECAUTIONARY LANDING AND FOUND COOLING FAN DRIVE PULLEY AND APPROX 1.25 INCHES OF THE DRIVE SHAFT WAApr 5, 2008 · Bell 47G4SDR M7K2008F00080Blower Motor · seizedPILOT REPORTED BLOWER VERY NOISY/GROWLS IN OPERATION. CLOSER EXAMINATION REVEALED VERY ROUGH SHAFT BEARING. A NEW REPLACEMENT MOTOR WAS INSTALLED. THIS BLOWER MOTOR IS USUALLY VERY RELIABLE IF A BIT NOISY IN NORMAL OPERATION. LIKELY CAUSE IS POOR QUALITY OSep 19, 2007 · N817MH · Urocop EC130B4SDR CA060322009Belt · failed(CAN) DURING A 100 HOUR INSPECTION THE BLOWER BELT WAS NOTED AS HAVING SEVERAL TEETH MISSING. BELT IS IDENTIFED WITH THE PN IN WHITE MARKER. BELT TENSION WAS VERIFIED AFTER INSTALLATION AND NO DEFECTS WERE NOTED DURING THE NEXT 3-100 HOUR INSPECTIONS. NO VIBRAMar 8, 2006 · Hughes 369DSDR KBM2005F00221Motor · ratchetingMOTOR, MAKING RATCHETING NOISE. REMOVED AND REPLACE. (K)Jun 23, 2005 · N350SH · Snias AS350B2SDR KBM2005F00136Motor · ratchetingMOTOR, MAKING RACHETING NOISE. REMOVED AND REPLACED. (K)Jun 23, 2005 · N350SH · Snias AS350B2SDR CA050216010Hanger Assy · rotated(CAN) PILOT REPORTED A HIGH FREQUENCY VIBRATION. UPON INVESTIGATION, THE BEARING IN THE FORWARD HANGER ASSEMBLY OF THE OIL COOLER BLOWER WAS FOUND TO BE ROTATING. BLOWER ASSEMBLY REPLACED.Sep 11, 2004 · Bell 206BSDR CA040811008Blower · damaged(CAN) DURING OPERATION A NOISE WAS HEARD FROM THE BACK OF THE AIRCRAFT, AIRCRAFT WAS LANDED AND DURING INSPECTION TO DETERMINE THE ORIGIN OF THE SOUND IT WAS NOTED THAT THE OIL COOLER BLOWER ASSY WAS DAMAGED AND HAD SEVERAL PIECES MISSING. THE AIRCRAFT WAS RETAug 5, 2004 · Aerosp AS355F1SDR CA040120002Hub · galled(CAN) OTHER PART AFFECTED LOWER BEARING C181-3 S/N 1328 UPON REMOVING FAN ASSY FOR ACCESS TO A DEFECTIVE ACTUATOR C051-1, DAMAGE (FRETTING AND GALLING) WAS DISCOVERED ON BOTH MATING FLANGE OF FAN HUB C186-1 (PART OF D174-2 ASSY) AND LOWER BEARING C181-3. NO PRJan 19, 2004 · Robsin R44SDR HEEA086701Blower · inoperativeNR 2 ENGINE BLOWER OFF CAUTION LIGHT ILLUMINATED IN FLIGHT. TO BE SENT TO VENDOR FOR REPAIR.May 22, 2003 · N8045T · Bell 214STSDR HEEA083538Blower · damagedRIVETS LOOSE ON HOUSING. REPLACED WITH SERVICEABLE PART.Jan 13, 2003 · N1546G · Skrsky S76ASDR HEEA082566Shaft · brokenNR 2 ENGINE PARTICLE SEPERATOR BLOWER SHAFT BROKEN. RETURNED TO VENDOR.Dec 6, 2002 · N59806 · Bell 214STSDR AUS20020628Stud · failed(AUS) COOLING FAN MOUNT STUD LOCATED ON CRANKCASE FAILED. LOSS OF TENSION ALLOWED BELT TO FALL OFF AND DESTROY THE COOLING FAN.Apr 21, 2002 · Bell 47G3BSDR HEEA078225Motor · seizedCOOLER BLOWER MOTOR HAS IT`S BEARINGS FROZEN.Feb 28, 2002 · N855PH · Snias AS350BSDR HEEA077870Bearing · roughFWD BEARING ROUGH AND MAKING NOISE.Feb 19, 2002 · N493PH · Bell 407SDR HEEA077620Housing · damagedCOOLER BLOWER HOUSING HAS WORKING RIVETS.Dec 19, 2001 · N493PH · Bell 407SDR HEEA077584Duct · crackedOIL COOLER DUCT CRACKED.Dec 18, 2001 · N496PH · Bell 407SDR HEEA077204Blower · failedFORWARD BEARING LOUD AND ROUGH.Nov 6, 2001 · N496PH · Bell 407SDR HEEA076051Blower · failedTHE #1 PARTICLE SEPARATOR CAUTION LIGHT CAME ON. MAINTENANCE FOUND PARTICLE SEPARATOR BLOWER SHAFT SHEARED.Sep 24, 2001 · N8045T · Bell 214STSDR AUS20010764Fan Blade · failed(AUS) NO1 ENGINE OIL COOLER BLOWER FAN BLADES SEPARATED FROM HUB.Jul 18, 2001 · Bell 412SDR HEEA073787Oil Cooler · corrodedOIL COOLER CORRODED. REPLACED WITH SERVICEABLE TRANS OIL COOLER.Jun 19, 2001 · N40466 · Snias AS350B2SDR HEEA073643Blower · failedSHAFT SHEARED. SENDING TO VENDOR FOR REPAIR.Jun 19, 2001 · N3897N · Bell 214STSDR HEED073552Shaft · vibrationHIGH RDA VIBRATION LEVEL. REPLACED UNIT.Jun 14, 2001 · N3193E · Bell 407
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