JASC 6420

Service difficulty reports · 907

Reports filed under 6420 · Tail Rotor Head, 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 = '6420'
  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 99ZZZX853Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Oct 22, 1998 · N911BY · Bolkms BK117A4SDR HEEA0016201Bearing · roughTAIL ROTOR BEARINGS ROUGH AND SEALS HARD.Oct 21, 1998 · N6100R · Snias AS350B2SDR HEEA0016166Bearing · roughTAIL ROTOR SPIDER'S BEARINGS ROUGH.Oct 14, 1998 · N40466 · Snias AS350B2SDR 98ZZZX4430Spider · stiffTHE TAIL ROTOR SPIDER BECAME STIFF AFTER BEING INSTALLED AT OVERHAUL. THIS WAS 19 HOURS AFTER OVERHAUL, OVER 80 POUNDS IN FORCE WERE REQUIRED TO SLIDE SPIDER MAXIMUM OF 30 PER MM. THE SPIDER WAS REPLACED WITH ANOTHER OVERHAULED SPIDER. IT IS NOW STIFF AND ROct 7, 1998 · N821SP · Snias AS350BASDR HEEA0016095Spider · ratchetingTAIL ROTOR HAS RATCHETING BEARINGS.Oct 5, 1998 · N350BZ · Snias AS350B2SDR HEEA0016093Body · corrodedEXCESSIVE CORROSION AROUND BEARING BORE HOLE AND HINGE BEARING. RUBBER SEPARATION BEARING P/N 350A33-2153-00, TT 650:35 HOURS.Oct 5, 1998 · N60951 · Snias AS350B2SDR HCMA000219Bearing · crackedBEARING IS CRACKED AND WORN BEYOND LIMITS. (X)Oct 1, 1998 · N642BH · Snias AS350BSDR 98ZZZX3863Bearing · wornTAIL ROTOR BEARING WORN.Sep 23, 1998 · N8330P · Hughes 369ESDR 98ZZZX3853Bearing · roughS/N'S A33752, A33751, A33383 - ALL BEARINGS (3 EACH) ARE ROUGH AND STICKING UNDER LOAD.Sep 23, 1998SDR CA980930002Spider · loose(CAN) ON PRE-FLIGHT, EXCESSIVE AXIAL PLAY BETWEEN STATIONARY AND ROTATING PARTS OF THE TAIL ROTOR SPIDER ASSY. ON DISASSEMBLY OF THE SPIDER, 'GRAPHOIL' COATING THAT GOES BETWEEN THE INNER RACE OF THE BEARING AND THE ROTATING SPIDER WAS SOFT AND DEGRADED WHICHSep 22, 1998 · Snias AS350BSDR HEEA0016064Bearing · crackedHUB REMOVED FOR 2500 HOUR OVERHAUL. FOUR EACH BLADE BEARINGS CRACKED.Sep 21, 1998 · N230UN · Bell 230SDR HEEA0016063Hub · damagedHUB REMOVED FOR 2500 HOUR OVERHAUL. FOUR EACH BLADE BEARINGS CRACKED.Sep 21, 1998 · N230UN · Bell 230SDR HCMA0000221Bearing · wornTAIL ROTOR BEARING WORN BEYOND LIMITS. (X)Sep 18, 1998 · N194BH · Snias AS350B2SDR 99ZZZX890Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Sep 18, 1998 · N158BK · Bolkms BK117A3SDR CA980928017Bearing · failed(CAN) IN CRUISE, VIBRATION AND A GROWLING NOISE FELT IN THE HELO. ABNORMAL AXIAL PLAY IN THE TAIL ROTOR PITCH CHANGE BEARING ASSY. BEARING ROUGH. AS350 IPC 65.20.30 FIG 1B ITEM 70 AND 65.20.10 FIG. 1 ITEM 30C.Sep 16, 1998 · Snias AS350B2SDR 99ZZZX843Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Sep 15, 1998 · N17SJ · Bolkms BK117B1SDR 98ZZZX3642Link · wornBEARING WORN BEYOND LIMITS. REPLACED.Sep 14, 1998 · N1097J · Hughes 369DSDR 98ZZZX3636Fork · wornWORN BEARINGS. REMOVED AND REPLACED.Sep 14, 1998 · N369AW · Hughes 369DSDR 99ZZZX852Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Sep 12, 1998 · N5194C · Bolkms BK117B1SDR HEEA0015988Spider · wornDUPLEX BEARING FEELS ROUGH AND PC STAKED BEARING WORN.Sep 4, 1998 · N6097Z · Snias AS350B2SDR HEEA0015951Bearing · corrodedBEARINGS ON TAIL ROTOR ARE WORN AND CORRODED.Sep 3, 1998 · N407MM · Bell 407SDR CA980916070Trunnion · brinnelled(CAN) DURING BLADE CHANGE, TRUNNION RACE BRINNELLED BEYOND LIMITS.Sep 2, 1998 · Bell 206LSDR CA980916069Trunnion · brinnelled(CAN) DURING TAIL ROTOR BLADE REMOVAL, TRUNNION FELT RATCHETY AND HAD NO PRELOAD. TRUNNION RACE BRINNELLED BEYOND LIMITS.Sep 1, 1998 · Bell 206L4SDR 98ZZZX3641Fork · damagedELASTOMERIC CONNICALS DETERIORATED AND CRACKED. REMOVED AND REPLACED T/R FORK.Aug 31, 1998 · N500DC · Hughes 369DSDR HEEA0015782Bearing · wornFEATHERING BEARINGS WORN ON TAIL ROTOR.Aug 26, 1998 · N402PH · Bell 407SDR 99ZZZX1276Bearing · mismanufacturedDEFECTIVE FROM STOCK. BEARING NOT CENTERED IN HOUSING. RMA NR R016886. REMOVED AND REPLACED.Aug 18, 1998 · N117TX · Bolkms BK117B1SDR 99ZZZX893Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Aug 17, 1998 · N117CW · Bolkms BK117A4SDR HEEA0015615Nut · mismanufactured2 EACH P/N NAS577-4A NUTS AND 2 EACH P/N NAS578-4B RETAINERS MISMANUFACTURED. HUB, P/N 40702101105.Aug 14, 1998 · N417PH · Bell 407SDR HEEA0015611Bearing · deflectedT/R BEARING HAS DEFLECTED INNER RACE.Aug 14, 1998 · Bell 212SDR 99ZZZX894Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 29, 1998 · N586BH · Bolkms BK117A4SDR 98ZZZX3852Bolt · mismanufacturedUPON UNSUCCESSFUL INSTALLATION ATTEMPT OF A NEW BOLT, THE BOLT WAS SUBSEQUENTLY MEASURED AND DETERMINED THAT THE OUTSIDE DIAMETER WAS OVERSIZED BY .001 INCH. THE REMAINING SPARE BOLTS FROM THE SAME BATCH WERE THEN MEASURED, AND ONE ADDITIONAL BOLT WAS FOUND TJul 21, 1998 · Hughes 369DSDR HCMA0000210Bearing · roughBEARING WAS ROUGH, INSPECTED AND FOUND INNER RACE SPINNING. REPLACED. (X)Jul 18, 1998 · N196BH · Snias AS350B2SDR HEEA0015176Mount · damagedRUBBER ON MOUNT COMING LOOSE.Jul 13, 1998 · N447PH · Bell 407SDR HEEA0015170Spider · wornTAIL ROTOR SPIDER WORN.Jul 13, 1998 · N40466 · Snias AS350B2SDR HEEA0015161Bearing · wornROTOR BEARINGS WORN.Jul 13, 1998 · N141MA · Bell 407SDR HEEA0015026Retainer · mismanufacturedTAIL ROTOR RETAINER WOULD NOT FIT ON NUT P/N NAS577B4A.Jun 26, 1998 · N427PH · Bell 407SDR HEEA0015025Bearing · wornTAIL ROTOR BEARING EXCESSIVELY WORN.Jun 26, 1998 · N427PH · Bell 407SDR HEEA0015002Bearing · brokenTAIL ROTOR FEATHERING BEARING INNER LINER COMING OUT.Jun 24, 1998 · N57416 · Bell 407SDR HEEA0014950Bearing · wornFEATHERING BEARING WORN.Jun 23, 1998 · N57416 · Bell 407SDR HEEA0014948Bearing · wornFEATHERING BEARINGS WORN AND MOVING IN BORE OF YOKE ASSY.Jun 23, 1998 · N457PH · Bell 407SDR AU980743Bearing · corroded(AUS) TAIL ROTOR BEARING SEIZED DUE TO RUST. DURING REMOVAL, THE BEARING DISINTEGRATED. EVIDENCE OF BRINELLING ON THE INNER AND OUTER RACES CONSISTENT WITH A MISSING NEEDLE ROLLER. THE AIRCRAFT FLIES THROUGH RAIN ON A REGULAR (DAILY) BASIS.Jun 12, 1998 · Bell 206L3SDR AU980671Bearing · corroded(AUS) TAIL ROTOR HUB BEARING SEIZED AND FULL OF RUST. DURING REMOVAL, THE BEARING DISINTEGRATED. INVESTIGATION FOUND BRINELLING ON THE INNER AND OUTER RACES CONSISTENT WITH ONE NEEDLE ROLLER BEING ABSENT FROM THE BEARING.Jun 12, 1998 · Bell 206L3SDR HEEA0014657Inner Sleeve · corrodedTAIL ROTOR BEARING JOURNAL IS CORRODED AND COATING ID FLAKING OFF.Jun 8, 1998 · N217UC · Bolkms BK117B1SDR CA980616003Rod · broken(CAN) ROD END OUTER RACE FRACTURED LOSING 1/3 OF CIRCUMFERENCE AND RELEASING THE BALL. LOSS OF CONTROL OF ONE BLADE AND TAIL ROTOR AUTHORITY.Jun 8, 1998 · Bell 205A1SDR CA980616015Spider · fretted(CAN) 331 HOURS AFTER INCORPORATION OF SB 65.00.35, BEARING RETAINING NUT 350A33-2149-21 LOST TORQUE ALLOWING BEARING TO SPIN ON ROTATING SPIDER SHAFT. OTHER THAN LOSS OF TORQUE ON THE RETAINING NUT, THE ONLY OTHER INDICATION WAS A SLIGHT AXIAL PLAY IN THE NOMay 27, 1998 · Snias AS350B2SDR HEEA0014295Body · wornTAIL ROTOR BODY HAS WORN BEARINGS.May 22, 1998 · N6100R · Snias AS350B2SDR HEEA0014293Spider · wornT/R SPIDER WORN BEARINGS.May 22, 1998 · N6100R · Snias AS350B2SDR CA980707035O-Ring · missing(CAN) TAIL ROTOR OUTPUT SHAFT CAP PACKING 'O' RING MISSING FOLLOWING OVERHAUL.May 22, 1998 · Snias AS350BSDR HEEA0014064Hub Assy · wornT/R HUB ASSY WORN FEATHERING BEARING. REPLACED BEARINGS AND RETURNED TO SERVICE.Apr 29, 1998 · N1202T · Bell 412SDR 99ZZZX759Bolt · shearedTAIL ROTOR BOLT SHEARED IN-FLIGHT CAUSING SEVERE VIBRATION. LANDING MADE WITHOUT DAMAGE. BELIEVE BOLT FAILED DUE TO CORROSION/RUST SETTING UP STRESS POINTS. SUBMITTER RECOMMENDED INSPECTION EVERY 100 HOURS. BOLT WAS LAST INSPECTED 168.3 HOURS PREVIOUSLY.Apr 29, 1998 · N228W · Robsin R22
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