# Service difficulty reports: JASC 6220 A list on [JASC 6220](https://openairdocs.org/jasc/6220.md). Reports filed under 6220 · Main Rotor Head, newest first. Page 1 of 42 · 2,052 reports - [SDR QR9R2026092400001](https://openairdocs.org/sdr/QR9R2026092400001.md): Control Lever · gouged · Sep 24, 2026 · Bolkms BK117C2 > CONTROL LEVER ASSEMBLY WAS RECEIVED FROM SUPPLY WITH 2 GOUGES IN FLOATIND BUSHING BORE. - [SDR QMLA 202608272006](https://openairdocs.org/sdr/QMLA%20202608272006.md): Main Rotor · fod · Aug 27, 2026 · N213SH · Urocop EC130T2 > JUST PRIOR TO LANDING, A SMALL PLASTIC BAG FLOATED UP AND INTO THE MAIN ROTOR SYSTEM. IT BLEW OUT ALMOST IMMEDIATELY AFTER THE FACT. A NORMAL LANDING AND SHUTDOWN WERE PERFORMED. - [SDR QR9R2026080700002](https://openairdocs.org/sdr/QR9R2026080700002.md): Bolt · cracked · Aug 7, 2026 · Bolkms BK117C2 > NDI REVEALED HEX BOLT WAS CRACKED IN THREAD AREA NEAR COTTER KEY HOLE. - [SDR QR9R2026080700001](https://openairdocs.org/sdr/QR9R2026080700001.md): Bolt · cracked · Aug 7, 2026 · Bolkms BK117C2 > NDI REVEALED HEX BOLT WAS CRACKED IN THREAD AREA NEAR COTTER KEY HOLE. - [SDR QR9R2026072300003](https://openairdocs.org/sdr/QR9R2026072300003.md): Bolt · cracked · Jul 23, 2026 · Bolkms BK117C2 > NDI REVEALED HEX BOLT WAS CRACKED IN THREAD AREA AROUND COTTER KEY HOLE. - [SDR QR9R2026071700001](https://openairdocs.org/sdr/QR9R2026071700001.md): Control Lever · misrepaired · Jul 17, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.031" AROUND SLIP BUSHING; MAX ALLOWABLE IS.019". - [SDR QR9R2026071300002](https://openairdocs.org/sdr/QR9R2026071300002.md): Bolt · cracked · Jul 13, 2026 · Bolkms BK117C2 > HEX BOLT FAILED NDI INSPECTION. CRACKED IN THREAD AREA ABOVE COTTER KEY HOLE. - [SDR QR9R2026071300001](https://openairdocs.org/sdr/QR9R2026071300001.md): Control Lever · mismanufactured · Jul 13, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.030" AROUND SLIP BUSHING; MAX ALLOWABLE IS.019". - [SDR QR9R2026061500001](https://openairdocs.org/sdr/QR9R2026061500001.md): Control Lever · out of limits · Jun 15, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.060 AROUND SLIP BUSHING; MAX ALLOWED IS.019. - [SDR QR9R2026052800001](https://openairdocs.org/sdr/QR9R2026052800001.md): Bolt · cracked · May 28, 2026 · Bolkms BK117C2 > HEX BOLT FAILED NDI INSPECTION. CRACKED IN THREAD AREA AROUND COTTER KEY HOLE. - [SDR QR9R2026052600001](https://openairdocs.org/sdr/QR9R2026052600001.md): Control Lever · out of limits · May 26, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSEMBLY FROM AIRBUS UNSERVICEABLE. MEASURED.030" AROUND SLIP BUSHING, MAX ALLOWED IS.019". - [SDR QR9R2026052000001](https://openairdocs.org/sdr/QR9R2026052000001.md): Control Lever · out of limits · May 20, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.030" AROUND SLIP BUSHING, MAX ALLOWED IS.019". - [SDR QR9R2026051800001](https://openairdocs.org/sdr/QR9R2026051800001.md): Control Lever · out of limits · May 18, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.026" AROUND SLIP BUSHING, MAX ALLOWED IS.019". - [SDR QR9R2026051500001](https://openairdocs.org/sdr/QR9R2026051500001.md): Control Lever · out of limits · May 15, 2026 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSY FROM AIRBUS UNSERVICEABLE. MEASURED.026" AROUND SLIP BUSHING, MAX ALLOWED IS.019". - [SDR QR9R2026051400001](https://openairdocs.org/sdr/QR9R2026051400001.md): Control Lever · out of limits · May 14, 2026 · Bolkms BK117C2 > RECEIVED FROM AIRBUS UNSERVICEABLE. MEASURED.026'' AROUND SLIP BUSHING, MAX ALLOWED IS.019". - [SDR QMLA2026041720027](https://openairdocs.org/sdr/QMLA2026041720027.md): Bearing · worn · Apr 17, 2026 · N712SL · Bell 429 > REQUESTED BY THE RAM TO INSPECT THE MRH SHEAR BEARINGS TO VERIFY TORQUE ON ATTACHING HARDWARE. FOUND THE BLUE BLADE SHEAR BEARING UPPER BOLT TO FAIL TORQUE CHECK, WITH THE BOLT ONLY BEING FINGER TIGHT. AFTER REMOVAL OF THE BOLT FOUND A SLIGHT STEP ON THE BOLT - [SDR 2026FA0000237](https://openairdocs.org/sdr/2026FA0000237.md): Bearing · brinelled · Mar 30, 2026 · N184SH · Robsin R22BETAII > FOUND BOYH SPINDLE BEARING SETS BRINELLED, TSN: 775.4. NO OVER-SPEEDS - [SDR 8HBR20260329079](https://openairdocs.org/sdr/8HBR20260329079.md): Bearing · brinelled · Mar 26, 2026 · N779SH · Robsin R22BETA > PILOTS EXPERIENCED ERRATIC CYCLIC MOVEMENT. UPON INSPECTION IT WAS FOUND THAT THE SPINDLE BEARINGS IN ONE MAIN ROTOR BLADE WERE BRINELLED. - [SDR 2026FA0000216](https://openairdocs.org/sdr/2026FA0000216.md): Bearing · brinelled · Mar 26, 2026 · N183LE · Robsin R22BETAII > FOUND BOTH SPINDLE BEARING SETS BRINELLED, BEARING SETS / SPINDLES TSN: 247.7. NO OVER SPEEDS - [SDR 8HBR20260329078](https://openairdocs.org/sdr/8HBR20260329078.md): Bearing · brinelled · Mar 23, 2026 · N8340S · Robsin R22BETA > PILOTS EXPERIENCED ERRATIC CYCLIC MOVEMENT. UPON INSPECTION IT WAS FOUND THAT THE SPINDLE BEARINGS IN ONE MAIN ROTOR BLADE WERE BRINELLED. - [SDR QR9R2026030900001](https://openairdocs.org/sdr/QR9R2026030900001.md): Bolt · cracked · Mar 9, 2026 · Bolkms BK117C2 > NDI INSPECTION OF THE SECONDARY BOLT REVEALED A CRACK IN BETWEEN 4TH AND 5TH THREAD FROM TOP THREAD OF BOLT. - [SDR QR9R2026021200002](https://openairdocs.org/sdr/QR9R2026021200002.md): Bolt · cracked · Feb 12, 2026 · Bolkms BK117C2 > NDI INSPECTION REVEALED HEX BOLT WAS CRACKED. - [SDR QR9R2026021200001](https://openairdocs.org/sdr/QR9R2026021200001.md): Bolt · cracked · Feb 12, 2026 · Bolkms BK117C2 > NDI INSPECTION REVEALED HEX BOLT WAS CRACKED. - [SDR JYDR20260203027](https://openairdocs.org/sdr/JYDR20260203027.md): Piston Rod · broken · Feb 3, 2026 · N173AC · Skrsky S64E > AIRCRAFT HAD JUST SHUT DOWN FOR A 3HR BIM INSPECTION. (REQUIRED AD) MAINTENANCE PERSONAL NOTICED A DAMPER ASSEMBLY BROKEN AT THE ATTACHMENT TO THE HORIZONTAL HINGE PIN. THIS REPORT IS PRELIMINARY BECAUSE THIS REPAIR STATION HAS NOT YET RECIEVED THE MRH. - [SDR QR9R2025100100008](https://openairdocs.org/sdr/QR9R2025100100008.md): Control Lever · out of limits · Oct 2, 2025 · Bolkms BK117C2 > CONTROL LEVER WAS RECEIVED BAD FROM SUPPLY BEYOND LIMITS (.050") IN WASHER/BUSHING AREA. - [SDR QR9R2025100200007](https://openairdocs.org/sdr/QR9R2025100200007.md): Control Lever · out of limits · Oct 2, 2025 · Bolkms BK117C2 > CONTROL LEVER WAS RECEIVED BAD FROM SUPPLY BEYOND LIMITS (.069") IN WASHER/BUSHING AREA. - [SDR QR9R2025100200006](https://openairdocs.org/sdr/QR9R2025100200006.md): Control Lever · out of limits · Oct 2, 2025 · Bolkms BK117C2 > CONTROL LEVER WAS RECEIVED BAD FROM SUPPLY BEYOND LIMITS (.070") IN WASHER/BUSHING AREA. - [SDR QR9R2025091800004](https://openairdocs.org/sdr/QR9R2025091800004.md): Bearing · worn · Sep 18, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025091800003](https://openairdocs.org/sdr/QR9R2025091800003.md): Bearing · worn · Sep 18, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025091800002](https://openairdocs.org/sdr/QR9R2025091800002.md): Bearing · worn · Sep 18, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025091800001](https://openairdocs.org/sdr/QR9R2025091800001.md): Bearing · worn · Sep 18, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025091500003](https://openairdocs.org/sdr/QR9R2025091500003.md): Control Lever · out of limits · Sep 15, 2025 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSEMBLY FROM AIRBUS UNSERVICEABLE. CONTROL LEVER MEASURED.024" AROUND SLIP BUSHING. MAX ALLOWED IS.019". - [SDR QR9R2025091500002](https://openairdocs.org/sdr/QR9R2025091500002.md): Control Lever · out of limits · Sep 15, 2025 · Bolkms BK117C2 > RECEIVED CONTROL LEVER ASSEMBLY FROM AIRBUS UNSERVICEABLE. CONTROL LEVER MEASURED.045" AROUND SLIP BUSHING. MAX ALLOWED IS.019". - [SDR 2025FA0000638](https://openairdocs.org/sdr/2025FA0000638.md): Bushing · incorrect · Sep 11, 2025 · Agusta AW119MKII > MAIN ROTOR HEAD DAMPER BUSHING P/N 109-0111-32-10X WAS INSTALLED INCORRECTLY DURING AIRCRAFT PRODUCTION. AIRCRAFT VIBRATIONS ARE SUSPECTED AS A RESULT OF THE INCORRECT ASSEMBLY. - [SDR 2A6R2025082774106](https://openairdocs.org/sdr/2A6R2025082774106.md): Cap · cracked · Aug 27, 2025 · N135NK · Urocop EC135P2 > DURING A 1000 HOUR INSPECTION, DAMAGE WAS FOUND IN THE FORM OF A 0.250'”CRACK LOCATED ON THE MAIN ROTOR HUB CAP PN: L662C1024101. A REPAIR PROCEDURE WAS PERFORMED IAW AIR METHODS EA# 23-5300-EA-5277 DATED 19 SEP 2025. REFERENCE MG741 ON FILE AT REPAIR STATIO - [SDR 2025FA0000364](https://openairdocs.org/sdr/2025FA0000364.md): Starflex · excess play · May 20, 2025 · N191NR · Snias AS350B3 > NOTE: MODEL IS AS350B3. DURING INSPECTION, FOUND 3EA M/R STARFLEX BALL JOINT BEARINGS HAD EXCESSIVE PLAY. INSTALLED 3EA NEW P/N 704A33633124 BALL JOINT BEARINGS. - [SDR QMLA2025042920054](https://openairdocs.org/sdr/QMLA2025042920054.md): Bonding Wire · broken · Apr 29, 2025 · N807LF · Snias AS350B3 > BONDING BRAIDS (P/N SA350A31185100) ARE PRONE TO BREAKING PREMATURELY AND ARE NOT LASTING AS EXPECTED. DESPITE PROPER INSTALLATION, THE COMPONENTS SHOW SIGNS OF FAILURE AFTER MINIMAL FLIGHT HOURS, INDICATING A POTENTIAL DURABILITY ISSUE. - [SDR 2NVA2025042401](https://openairdocs.org/sdr/2NVA2025042401.md): Yoke · failed insp · Apr 23, 2025 · N74808 · Robsin R44RAVENII > LOSS OF MR RPM INDICATION DURING RUN UP. SUBSEQUENT VISUAL INSPECTION OF HALL EFFECT SENDERS REVEALED NON CONFORMITY OF C908-1 REV K YOKE. DISASSEMBLY REVEALED FULL TORQUE ON ALL FASTENERS, BUT WEAR ON SPLINES OF YOKE AND PINION. ALL INFO SENT TO ROBINSON HELI - [SDR QR9R2025041600003](https://openairdocs.org/sdr/QR9R2025041600003.md): Control Lever · corroded · Apr 16, 2025 · Bolkms BK117C2 > CONTROL LEVER ASSY WAS RECEIVED FROM SUPPLY WITH PITTING IN MOUNTING HOLES. - [SDR QR9R2025041600002](https://openairdocs.org/sdr/QR9R2025041600002.md): Control Lever · corroded · Apr 16, 2025 · Bolkms BK117C2 > CONTROL LEVER ASSY WAS RECEIVED FROM SUPPLY WITH PITTING IN MOUNTING HOLES. - [SDR QR9R2025041600001](https://openairdocs.org/sdr/QR9R2025041600001.md): Control Lever · corroded · Apr 16, 2025 · Bolkms BK117C2 > CONTROL LEVER ASSY WAS RECEIVED FROM SUPPLY WITH PITTING IN MOUNTING HOLES. - [SDR QR9R2025041500004](https://openairdocs.org/sdr/QR9R2025041500004.md): Bearing · worn · Apr 15, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025041500003](https://openairdocs.org/sdr/QR9R2025041500003.md): Bearing · worn · Apr 15, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025041500002](https://openairdocs.org/sdr/QR9R2025041500002.md): Bearing · worn · Apr 15, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025041500001](https://openairdocs.org/sdr/QR9R2025041500001.md): Bearing · worn · Apr 15, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QMLA2025032720041](https://openairdocs.org/sdr/QMLA2025032720041.md): Rotor Head · cracked · Mar 27, 2025 · N184AM · Bell 407 > CRACK FOUND ON MAIN ROTOR HUB BEARING ADAPTER ASSY ON DIAMOND BLADE. REPLACED MRH ASSY. - [SDR QR9R2025032000004](https://openairdocs.org/sdr/QR9R2025032000004.md): Bearing · worn · Mar 20, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025032000003](https://openairdocs.org/sdr/QR9R2025032000003.md): Bearing · worn · Mar 20, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025032000002](https://openairdocs.org/sdr/QR9R2025032000002.md): Bearing · worn · Mar 20, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. - [SDR QR9R2025032000001](https://openairdocs.org/sdr/QR9R2025032000001.md): Bearing · worn · Mar 20, 2025 · Bolkms BK117C2 > DURING INSPECTION OF NEEDLE BEARING, MAINTENANCE FOUND THE PROTECTIVE COATING WORN OFF OF BEARING (ROTOR STAR CONTACT POINT) CAUSING DAMAGE TO ROTOR STAR. Next page: https://openairdocs.org/jasc/6220/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 jasc_code = '6220' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/jasc/6220/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.