# Service difficulty reports: JASC 6321

A list on [JASC 6321](https://openairdocs.org/jasc/6321.md).

Reports filed under 6321 · Main Rotor Brake, newest first.

Page 1 of 6 · 275 reports

- [SDR 4DSR20251023002](https://openairdocs.org/sdr/4DSR20251023002.md): Brake · out of tolerance · Oct 23, 2025 · N613TC · Snias AS350B3
  > DURING A SCHEDULED 12YR INSPECTION, THE MGB ROTOR BRAKE WAS FOUND TO BE OUT OF TOLERANCE/LOOSE AND REQUIRED REPLACEMENT. RECEIVED ROTOR BRAKE P/N: 350A32-0500-02 FROM NAMPA VALLEY HELICOPTERS IN "REPAIRED" STATUS/WORK. AFTER VISUAL RECEIVING INSPECTION, THE AT
- [SDR 454A0110100922](https://openairdocs.org/sdr/454A0110100922.md): Brake Caliper · cracked · Feb 11, 2025 · N529MD · Bolkms BK117C2
  > FOUND CRACKING ON EACH BRAKE CALIPER PISTON. WEAR PLATES DO NO COMPLETELY SPAN PISTON. FOUND ABNORMAL WEAR ON HOUSING FROM CONTACT WITH PADS AND ROTOR DISK. THIS IS THE SECOND INSTANCE.
- [SDR 2023FA0000029](https://openairdocs.org/sdr/2023FA0000029.md): Mount Bracket · cracked · Jan 16, 2023 · N412UH · Bell 407
  > THE RIGHT AFT MAIN ROTOR BRAKE TURN BUCKLE MOUNT WAS FOUND CRACKED AT THE AFT SIDE OF THE BOLT HOLE BORE.
- [SDR 2022FA0000646](https://openairdocs.org/sdr/2022FA0000646.md): Axle · corroded · Oct 26, 2022 · N9NJ · Agusta AW139
  > CUSTOMER REPORTED ROTOR BRAKE INOPERATIVE ON ARRIVAL AT REPAIR STATION FOR SCHEDULED INSPECTION. TROUBLESHOOTING REVEALED THE ROTOR BRAKE CALIPER WOULD NOT LOWER WHEN THE ROTOR BRAKE WAS RELEASED. FURTHER EVALUATION REVEALED THE ROTOR BRAKE ACTUATOR WAS INOP
- [SDR QR9R20211029004](https://openairdocs.org/sdr/QR9R20211029004.md): Switch · faulty · Oct 29, 2021 · Bolkms BK117C2
  > ACFT RESTRICTED FROM ROTOR BRAKE USE DUE TO ROTOR BRAKE CAUTION DOES NOT ILLUMINATE ON CAD WHEN BRAKE IS ENGAGED. REPLACED MICRO-SWITCH (IPC: 63-51-10-01-420); MOC OK.
- [SDR AC2A2021102913901](https://openairdocs.org/sdr/AC2A2021102913901.md): Actuator · stuck · Oct 28, 2021 · N639MC · Agusta AW139
  > ROTOR BRAKE INOP, FOUND ROTOR BRAKE ACTUATOR WILL NOT ACTUATE (STUCK)
- [SDR QR9R20210902003](https://openairdocs.org/sdr/QR9R20210902003.md): Pad · failed · Sep 2, 2021 · Bolkms BK117C2
  > ROTOR BRAKE FAILED TO STOP ROTOR SYSTEM IN ALLOWED TIME. AIRCRAFT RESTRICTED FROM ROTOR BRAKE USE.
- [SDR QR9R20210901004](https://openairdocs.org/sdr/QR9R20210901004.md): Pad · unreliable · Sep 1, 2021 · Bolkms BK117C2
  > ROTOR BRAKE FOUND TO BE INEFFECTIVE (CAUTION ADVISORY ON CAD INDICATED THAT IT WAS ENGAGING). ROTOR BRAKE CHECK PERFORMED IAW 05-60-00, 6-1. ROTOR BRAKE CONFIRMED AS INEFFECTIVE (TOOK 2 MINUTES AND 25 SECONDS FOR ROTOR TO STOP).
- [SDR HDNA20210822005](https://openairdocs.org/sdr/HDNA20210822005.md): Caliper · broken · Aug 22, 2021 · N414UH · Bell 407
  > THE LEFT ROTOR BRAKE CALIPER LOWER MOUNTING EAR BROKE IN ADDITION TO THE TURN BUCKLE ATTACHMENT AT THE CALIPER WAS COMPROMISED. THIS RESULTED IN CONTACT BETWEEN THE CALIPER, ROTOR BRAKE ROTOR DISC AND ENGINE DRIVE SHAFT. MINOR DAMAGE WAS SUSTAINED TO THE ROT
- [SDR AC2A2021072213901](https://openairdocs.org/sdr/AC2A2021072213901.md): Actuator · stuck · Jul 21, 2021 · N639DS · Agusta AW139
  > ROTOR BRAKE CAS FAIL MESSAGE ILLUMINATED ON SHUTDOWN, ACTUATOR STUCK IN UP POSITION.
- [SDR AC2A2020111413901](https://openairdocs.org/sdr/AC2A2020111413901.md): Control Module · defective · Nov 13, 2020 · N639DS · Agusta AW139
  > ROTOR BRAKE WILL NOT BUILD PRESSURE. ROTOR BRAKE CONTROL MODULE WAS FOUND TO BE DEFECTIVE. MODULE WAS PREVIOUSLY REPAIRED BY MANUFACTURE AND BECAME DEFECTIVE IN 379.9 HOURS OF OPERATION.
- [SDR QMLA2018101218111](https://openairdocs.org/sdr/QMLA2018101218111.md): Brake Assy · damaged · Oct 9, 2018 · N397LG · Snias AS350B3
  > UPON DISASSEMBLY OF ROTOR BRAKE. BRAKE ASSEMBLY DRIVE FLANGE AND HYDRAULIC DRIVE COUPLING HAD EXTREME HEAT DAMAGE AND METAL TRANSFER. THE DAMAGE CONTAINED TO THESE ITEMS PARTS WERE ORDERED AND REPLACED GROUND RUN MOC CHECKS COMPLETED AND AIRCRAFT RETURNED TO S
- [SDR KBTR201901280002](https://openairdocs.org/sdr/KBTR201901280002.md): Bracket · cracked · Jul 26, 2018 · N407LF · Bell 407
  > DURING 3600 HOUR OVERHAUL FOUND BRAKE CALIPER MOUNTING BRACKET CRACKED, STARING AT LOWER CENTER CORNER EXTENDING AROUND BOLT HOLE ON BOTH SIDES. NO OBVIOUS SIGNS OF WHAT STRESSES CAUSED THE CRACK, NOR ANY INDICATION OF AN INDECENT.
- [SDR KBTR201901280001](https://openairdocs.org/sdr/KBTR201901280001.md): Bracket · cracked · Jul 26, 2018 · N407LF · Bell 407
  > DURING 3600 HOUR OVERHAUL FOUND BRAKE CALIPER MOUNTING BRACKET CRACKED, STARING AT LOWER CENTER CORNER EXTENDING AROUND BOLT HOLE ON BOTH SIDES. NO OBVIOUS SIGNS OF WHAT STRESSES CAUSED THE CRACK, NOR ANY INDICATION OF AN INDECENT.
- [SDR KBTR201901280003](https://openairdocs.org/sdr/KBTR201901280003.md): Bracket · cracked · Jun 5, 2018 · N808MT · Bell 407
  > DURING 3600 HOUR OVERHAUL FOUND BRAKE CALIPER MOUNTING BRACKET CRACKED, STARING AT LOWER CENTER CORNER EXTENDING AROUND BOLT HOLE ON BOTH SIDES. NO OBVIOUS SIGNS OF WHAT STRESSES CAUSED THE CRACK, NOR ANY INDICATION OF AN INDECENT.
- [SDR QMLA2018040418040](https://openairdocs.org/sdr/QMLA2018040418040.md): Pad · worn · Apr 4, 2018 · N530LN · Urocop EC135P2
  > ABOUT 18 MINUTES INTO FLIGHT, ROTOR BRAKE CAUTION LIGHT ILLUMINATED WITH AN ACCOMPANYING ODOR. LANDED AIRCRAFT AND SHUTDOWN AND VERIFIED THERE WAS NO SMOKE OR FIRE. CALLED MAINTENANCE. MAINTENANCE INSPECTED ROTOR BRAKE, FOUND TO BE FREE AND OPERATING NORMAL, H
- [SDR KBTR2018102355371](https://openairdocs.org/sdr/KBTR2018102355371.md): Bracket · broken · Mar 29, 2018 · N766MT · Bell 407
  > AFTER PERFORMING A 3600 HOUR ROTOR BRAKE CALIPER OVERHAUL ON CALIPER P/N:427-340-352-113, S/N: 656 THE CALIPER WAS SENT BACK TO THE CUSTOMER AND AFTER SOME TIME WE WERE NOTIFIED, AT A TSO OF 106.5 HOURS, THAT THE SUPPORT BRACKET P/N:D0296-2 HAD BROKEN IN TO TW
- [SDR KBTR201810235537](https://openairdocs.org/sdr/KBTR201810235537.md): Bracket · broken · Mar 29, 2018 · N766MT · Bell 407
  > AFTER PERFORMING A 3600 HOUR ROTOR BRAKE CALIPER OVERHAUL ON CALIPER P/N:427-340-352-113, S/N: 644 THE CALIPER WAS SENT BACK TO THE CUSTOMER AND AFTER SOME TIME WE WERE NOTIFIED, AT A TSO OF 106.5 HOURS, THAT THE SUPPORT BRACKET P/N:D0296-2 HAD BROKEN IN TO TW
- [SDR 7AJA2015031500001](https://openairdocs.org/sdr/7AJA2015031500001.md): Brake · broken · Mar 15, 2015 · N587PB · Beech C90A
  > AIRCRAFT TOOK OFF FROM AIRPORT WITH NO INDICATION OF ANY DIFFICULTIES IN FLIGHT AND UNEVENTFUL LANDING. UPON PARKING ACFT, PILOT PERFORMED POST FLIGHT INSPECTION AND FOUND RT MLG BRAKE CALIPER BROKEN, ALSO DAMAGES TO RT MLG WHEEL WELL, FUEL LINES IN WHEEL WELL
- [SDR QMLA2014041614038](https://openairdocs.org/sdr/QMLA2014041614038.md): Planetary Gear · unserviceable · Apr 16, 2014 · N546AM · Urocop AS365N3
  > DURING A6031RT, MAST INSPECTION, UPON SEPARATION OF THE MAST & MGB, SEVERAL METALLIC FERROUS FLAKES WAS LOCATED ON & AROUND THE EPICYCLICAL REDUCTION GEAR. AFTER FURTHER INVESTIGATION, 1 OF 5 SATELLITE PLANETARY GEARS PN 350A32-1082-03, SN L31442 OF THE EPIC
- [SDR CA140127011](https://openairdocs.org/sdr/CA140127011.md): Flange · damaged · Jan 10, 2014 · Agusta AW119MKII
  > (CAN) AFTER SHUTDOWN, DURING ROTOR BRAKE APPLICATION, CREW REPORTED GRINDING NOISE COMING FROM TRANSMISSION AREA, AND EXCESSIVE VIBRATIONS WERE FELT THROUGH THE AIRFRAME. ACFT WAS INSPECTED BY MAINTENANCE, THE ROTOR BRAKE FLANGE AND OUTPUT SPLINE WERE FOUND T
- [SDR CA130812008](https://openairdocs.org/sdr/CA130812008.md): Bolt · sheared · Aug 12, 2013 · Bell 407
  > (CAN) WHILE PERFORMING INSPECTION, ACCORDING WITH BHT-407-MM1, CH 5-00-00, PARA 5-20 & DOC B0223-OM4, PARA 1.2. ROTOR BRAKE GUIDE BOLTS FOUND SHEARED, ROTOR BRAKE PADS WORN EXCESSIVELY AND CAUSED CALIPER WEAR.
- [SDR AC2A201304150001](https://openairdocs.org/sdr/AC2A201304150001.md): Brake · false indication · Apr 8, 2013 · N427HV · Bell 427
  > ROTOR BRAKE CAS MESSAGE APPEARED SHORTLY AFTER TAKEOFF. FOLLOWED EMERGENCY PROCEDURES AND RETURNED TO DEPARTURE. TESTED SWITCHES IN CALIPER AND FOUND THEM TO BE SERVICEABLE. RECONNECTED CONNECTOR PLUGS AND PERFORMED AN OPS CHECK ON THE ROTOR BRAKE SYS AND F
- [SDR ALGA201202141208](https://openairdocs.org/sdr/ALGA201202141208.md): Housing · corroded · Feb 14, 2012 · N647AL · Bell 407
  > ROTOR BRAKE HOUSING CORRODED BEYOND LIMITS.
- [SDR ALGA201202141207](https://openairdocs.org/sdr/ALGA201202141207.md): Housing · corroded · Feb 14, 2012 · N647AL · Bell 407
  > ROTOR BRAKE HOUSING CORRODED BEYOND LIMITS.
- [SDR ALGA201202141206](https://openairdocs.org/sdr/ALGA201202141206.md): Housing · corroded · Feb 14, 2012 · N647AL · Bell 407
  > ROTOR BRAKE HOUSING CORRODED BEYOND LIMITS.
- [SDR ALGA201202141205](https://openairdocs.org/sdr/ALGA201202141205.md): Housing · corroded · Feb 14, 2012 · N647AL · Bell 407
  > MAIN ROTOR BRAKE HOUSING CORRODED BEYOND LIMITS.
- [SDR GAKA2012F00040](https://openairdocs.org/sdr/GAKA2012F00040.md): Caliper · out of adjust · Jan 20, 2012 · N428SL · Bell 429
  > MADE AN UNSCHEDULED LANDING AFTER DEPARTURE, PILOT NOTICED A CAS MESSAGE "ROTOR BRAKE". THERE WERE NO ADVERSE INDICATIONS THAT THE ROTOR BRAKE HAD ACTUALLY INADVERTANTLY ENGAGED. MX INSPECTED THE ROTOR BRAKE SYS AND MADE ADJUSTMENTS TO THE SENSOR THAT CALC
- [SDR 2011FA0000652](https://openairdocs.org/sdr/2011FA0000652.md): Pad · cracked · Sep 21, 2011
  > ROTOR BRAKE PAD EDGES CRACKED OR CHIPPED FROM NEW. WHEN INSTALLING ON DISK PAD COMES APART AT EDGE. VIBRATION OF RIVET GUN CAUSES FURTHER CRACKING OR CHIPPING AT EDGE WHEN INSTALLING ON THE DISK. PROBABLE CAUSE BAD BATCH OF ROTOR BRAKE PADS. MFG F0210 CODE
- [SDR PG92011F00010](https://openairdocs.org/sdr/PG92011F00010.md): Brake · cracked · Sep 21, 2011 · N893PA · Urocop EC130B4
  > ROTOR BRAKE PAD CRACKED FROM NEW. EDGES FALLING APART WHILE INSTALLED ON ACFT. R & R WITH ONLY 94.7 HRS PART TT. PROBABLE CAUSE MAY BE BAD BATCH. FOUND A 1200T INSPECTION. MFRF0210 CODE.
- [SDR CA101110007](https://openairdocs.org/sdr/CA101110007.md): Nut · loose · Nov 8, 2010 · Aerosp AS355N
  > (CAN) PILOT MADE PRECAUTIONARY LANDING SHORTLY AFTER TAKEOFF FROM BASE IN AIRPORT INFIELD DUE TO A SUDDEN ABNORMAL VIBRATION. UPON INSPECTING THE AIRCRAFT IT WAS DETERMINED THAT THE INPUT PINION/ROTOR BRAKE FLANGE NUT HAD BECOME LOOSE. FURTHER INSPECTION REV
- [SDR QMLA2010102510071](https://openairdocs.org/sdr/QMLA2010102510071.md): Disc · unserviceable · Oct 25, 2010 · N220LN · Bell 222UT
  > DURING LIFT OFF, ROTORBRAKE WARNING LIGHTS ILLUMINATED, FOLLOWED BY TRANSMISSION CHIP LIGHTS AND TRANSMISSION OIL PRESSURE. CREW REPORTED SMELLING SOMETHING BURNING. PILOT IMMEDIATELY LANDED ACFT AND SHUTDOWN. INSPECTED ROTORBRAKE AREA AND FOUND ROTORBRAKE DIS
- [SDR JBZA2010F00100](https://openairdocs.org/sdr/JBZA2010F00100.md): Disc · cracked · Apr 20, 2010 · N38RX · Urocop EC135P2
  > PILOT REPORTED "ROTOR BRAKE CHATTER DURING USE". MECHANIC FOUND ROTOR BRAKE DISK HAD (2) CRACKS, ONE 1.1250" LONG, ONE 1 14" LONG, LOCATED ROUGHLY 180 DEGREES APART, BOTH CRACKS EMANATING OUTWARD TO THE EDGE OF THE DISK. INSTALLED NEW BRAKE ROTOR DISK. FAILED
- [SDR CA081204004](https://openairdocs.org/sdr/CA081204004.md): Handle · damaged · Dec 3, 2008 · Bolkms BO105S
  > (CAN) DURING CRUISE, THE ROTOR BRAKE HANDLE DOWN WARNING LIGHT TURN ON INTERMITTENTLY. THE WARNING LIGHT SWITCH IS ADJUSTED TO WARN PILOT IF THE HANDLE IS NOT IN ITS NEUTRAL OR DOWN POSITION AND TO VERIFY IF THE REASON IS NOT THE PILOT`S SEAT BELT BEING UNDER
- [SDR QML2008F00016](https://openairdocs.org/sdr/QML2008F00016.md): Brake · out of adjust · Oct 16, 2008 · N402MA · Bell 222U
  > ON REPOSITION FLIGHT, APPROX 6 MILES FROM LANDING, ROTOR BREAK AND MASTER CAUTION ILLUMINATED. THIS IS A LAND AS SOON AS POSSIBLE EVENT. CONSULTED THE CHECKLIST. VERIFIED POSITION OF ROTOR BREAK HANDLE. THE HANDLE WAS SECURE. IN ADDITION, VERIFIED TRANSMI
- [SDR CA071130012](https://openairdocs.org/sdr/CA071130012.md): Brake · damaged · Nov 30, 2007 · Urocop EC120B
  > (CAN) MECHANICAL DAMAGE TO ROTOR BRAKE GRID ASSEMBLY, DUE TO IMPROPER OPERATION. TRIGGER WAS NOT DEPRESSED PRIOR TO ENGAGING ROTOR BRAKE HANDLE CAUSING MECHANICAL DAMAGE TO GRID ASSEMBLY. NEW GRID ASSEMBLY INSTALLED (TC NR 20071130012)
- [SDR U0GA113886](https://openairdocs.org/sdr/U0GA113886.md): Damper · sheared · Jan 23, 2007 · N822MM · Agusta A119
  > PILOT FELT VIBRATION WHEN ROTOR BRAKE WAS ENGAGED AFTER LANDING AND SHUTDOWN. POSTFLIGHT INSPECTION REVEALED THE DAMPER HAD SHEARED AT THE ROD END FLUSH WITH THE OUTER THREADED PORTION OF THE DAMPER ASSEMBLY
- [SDR AC2A110523](https://openairdocs.org/sdr/AC2A110523.md): Caliper · leaking · Jul 22, 2006 · N7159J · Bell 206L3
  > FOUND CALIPER LEAKING / REPLACED CALIPER
- [SDR KBM2006F00222](https://openairdocs.org/sdr/KBM2006F00222.md): Brake Disc · worn · Jun 21, 2006 · N230SH · Snias AS350B2
  > MAIN ROTOR BRAKE DISK, WORN BEYOND LIMITS, REMOVED AND REPLACED. (K)
- [SDR KBM2006F00157](https://openairdocs.org/sdr/KBM2006F00157.md): Brake Cable · seized · Apr 15, 2006 · N345SH · Snias AS350B2
  > ROTOR BRAKE CABLE, UNIT SEIZED, REMOVED AND REPLACED. (K)
- [SDR CA060310006](https://openairdocs.org/sdr/CA060310006.md): Flange · failed · Mar 10, 2006 · Skrsky S61A
  > ATTEMPTED TO REPLACE A PART DAMAGED BEYOND REPAIR. A PART WAS LOCATED AND ACQUIRED TO REPLACE DAMAGED UNIT. PART WAS DELIVERED TO US FOR REVIEW. SUPPLIER SUBMITTED VARIOUS CERTIFICATION DOCUMENTS TO VALIDATE PART. PART JOURNAL IS UNDERSIZE AND IN NEED OF A
- [SDR AC2A108368](https://openairdocs.org/sdr/AC2A108368.md): Puck · chipped · Feb 12, 2006 · N427GT · Bell 427
  > DURING AN INSPECTION THEY FOUND THE ROTOR BRAKE PUCK CHIPPED/ THE CALIPER WAS REPLACED.
- [SDR CA060216002](https://openairdocs.org/sdr/CA060216002.md): Caliper · binding · Jan 24, 2006 · Bolkms BO105C
  > (CAN) PISTON DOES NOT RETRACT INTO CALIPER HOUSING AFTER BRAKING CAUSING ROTOR BRAKE PAD TO REMAIN IN CONTACT WITH BRAKE DISC. (TC NR 20060216002)
- [SDR CA060130001](https://openairdocs.org/sdr/CA060130001.md): Spring · broken · Jan 16, 2006 · Robsin R44RAVENII
  > DURING THE FIRST 100 HR INSPECTION CARRIED OUT ON THE AIRCRAFT, IT WAS NOTICED THAT THE ABOVE SPRING WAS BROKEN. IT APPEARS TO HAVE BROKEN AT THE UPPER ATTACHMENT POINT WHERE IT ATTACHES TO THE LOWER ROTOR BRAKE CALIPER ARM. THE SPRING WAS REPLACED WITH NEW.
- [SDR ALG2005F00079](https://openairdocs.org/sdr/ALG2005F00079.md): Caliper · loose · Oct 15, 2005 · N265AL · Bell 206L4
  > DURING DAILY INSPECTION THE MECHANIC FOUND ROTOR BRAKE BOLTS LOOSE AND A PAD WAS MISSING, REMOVED AND REPLACED BOTH CALIPERS WITH SERVICEABLE SET AND THE AC WAS RETURNED TO SERVICE. (K)
- [SDR ALGA106433](https://openairdocs.org/sdr/ALGA106433.md): Bearing · failed · Sep 22, 2005 · Bell 412
  > TRANSMISSION ASSY MAKING METAL, DISSEMBLED FOUND ROTOR BRAKE QUILL DUPLEX BEARING BEARING BREAKING DOWN. / REMOVEN AND REPLACED DUPLEX BEARING P/N 222-342-420-101
- [SDR ALG2005F00066](https://openairdocs.org/sdr/ALG2005F00066.md): Bolt · defective · Aug 21, 2005 · N265AL · Bell 206L4
  > DURING MAINTENANCE SERVICE CHECK, THE LT ROTOR BRAKE CALIPER WAS FOUND TO BE DEFECTIVE. THE FOLLOWING ITEMS WERE REMOVED AND REPLACED WITH SERVICEABLE COMPONENTS: ROTOR BRAKE DISK, BOLTS AND 2 ROTOR BRAKE CALIPERS. IAW MM. (K)
- [SDR YTRR104408](https://openairdocs.org/sdr/YTRR104408.md): Caliper · cracked · Jun 30, 2005 · N595RL · Bell 407
  > ON ROUTINE INSPECTION FOUND CALIPER HOUSING CRACKED AT MOUNTING FLANGE ON ROTOR BRAKE.
- [SDR ERAA096629](https://openairdocs.org/sdr/ERAA096629.md): Oil Cooler · leaking · May 25, 2004 · N129EH · Bolkms BO105S
  > LEAK AT TOP OF NR 2 COOLING AREA. SENT TO DRAKE AIR FOR REPAIR. CLEANED, FLUSHED, REPAIRED/OVERHAULED, TESTED AND INSPECTED.
- [SDR CA040420001](https://openairdocs.org/sdr/CA040420001.md): Structure · damaged · Apr 15, 2004 · Bolkms BO105S
  > (CAN) THE COLLECTIVE FRICTION ASSEMBLY WAS REPORTED FEELING LOOSE. LOOSENESS WAS TRACED TO THE BRAKE BOX, WHICH WAS MOUNTED WITH 6MM BOLTS IN 10MM HOLES.

Next page: https://openairdocs.org/jasc/6321/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 = '6321'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/6321/reports

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