# Service difficulty reports: JASC 6114

A list on [JASC 6114](https://openairdocs.org/jasc/6114.md).

Reports filed under 6114 · Propeller Hub Section, newest first.

Page 1 of 25 · 1,249 reports

- [SDR 2026FA0000253](https://openairdocs.org/sdr/2026FA0000253.md): Bulkhead · cracked · Apr 6, 2026 · N9698V · Cessna 172M
  > FOUND FORWARD PROPELLER SPINNER BULKHEAD CRACKED AT 3 PROPELLER BOLT HOLES. 428.3 HOURS ON PART. WAS REPLACED PRIOR ON APR 21, 2025. PROPELLER WAS BALANCED ON 1/13/2025. BALANCED TO.07 IPS.
- [SDR 2025F00224](https://openairdocs.org/sdr/2025F00224.md): Piston · separated · Sep 16, 2025 · N96GB · Beech 58
  > PISTON CYLINDER BECAME SEPARATED FROM THE HUB. IT APPEARS THAT THE THREADS STRIPPED OUT OF THE HUB ABOUT 1/8 INCH. AT THIS TIME WE ARE SENDING TO H&S PROPELLER IN MICHIGAN FOR AN DETAILED TEAR DOWN INSPECTION REPORT TO DETERMINE THE FAILURE.
- [SDR FXTA20250410001](https://openairdocs.org/sdr/FXTA20250410001.md): Hub · leaking · Apr 9, 2025 · N404BA · Cessna 208B
  > PROP INSTALLED AND RED OIL NOTED LEAKING FROM PROP BLADE ROOTS AFTER GROUND RUNS. FOLLOWED MANUFACTURES TROUBLESHOOTING AND LEAK CONTINUED. CLEANED/DRIED AND LET SIT OVERNIGHT. FOUND OIL LEAKING FROM BLADE #4 NEXT MORNING WITH PROP STATIC. "0" ENTER FOR PROP
- [SDR FXTA20240408001](https://openairdocs.org/sdr/FXTA20240408001.md): Hub · leaking · Apr 7, 2025 · N404BA · Cessna 208B
  > RED OIL LEAKING FROM PROP HUB. DISCOVERED DURING POST FLIGHT INSPECTION. 0 ENTER FOR PROP CYCLES BECAUSE THEY ARE NOT TRACK ON PROPELLERS.
- [SDR FXTA20250404001](https://openairdocs.org/sdr/FXTA20250404001.md): Propeller · leaking · Apr 2, 2025 · N867BA · Cessna 208B
  > RED OIL FOUND ON HUB. PREFORMED INSPECTIONS PER MPC26 AND PROPELLER STILL LEAKED RED OIL. PROPELLER REMOVED AND REPLACED. CYCLES ARE NOT TRACKED BUT "0" ENTERED TO ALLOW FORM TO SUBMIT.
- [SDR 2024FA0000253](https://openairdocs.org/sdr/2024FA0000253.md): Bulkhead · worn · Mar 22, 2024 · N787EC · Diamon DA40
  > CRACK IN EDGE NEAR REINFORCEMENT PLATE AND ONE REINFORCEMENT PLATE WITH SHEARED RIVETS.
- [SDR 2024FA0000241](https://openairdocs.org/sdr/2024FA0000241.md): Bulkhead · worn · Mar 21, 2024 · N415KG · Diamon DA40
  > SIX-INCH CRACK EMANATING FROM OUTSIDE EDGE AND RIVETS SHEARED ON REINFORCEMENT PLATE.
- [SDR 2024FA0000456](https://openairdocs.org/sdr/2024FA0000456.md): Hub · cracked · Feb 24, 2024 · N750YB
  > PROPELLER BLADE SEPARATION AT HUB CAUSING DAMAGE TO THE ENGINE MOUNT THAT BROKE ALL BUT ONE ENGINE (ROTAX 912) MOUNT TUBE. ONE OF THE THREE REMAINING PROPELLER BLADES EXHIBITED A VISIBLE CRACK AT THE HUB.
- [SDR 2023FA0000789](https://openairdocs.org/sdr/2023FA0000789.md): Hub · leaking · Nov 27, 2023 · Piper PA32R300
  > PROPELLER MODEL B3D34C433-C, RED DYED OIL COMING FROM BLADE HUB, ON COWLING, WIND SCREEN AND PUDDLE ON HANGER FLOOR. PROP OVERHAUL DATE 12/ 2018 T.T. 604 HRS, DISASSEMBLED AND RESEALED 3/2022 T.T. 900 HRS, LEAKAGE REAPPEARED ON 11/2023 T.T. 1150.0 HRS.
- [SDR HYIA20220316001](https://openairdocs.org/sdr/HYIA20220316001.md): Propeller · cracked · Mar 15, 2022 · N740CA · Cessna 402C
  > PILOT REPORTED THE LEFT PROPELLER CONTROL WAS UNRESPONSIVE AT CLIMB OUT AND PERFORMED AN AIR RETURN. COMPANY MAINTENANCE INSPECTED THE LEFT PROPELLER AND FOUND CRACKS IN THE PROPELLER HUB AT ALL 3 BLADE SOCKET LOCATIONS. AT BLADE 1 LOCATION THE CRACK IS APPR
- [SDR 2022FA0000149](https://openairdocs.org/sdr/2022FA0000149.md): Propeller · worn · Mar 11, 2022 · N271RG · Cessna R182
  > PROPELLER WAS LEAKING OIL. HAD OUR SHOP PULL THE PROPELLER AND SEND IT OFF TO BE RE-SEALED. PROP SHOP DISCOVERED THAT THE PISTON HAD WORN OUT OF SPEC. SCORING WAS FOUND ON THE INSIDE OF THE PISTON WHERE IT RIDES ON THE GUIDE. WEAR MARS ARE 180 DEGREES APART ON
- [SDR 4MZA20210526013](https://openairdocs.org/sdr/4MZA20210526013.md): Hub · debonded · May 25, 2021 · N343PA · Amazon MK27
  > QUALITY ESCAPE OF NEW PART FROM OUTSIDE VENDOR. METALLIC HUB WITHIN CARBON FIBER ROTOR UNSEATED. EVIDENCE OF INADEQUATE BOND NOTED DURING POST INSPECTION.
- [SDR 2020FA0000424](https://openairdocs.org/sdr/2020FA0000424.md): Hub · cracked · Sep 28, 2020
  > PROPELLER WAS IN FOR OVERHAUL. CRACK WAS DETECTED VIA ECI ON BLADE SOCKET NUMBER ONE. PROPELLER IS CRACKED IN THE THREADS OF THE HUB SOCKET.
- [SDR FG6R20191016001](https://openairdocs.org/sdr/FG6R20191016001.md): Hub · failed · Oct 15, 2019
  > IT WAS REPORTED THE AIRCRAFT PROPELLER HAD RELEASED ENGINE OIL DURING FLIGHT AND COVERED THE PILOT'S WINDSHIELD. PROPELLER WAS INSPECTED AT FG6R375D AND FAILED PRESSURE TESTS THAT ARE REQUIRED ON BOTH HUB HALFS.
- [SDR CA191002038](https://openairdocs.org/sdr/CA191002038.md): Seal · leaking · Jun 30, 2019 · Cessna 208
  > (CAN) PROPELLER REMOVED FROM AIRCRAFT AND SENT TO REPAIR FACILITY. PROPELLER DISMANTLED FOR INVESTIGATION OF RED DYE OIL LEAK. LEAK FOUND TO BE FROM AFT BETA ROD TO HUB SEAL. PROPELLER REASSEMBLED AND PRESSURE TESTED. PROPELLER REINSTALLED ON AIRCRAFT AND RETU
- [SDR CA190619008](https://openairdocs.org/sdr/CA190619008.md): Cap · sheared · Jun 18, 2019 · Bombdr DHC8400
  > (CAN) WHILE TORQUING PROP CAP ATTACHMENT SCREWS ONE SHEARED OFF BEFORE IT MET THE REQUIRED TORQUE. PICTURES ATTACHED (TC# 20190619008)
- [SDR CA190409009](https://openairdocs.org/sdr/CA190409009.md): Bearing Race · fractured · Apr 8, 2019 · Dhav DHC8102
  > (CAN) WHILE TROUBLESHOOTING A LH PROP LEAK MAINTENANCE DISCOVERED THE INNER BEARING RACE FOR THE #2 BLADE TO HAVE BROKEN AND FAILED. LH PROP HUB AND BLADES HAVE BEEN REPLACED, AND THE A/C RETURNED TO SERVICE. P/N: 782303-1 S/N: NSN A/C HOURS: 67769 A/C CYCLES
- [SDR 2020FA0000129](https://openairdocs.org/sdr/2020FA0000129.md): Hub · cracked · Apr 1, 2019
  > SEVERAL CRACKS FOUND IN MOUNTING BOLT THREADS OF HUB DURING MAGNETIC PARTICLE INSPECTION AT OVERHAUL.
- [SDR EY2R20190225001](https://openairdocs.org/sdr/EY2R20190225001.md): Hub · cracked · Feb 22, 2019 · Saab 340B
  > 2 SMALL CRACKS IN MOUNTING FLANGE DOWEL PIN HOLE.
- [SDR 5JRR201810197878](https://openairdocs.org/sdr/5JRR201810197878.md): Thrust Bearing · worn · Sep 25, 2018 · N804WW · Airtrc AT802A
  > PROPELLER HUB PILOT TUBES SHOW ACCELERATED WEAR AT 827 HOURS SINCE NEW. PROPELLER THRUST BEARINGS SHOW ACCELERATED WEAR AS WELL. WE BELIEVE THE GREASE THAT THIS PROPELLER WAS LUBRICATED WITH WAS BROKEN DOWN TO THE CONSISTENCY OF ENGINE OIL. DUE TO THE LACK OF
- [SDR N3XR2018041300001](https://openairdocs.org/sdr/N3XR2018041300001.md): Hub · cracked · Apr 12, 2018 · N312ER · Diamon DA42NG
  > DURING LINE MX THE TECHNICIAN MOVED THE PROPELLER AND HEARD AN UNUSUAL SOUND. DUE TO THE NATURE OF THE SOUND IT WAS DECIDED TO REMOVE THE GEARBOX AND INSPECT THE DRIVE TRAIN FOR DISCREPANCIES. THE HUB (P/N-E4A-73-000-203-030) WAS FOUND TO HAVE ALL OF THE "SPOK
- [SDR RJWR201804040131](https://openairdocs.org/sdr/RJWR201804040131.md): Bolt · misinstalled · Apr 4, 2018 · N90230 · Cessna 208B
  > AIRCRAFT ARRIVED NEW TO THE REPAIR STATION FOR FLOAT INSTALLATION MODIFICATION. UPON REMOVING PROPELLER FOR OUTSIDE PITCH LOCK MODIFICATION, WE FOUND THE SPECIAL CHAMFERED HEAD BOLTS PN B-3339 AND SPECIAL CHAMFERED WASHERS PN A-2048-2 ATTACHING THE PROPELLER
- [SDR EY2R20180320002](https://openairdocs.org/sdr/EY2R20180320002.md): Hub · cracked · Mar 16, 2018 · Casa CN235
  > CRACK FOUND AROUND DOWEL PIN HOLE. THE CRACK WAS FOUND BY FLUORESCENT PENETRANT INSPECTION. AFTER MACHINING THE HOLE OVERSIZE FOR A BUSHING MODIFICATION.
- [SDR HYIA20180222001](https://openairdocs.org/sdr/HYIA20180222001.md): Hub · damaged · Feb 22, 2018 · N42836 · Aerosp ATR42320
  > DURING ROUTINE BLADE CHANGE DISCOVERED DAMAGE AT BLADE ROOT AND PROPELLER HUB, REMOVED PROPELLER ASSEMBLY FOR FURTHER INVESTIGATION. ADDITIONAL RESULTS TO BE SUPPLIED AS AVAILABLE.
- [SDR 2017FA0000649](https://openairdocs.org/sdr/2017FA0000649.md): Hub · cracked · Dec 18, 2017 · N5027 · Lkheed 382
  > DURING PROPELLER RE-INSTALLATION AFTER AND ENGINE CHANGE. A 2" CRACK WAS VISUALLY NOTED FORWARD SURFACE OF THE PROPELLER HUB (BARREL HALF). THE RII INSPECTOR NOTED THE CRACK. AFTER DISASSEMBLING OF THE PROPELLER IT WAS NOTED THE FIRST THREAD OF THE HUB HAD THE
- [SDR TIQR2011027000029](https://openairdocs.org/sdr/TIQR2011027000029.md): Barrel · cracked · Oct 26, 2017 · N3796B · Lkheed 382G
  > DURING A PROPELLER INSTALLATION PROCEDURE, A CRACK WAS NOTICED ON THE FORWARD SURFACE OF THE PROPELLER REAR BARREL HALF ASSEMBLY, WHERE THE PITCH LOCK REGULATOR EXTERNALLY THREADED RING SCREWS INTO THE REAR BARREL. PRIOR TO THE PLACEMENT OF THE PITCH LOCK RAT
- [SDR 2017FA0000424](https://openairdocs.org/sdr/2017FA0000424.md): Hub · cracked · Aug 11, 2017 · N6198B · Cessna 182A
  > PROPELLER WAS BROUGHT IN FOR REPAIR, DUE TO RED DYE LEAKAGE. DURING THE COURSE OF INSPECTION, A CRACK WAS FOUND. THE HUB IS CRACKED ON THE REAR SIDE OF BLADE SOCKET NR 1. ACFT ENG IS A O470-50 WITH A P PONK CONVERSION, STC SA02092SE, WHICH RAISES THE HORSEP
- [SDR 2017FA0000255](https://openairdocs.org/sdr/2017FA0000255.md): Stop · stripped · Jun 20, 2017 · N134D · Piper PA44180
  > DURING ROUTINE SHEDULED MAINTENANCE, MAINTENANCE DISCOVERED THE RIGHT LOW PITCH STOP WAS STRIPPED.
- [SDR 2017FA0000204](https://openairdocs.org/sdr/2017FA0000204.md): Stop · stripped · May 25, 2017 · N781LU · Piper PA44180
  > DURING INSPECTION, MAINTENANCE NOTED A LOW PITCH STOP TREADS WERE STRIPPED AND DAMAGED HUB THREADS AS WELL. THE PROPELLER WAS SENT OUT FOR REPAIR,
- [SDR 2017FA0000205](https://openairdocs.org/sdr/2017FA0000205.md): Stop · stripped · Apr 19, 2017 · N781LU · Piper PA44180
  > DURING SCHEDULED INSPECTION MAINTENANCE CREW DISCOVERED LOW PITCH STOP WAS STRIPPED REQUIRING REPLACEMENT.
- [SDR 2017FA0000219](https://openairdocs.org/sdr/2017FA0000219.md): Stop · stripped · Apr 15, 2017 · N784LU · Piper PA44180
  > DURING A ROUTINE INSPECTION, THE RIGHT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED.
- [SDR 2017FA0000206](https://openairdocs.org/sdr/2017FA0000206.md): Stop · stripped · Feb 22, 2017 · N781LU · Piper PA44180
  > DURING ROUTINE INSPECTION, MAINTENANCE FOUND LOW PITCH STOP STRIPPED.
- [SDR 2017FA0000029](https://openairdocs.org/sdr/2017FA0000029.md): Hub · cracked · Jan 26, 2017 · N10WE · Beech B60
  > A HUB CRACK DISCOVERED DURING ROUTINE MAINTENANCE. THE HUB WAS REPLACED WITH A SERVICEABLE UNIT.
- [SDR 2016FA0000669](https://openairdocs.org/sdr/2016FA0000669.md): Hub · cracked · Dec 22, 2016
  > PENETRANT AND VISUAL INSPECTION THAT REVEALED SEVERAL CRACKS IN THE BLADE ARM OF THE ENGINE SIDE HUB HALF. HUB CONDEMNED AND SENT TO MANUFACTURER FOR EXAMINATION.
- [SDR 2016FA0000668](https://openairdocs.org/sdr/2016FA0000668.md): Hub · cracked · Dec 22, 2016
  > LIQUID PENETRANT AND VISUAL INSPECTION THAT REVEALED SEVERAL CRACKS IN THE BLADE ARM OF THE ENGINE SIDE HUB HALF. HUB CONDEMNED AND SENT TO MANUFACTURER FOR EXAMINATION.
- [SDR 2016FA0000655](https://openairdocs.org/sdr/2016FA0000655.md): Propeller · burned · Dec 14, 2016 · N905MM · Waco YMFF5C
  > PILOT REPORTED VIBRATION IN FLIGHT 1800 RPM. ON LANDING ROLL OUT PILOT SMELLED WOOD SMOKE. VISUAL INSPECTION OF PROPELLER AND HUB FOUND SOOT ESCAPING FROM BEHIND FORWARD CRUSH PLATE AND HUB BOLTS FINGER TIGHT. REMOVAL OF FRONT CRUSH PLATE FOUND 3 OF 8 BOLTS
- [SDR 2017FA0000207](https://openairdocs.org/sdr/2017FA0000207.md): Stop · stripped · Nov 17, 2016 · N781LU · Piper PA44180
  > DURING ROUTINE INSPECTION, MAINTENANCE FOUND PROPELLER LOW PITCH STOP STRIPPED.
- [SDR 2017FA0000208](https://openairdocs.org/sdr/2017FA0000208.md): Stop · stripped · Jul 4, 2016 · N781LU · Piper PA44180
  > DURING ROUTINE INSPECTION, MAINTENANCE FOUND THE LEFT PROPELLER LOW PITCH STOP STRIPPED.
- [SDR 2017FA0000215](https://openairdocs.org/sdr/2017FA0000215.md): Stop · stripped · Jun 13, 2016 · N134DW · Piper PA44180
  > DURING ROUTINE INSPECTION THE LT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED.
- [SDR 2017FA0000214](https://openairdocs.org/sdr/2017FA0000214.md): Stop · stripped · Apr 16, 2016 · N134DW · Piper PA44180
  > DURING ROUTINE INSPECTION, THE LEFT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED.
- [SDR 2017FA0000213](https://openairdocs.org/sdr/2017FA0000213.md): Stop · stripped · Jan 30, 2016 · N134DW · Piper PA44180
  > DURING ROUTINE INSPECTION, THE PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED.
- [SDR CA160122008](https://openairdocs.org/sdr/CA160122008.md): Hub · corroded · Jan 21, 2016
  > (CAN) DURING A MAJOR INSPECTION CORROSION WAS NOTE ON ONE OF THE BUSHING IN THE DOWEL HOLE, THE HOLE THAT ACCEPTS THE DOWL ON THE PROPELLER SHAFT. REMOVAL OF THE BUSHING IN THE DOWEL HOLES IN THE PROPELLER HUB IS ALLOWED ONLY AT SPEFIC FACILITIES. THE HUB WAS
- [SDR CA151123010](https://openairdocs.org/sdr/CA151123010.md): Liner · damaged · Nov 20, 2015 · Bombdr DHC8400
  > (CAN) DURING A SCHEDULED LT PROPELLER BLADE RE-TORQUE MAINTENANCE FOUND THAT BLADE NR 6 WAS AT ZERO TORQUE. BLADE NR 6 REMOVED FROM PROP FOR INVESTIGATION AND REPAIR. FOUND PROP HUB BADLY CONTAMINATED WITH METAL AND PROP HUB SCORED WITH BEARINGS DAMAGED FROM M
- [SDR CA151120007](https://openairdocs.org/sdr/CA151120007.md): Hub · separated · Nov 18, 2015 · Dhav DHC8102
  > (CAN) NR 2 PROP ASSEMBLY REQUIRES REPLACEMENT DUE TO INTERNAL METAL DEBRIS AND DAMAGE FOUND. NR 2 PROP ASSY REPLACED IAW AMM 61-10-00 AND CHECKED SERVICEABLE. NR 2 PROP ASSY INSTALLATION AND CHECKED OK.
- [SDR CA151118011](https://openairdocs.org/sdr/CA151118011.md): Bearing · cracked · Nov 17, 2015
  > (CAN) PROPELLER WAS SENT INTO OUR SHOP FOR FOD ON NR 4 BLADE AND UPON DISASSEMBLY WE FOUND ONE CRACKED BEARING ON NR 1 BLADE AND FOUND ALL BEARINGS ON ALL BLADES TO BRINELLED. BLADES NR 4 AND NR 2 SENT TO MFG FOR EVALUATION AND REPAIR/OVERHAUL. ALL BEARINGS W
- [SDR CA151105007](https://openairdocs.org/sdr/CA151105007.md): Spring · worn · Nov 4, 2015 · Piper PA31325
  > (CAN) AT THE PREVIOUS OVERHAUL THE LATCH SPRINGS WERE NOT REPLACED. REPLACEMENT IS MANDATORY IAW MANUAL #117D.
- [SDR CA151029022](https://openairdocs.org/sdr/CA151029022.md): Hub · leaking · Oct 28, 2015 · Bombdr DHC8400
  > (CAN) MAINTENANCE DISCOVERED GREASE/OIL ON THE NR 1 ENGINE COWL. IT WAS DETERMINED THAT THE NR 1 PROPELLER HUB WAS LEAKING. THE PROPELLER WAS REPLACED AND THE AIRCRAFT WAS SUBSEQUENTLY RELEASED FOR SERVICE.
- [SDR 2015FA0000496](https://openairdocs.org/sdr/2015FA0000496.md): Hub · cracked · Oct 19, 2015 · N6621A · Cessna T210N
  > DURING ROUTINE INSPECTION, CRACKS WERE DISCOVERED IN THE HUB AT AFT EDGE, MATING SURFACE TO ENGINE CRANK FLANGE. THE MOST PROMINENT CRACK IS ABOUT.5" LONG. THERE IS NO DAMAGE HISTORY FOR THIS PROP. THE PROP IS INSTALLED UNDER STC SA3104SO TO AN ENGINE INSTA
- [SDR CA150928005](https://openairdocs.org/sdr/CA150928005.md): Bearing · damaged · Sep 25, 2015 · Aerosp ATR42320
  > (CAN) BLADE RETAINING BALL BEARING FOUND DAMAGED DURING BLADE REMOVAL. PIECES OF THE BALL BEARING WERE FOUND INSIDE THE HUB AFTER FURTHER INVESTIGATION. THE 2 ADJOINING BEARINGS WERE FOUND DISCOLORED. NO OTHER DAMAGE WAS FOUND ON THE BLADE RACE OR HUB RACE.
- [SDR 2017FA0000218](https://openairdocs.org/sdr/2017FA0000218.md): Stop · stripped · Sep 9, 2015 · N134DW · Piper PA44180
  > DURING A ROUTINE INSPECTION, THE RIGHT PROPELLER LOW PITCH STOP WAS FOUND STRIPPED.

Next page: https://openairdocs.org/jasc/6114/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 = '6114'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/6114/reports

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