# Service difficulty reports: JASC 6120

A list on [JASC 6120](https://openairdocs.org/jasc/6120.md).

Reports filed under 6120 · Propeller Controlling System, newest first.

Page 1 of 29 · 1,421 reports

- [SDR HYIA20260522001](https://openairdocs.org/sdr/HYIA20260522001.md): Governor · faulted · May 14, 2026 · N989CA · Tecnam P2012
  > PILOT REPORTED AN UN-COMMANDED FEATHER ON THE RIGHT ENGINE. MAINTENANCE INSPECTED RH PROP AND FOUND NO DEFECTS NOTED AT THIS TIME. REMOVED RH PROP GOVERNOR AND INSPECTED INSIDE CRANK CASE AND FOUND NO DEFECTS. NOTED THAT RH PROP GOVERNOR NOT HITTING BOTH STOPS
- [SDR 2026FA0000203](https://openairdocs.org/sdr/2026FA0000203.md): Control Cable · broken · Mar 20, 2026 · N9055P · Piper PA24260
  > AIRCRAFT ABORTED TAKEOFF DUE TO LOW POWER. UPON INSPECTION FOUND PROPELLOR GOVERNOR CABLE BROKEN. MAINTENANCE REPLACED THE PROP CONTROL CABLE AND PROP CONTROL CABLE ROD END.
- [SDR 2024FA0000723](https://openairdocs.org/sdr/2024FA0000723.md): Solenoid · worn · Sep 18, 2024 · N555AL · Beech B300
  > THE LH PROPELLER PITCH SOLENOID WAS STICKING AND NEEDED TO BE REPLACED. WAS NOT ALLOWING THE THROTTLE TO ADVANCE PROPERLY ON ROLLOUT FOR TAKEOFF.
- [SDR 7C7A2023040600025](https://openairdocs.org/sdr/7C7A2023040600025.md): Pcu · failed · Apr 1, 2023 · N887EA · Dhav DHC8106
  > THIS IS FILLING IN DETAILS FOR SDR FILED ON 4/1/2023 7C7A2023040100020 ENGINE TORQUE INCREASED 3% UNCOMMAND IN FLIGHT. REPEATED 2 MORE TIMES R/R #1 PCU
- [SDR QXEA2022122700346](https://openairdocs.org/sdr/QXEA2022122700346.md): Pec · malfunctioned · Dec 27, 2022 · N435QX · Bombdr DHC8402
  > AUTO FEATHER DID NOT ARM WITH POWER LEVERS SET IN THE DETENT. REMOVED FROM SERVICE. CDS FAULT 400 - #2 PROP CHANNEL #1 AND #2. REMOVED AND REPLACED #2 PEC IAW FIM 61-20-09-810-806. OPS CHECK GOOD. FAULT DID NOT RETURN. RETURNED TO SERVICE.
- [SDR QXEA2022121500389](https://openairdocs.org/sdr/QXEA2022121500389.md): Circuit Breaker · tripped · Dec 14, 2022 · N446QX · Bombdr DHC8402
  > NR 2 ENGINE ALTERNATE FEATHER PUMP CIRCUIT BREAKER TRIPPED DURING MAINTENANCE UNFEATHERING ATTEMPT. AIRCRAFT DOWN FOR REPAIRS.
- [SDR QXEA2022120900336](https://openairdocs.org/sdr/QXEA2022120900336.md): Switch · inoperative · Dec 6, 2022 · N443QX · Bombdr DHC8402
  > #1 PROP FAILED PROP OVERSPEED GOVENOR TEST. REPLACED OFF SWITCH IAW AMM 31-31-03-960-801 C/W OPERATIONAL TEST OF PROP OVERSPEED GOVERNOR IAW AMM 61-20-00-710-803 NO DEFECTS NOTED.
- [SDR UOIA2022112200004](https://openairdocs.org/sdr/UOIA2022112200004.md): Control Cable · lack of lube · Nov 22, 2022 · N904GD · Bnorm BN2B26
  > LEFT PROPELLER GETTING STUCK INTERMITTENT.
- [SDR QXEA2022110400315](https://openairdocs.org/sdr/QXEA2022110400315.md): Pec · none · Nov 1, 2022 · N430QX · Bombdr DHC8402
  > AUTOFEATHER FAILED TEST. INDICATED A/F TEST FAILED ON #1, A/F TEST ABORT ON #2. CDS POSTED FAULT CODE 494 CHANNEL A &B ON BOTH ENGINES. C/W Q400 FIM TASK 61-20-10-810-826. FAULT CODE CLEARED. OP'S TEST OF THE PROPELLER AUTOFEATHER AND UPTRIM SYSTEM GOOD. REF Q
- [SDR QXEA2022082200276](https://openairdocs.org/sdr/QXEA2022082200276.md): None · none · Aug 17, 2022 · N426QX · Bombdr DHC8402
  > #1 PROP WILL NOT UNFEATHER FOR MAINTENANCE USING THE ALT FEATHER PUMP. REPLACED THE #1 ENGINE PCU IAW AMM 61-20-11-000-801 AND 61-20-11-400-801. CHECKS GOOD 61-20-11-400-801.
- [SDR 2022FA0000355](https://openairdocs.org/sdr/2022FA0000355.md): Governor · inoperative · Jul 18, 2022 · N80 · Beech 300BEECH
  > DURING ENGINE PRE-TAKEOFF PERFORMANCE RUNS, THE #2 PROP WOULD NOT COME OUT OF FEATHER. MAINTENANCE TEAM INSPECTED THE ENGINE &PERFORMED ENGINE RUNS AND COULD NOT DUPLICATE THE DISCREPANCY. OUT CAUTION, IT WAS DECIDED TO REPLACE THE RH ENGINE PROP GOVERNOR.
- [SDR QXEA2022062700233](https://openairdocs.org/sdr/QXEA2022062700233.md): Propeller · slow · Jun 25, 2022 · N403QX · Bombdr DHC8402
  > #1 PROP VERY SLOW TO UNFEATHER TOOK AT LEAST 40-50 SEC TO COME OUT OF FEATHER. REMOVED FROM SERVICE. PERFORMED FUNCTIONAL TEST OF PROP TIME TO UNFEATHER IAW Q400 AMM 61-20-00-720-802. FUNCTIONAL TEST NORMAL. PROP UNFEATHERED WITHIN 30 SECOND LIMIT. NO FAULTS N
- [SDR QXEA2022062300229](https://openairdocs.org/sdr/QXEA2022062300229.md): Propeller · sluggish · Jun 23, 2022 · N403QX · Bombdr DHC8402
  > #1 PROPELLER IS SLOW TO UNFEATHER. REMOVED FROM SERVICE. C/W FUNCTIONAL TEST OF THE PROP TIME TO UNFEATHER PER Q400 AMM 61-20-00-720-802. UNFEATHERED IN 27 SECONDS. PROP UNFEATHER TIME GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA2022060900215](https://openairdocs.org/sdr/QXEA2022060900215.md): Powerplant · activation error · Jun 6, 2022 · N427QX · Bombdr DHC8402
  > POWERPLANT MESSAGE ON FD DURING APPROACH. REMOVED FROM SERVICE. CDS SHOWS FAULT CODE 428 A/B #1 PROP. Q HI OUTPUT FAULT. C/W FIM TASK 61-20-09-810-815. FAULT CODES CLEARED PER AMM 61-20-36-070-801. C/W AUTO FEATHER /UPTRIM TEST PER AMM 61-20-00-710-810, OPS CH
- [SDR T4OR2022082400001](https://openairdocs.org/sdr/T4OR2022082400001.md): Pitch Link · galled · Apr 4, 2022 · N350KD · Beech B300
  > NEWLY OVERHAULED PROPS, HARTZELL PN HC-B4MP-3C, ON KING AIR B300. INFLIGHT, WHEN POWER WAS REDUCED FOR LANDING, THE PROPS S/N FWA4217 AND FWA4213 WENT FLATTER THAN THE FLIGHT LOW PITCH SYSTEM, CAUSING DANGEROUS DRAG, SIGNIFICANT REDUCTION IN AIRSPEED AND ALTIT
- [SDR QXEA2022020900050](https://openairdocs.org/sdr/QXEA2022020900050.md): Pec · none · Feb 7, 2022 · N427QX · Bombdr DHC8402
  > DURING AUTO FEATHER TEST, THE A/F TEST ABORT AND A/F TEST FAILED MESSAGES APPEARED ON THE ED.REMOVED FROM SERVICE. EMU SHOWING THE FOLLOWING FAULTS: #1 PROP: 70B, #2 PROP: 70B AND 398B. COMPLIED WITH DHC-8-400 FIM TASK#'S 61-20-02-810-835 AND 61-20-08-810-818.
- [SDR QXEA2022020100045](https://openairdocs.org/sdr/QXEA2022020100045.md): Pcu · none · Jan 31, 2022 · N427QX · Bombdr DHC8402
  > ON TAKEOFF ROLL AUTOFEATHER FAILED TO ARM. ABORT INITIATED AT APPROXIMATELY 95 KIAS. ABORTED TAKE OFF. REMOVED FROM SERVICE. NO FAULTS FOUND IN CDS PER Q400 AMM 61-20-00-710-804. REMOVED AND REPLACED #2 PEC IAW Q400 AMM TASKS 61-20-36-000-801 AND 400-801. ALL
- [SDR QXEA2022013100041](https://openairdocs.org/sdr/QXEA2022013100041.md): None · none · Jan 30, 2022 · N427QX · Bombdr DHC8402
  > ABORTED TAKEOFF AT 70-80 KTS A/F FAILED TO ARM CYCLING BETWEEN AF SELECT AND AF ARM. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND ENG #1 CODE: 70A AND ENG #2 CODE: 70B AND 398B. PERFORMED TWO ENGINE STARTS AND PERFORMED THE OPS TEST OF THE AUTOFEATHER/UPT
- [SDR QXEA2021012700038](https://openairdocs.org/sdr/QXEA2021012700038.md): Pec · none · Jan 27, 2022 · N432QX · Bombdr DHC8402
  > DESCENDING THROUGH ABOUT 10,000' BOTH PILOTS FELT A ENGINE SURGE. NOTICED THE LEFT ENGINE PROP RPM FLUCTUATING. STABILIZED @ 850 RPM. NO PROBLEMS AFTER LANDED IN 850 RPM. REMOVED FROM SERVICE. CHECKED CDS. FOUND FAULT 260 A ON #1 PROP POSTED ON 27 JAN 2022, 1
- [SDR QXEA2022012400030](https://openairdocs.org/sdr/QXEA2022012400030.md): None · none · Jan 23, 2022 · N427QX · Bombdr DHC8402
  > DURING DAILY SYSTEM CHECKS THE AUTOFEATHER TEST FAILED 3 TIMES IN A ROW. REMOVED FROM SERVICE. INTERROGATED CDS, NO FAULTS LOGGED. PERFORMED OPS TEST OF THE AUTOFEATHER AND UPTRIM CHECK REF Q400 AMM TASK 61-20-00-710-810. PERFORMED MULTIPLE TIMES WITH NO FAILS
- [SDR QXEA2022011100020](https://openairdocs.org/sdr/QXEA2022011100020.md): None · none · Jan 11, 2022 · N427QX · Bombdr DHC8402
  > AUTOFEATHER SYSTEM TEST FAILED DURING DAILY SYSTEMS CHECK. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND F/C 70A, 398A, 494A/B ON BOTH PROPS, ALL RELATED TO AUTOFEATHER TEST. CLEARED F/C REF Q400 AMM 61-20-36-070-801. PERFORMED AUTOFEATHER TEST REF Q400 AMM
- [SDR LR7A2021103102988](https://openairdocs.org/sdr/LR7A2021103102988.md): Housing · fluctuates · Oct 31, 2021 · Lkheed 382G
  > DURING SCHEDULED FLIGHT #4 ENGINE RPM OUT OF LIMITS AT 96.5%. DECLARED AN EMERGENCY. / REPLACED #4 VALVE HOUSING IAW WORKCARD HN61135 LP 93125
- [SDR QXEA2021092900455](https://openairdocs.org/sdr/QXEA2021092900455.md): Seal · none · Sep 28, 2021 · N438QX · Bombdr DHC8402
  > #2 ENGINE SLOW TO COME OUT OF FEATHER. REMOVED FROM SERVICE. HAD CREW ENGINES #1 & #2. PERFORMED FUNCTIONAL TEST OF PROP TIME TO UNFEATHER IAW Q400 AMM TASK 61-20-00-720-802. ENGINE #1 WITHIN LIMIT. ENGINE #2 OUT OF LIMIT TAKING APPROX 45 SECONDS. FAILING FUNC
- [SDR QXEA2021092700449](https://openairdocs.org/sdr/QXEA2021092700449.md): Governor · malfunctioned · Sep 25, 2021 · N438QX · Bombdr DHC8402
  > AFTER START UP, WHEN CONDITION LEVERS WERE ADVANCED FROM START & FEATHER, #2 ENGINE TOOK APPROX. 1 MIN TO COME OUT OF FEATHER. REMOVED FROM SERVICE. R&R #2 ENGINE OSG, OPS TESTS NORMAL. LEAK CHECK NORMAL. NO FURTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.
- [SDR LR7A2021090902959](https://openairdocs.org/sdr/LR7A2021090902959.md): Housing · fluctuates · Sep 9, 2021 · N405LC · Lkheed 382G
  > DURING SCHEDULED FLIGHT #4 RPM FLUX OUT OF LIMITS, ENGINE SHUTDOWN, EMERGENCY DECLARED / REMOVED AND REPLACED #4 VALVE HOUSING / LOG PAGE #45997
- [SDR LR7A2021082002957](https://openairdocs.org/sdr/LR7A2021082002957.md): Housing · out of limits · Aug 19, 2021 · N402LC · Lkheed 382G44K30
  > DURING SCHEDULED FLIGHT ON TAKE OFF ROLL #1 RPM OUT OF LIMITS & FLUX / REMOVED AND REPLACED #1 VALVE HOUSING IAW HN61135 OPS CHECK GOOD PER HN7101 / LOG PAGE #46952
- [SDR 9JLA2021080425175](https://openairdocs.org/sdr/9JLA2021080425175.md): Sensor · defective · Jul 16, 2021 · N989BJ · Piagio P180
  > THE FLIGHT CREW REPORTED THAT PROPELLER SYNC FAULTED, THE CREW ADVISED, WHEN ENGAGED THE LEFT PROP WOULD SPEED-UP 25 TO 30 RPM. THE DISCREPANCY WAS DEFERRED FOR CONTINUED OPERATIONS. THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE LEFT PROP SYNCHRO PHASER
- [SDR QXEA2021062400322](https://openairdocs.org/sdr/QXEA2021062400322.md): Pec · malfunctioned · Jun 24, 2021 · N438QX · Bombdr DHC8402
  > ON ENGINE START,PROPS BROUGHT OUT OF START/ FEATHER, #2 PROP TOOK OVER 50 SECONDS TO INCREASE TO THE GREEN ARC. REMOVED FROM SERVICE. TROUBLESHOOT CDS FOUND CODE 65, PERFORMED #2 ENGINE RUN OPS TEST FAILED TO FEATHER IAW Q400 FIM 61-20-02-810-834. C/W GREASE C
- [SDR QXEA2021051600240](https://openairdocs.org/sdr/QXEA2021051600240.md): Pec · malfunctioned · May 16, 2021 · N412QX · Bombdr DHC8402
  > CLIMBING THROUGH APPROX 11,000 FT THE "POWERPLANT" MESSAGE ILLUMINATED AND REMAINED ILLUMINATED FOR THE REMAINED OF THE FLIGHT, ALL ENGINE INDICATIONS WERE NORMAL. RETURNED TO FILED, LANDING UNEVENTFUL. REMOVED FROM SERVICE. REPLACED #2 PEC. OPS CHECK NORMAL.
- [SDR QXEA2021032800149](https://openairdocs.org/sdr/QXEA2021032800149.md): Pec · malfunctioned · Mar 24, 2021 · N439QX · Bombdr DHC8402
  > WHILE TESTING A/F DURING THE DAILY SYSTEMS CHECKS, #1 ENGINE INDICATES "ABORT" AND #2 ENGINE "FAILED" TEST CONDUCTED TWICE W/ POWER LEVERS IN DISC. REMOVED FROM SERVICE. CDS REPORTED FAULT CODES 494 CH A AND CH B AND 72 CH B #2 PROP. PER Q400 FIM TASK 61-20-02
- [SDR QXEA2021032200128](https://openairdocs.org/sdr/QXEA2021032200128.md): Autofeather Sys · no test · Mar 22, 2021 · N439QX · Bombdr DHC8402
  > A/F TEST FAILS TEST, #1 ENGINE ABORT, #2 ENGINE FAILED. REMOVED FROM SERVICE. INTERROGATED CDS. FOUND FAULT 72 CH B ON # 2 ENG DISPLAY. REF Q400 FIM TASK 61-20-02-810-836. CLEARED FAULT AND C/W OPS TEST OF AUTOFEATHER & UPTRIM SYSTEM PER AMM 61-20-00-710-810.
- [SDR QXEA2021031200108](https://openairdocs.org/sdr/QXEA2021031200108.md): Power Lever · malfunctioned · Mar 10, 2021 · N446QX · Bombdr DHC8402
  > #2 PEC CAUTION DURING LANDING ROLL THROUGH 50 KTS. POWERPLANT MESSAGE ON ED. RETRIEVED FAULT CODES IAW Q400 AMM 77-31-00-710-803. HAD FAULT CODE 200 AB, 126A, AND 134 (ON #2 SIDE). REPLACED RELAY 6100-3-K2 RJB1 IAW AMM TASK 24-30-16-960-801. OPS TEST GOOD IAW
- [SDR QXEA202103090105](https://openairdocs.org/sdr/QXEA202103090105.md): Power Lever · malfunctioned · Mar 9, 2021 · N446QX · Bombdr DHC8402
  > #2 PEC CAUTION LIGHT ILLUMINATED. REQUIRES TO REPLACE THE PLA QUADRANT, AND K-3 OR K-2 RELAY WITHIN 50 FLT AFTER DISCOVERY OF THE FAULT CODE POSTING PER Q400 MCN 6610594 ISSUE NO. 2. 3/10,RETRIEVED FAULT CODES IAW Q400 AMM 77-31-00-710-803. HAD FAULT CODE 200
- [SDR QXEA2021030900105](https://openairdocs.org/sdr/QXEA2021030900105.md): Power Lever · malfunctioned · Mar 9, 2021 · N446QX · Bombdr DHC8402
  > #2 PEC CAUTION AFTER TOUCHDOWN WHILE DECELERATING THROUGH 60KTS WITH POWERPLANT MESSAGE DISPLAYED ON ED WHILE PULLING INTO THE GATE. REMOVED FROM SERVICE. INTERROGATED CDS FOUND FAULT CODE "200" IN BOTH CHANNELS. C/W Q400 FIM TASK 61-20-05-810-817 STEP 4(E). F
- [SDR LR7A2021012202773](https://openairdocs.org/sdr/LR7A2021012202773.md): Housing · failed · Jan 22, 2021 · N410LC · Lkheed 382G
  > DURING SCHEDULED FLIGHT, NR 1 ENGINE SHUTDOWN FOR OVERSPEED GREATER THAN 102.0%. ENGINE SHUTDOWN AT 1350Z. REMOVED AND REPLACED NR 1 VALVE HOUSING, IAW LAC JOB CARD HN61135. OPERATIONS CHECK NORMAL, IAW LAC JOB CARD HN7101.
- [SDR LR7A2020121302647](https://openairdocs.org/sdr/LR7A2020121302647.md): Housing · out of limits · Dec 13, 2020 · N403LC · Lkheed 382G44K30
  > DURING SCHEDULED FLIGHT, NR 2 ENGINE LOW PROP FLUX OUT OF LIMITS. ENGINE SHUT DOWN, FUEL DUMPED. REPLACED NR 2 PROP PUMP HOUSING.
- [SDR HYIA20201117001](https://openairdocs.org/sdr/HYIA20201117001.md): Governor · malfunctioned · Nov 16, 2020 · N7037E · Cessna 402C
  > THE PILOT REPORTED THE LEFT PROPELLER STUCK AT 2500 RPMS AT CRUISE FLIGHT, AND WAS UNABLE TO ADJUST. MAINTENANCE INSPECTED AND FOUND AND ALL COMPONENTS TO BE SECURED AND IN GOOD CONDITION. REMOVED THE LEFT ENGINE PROPELLER GOVERNOR AS A PRECAUTION. PREFORME
- [SDR HYIA20200904002](https://openairdocs.org/sdr/HYIA20200904002.md): Control Cable · broken · Sep 2, 2020 · N401TJ · Cessna 402C
  > THE PILOT REPORTED THAT THE RIGHT PROPELLER RAN AWAY IN FLIGHT, BUT DID NOT OVERSPEED. MAINTENANCE INSPECTED AND FOUND THAT THE PROPELLER CONTROL CABLE HAD BROKEN. REMOVED AND REPLACED RT PROPELLER CONTROL CABLE ASSEMBLY. NO FURTHER DEFECTS NOTED.
- [SDR QXEA2020062400260](https://openairdocs.org/sdr/QXEA2020062400260.md): Transducer · malfunctioned · Aug 22, 2020 · N405QX · Bombdr DHC8402
  > POWERPLANT MESSAGE ILLUMINATED ON ED DURING CLIMB @ 10'000'. RETURNED TO FIELD. LANDING UNEVENTFUL, REMOVED FROM SERVICE. FAULT CODE IN CDS IS #2 ENGINE CHAN. B, 120, 122, 134. C/W FIM TASK 61-20-03-810-817. FOUND PINS B AND E OPEN ON #2 BETA FEEDBACK TRANSDUC
- [SDR QXEA2020081000236](https://openairdocs.org/sdr/QXEA2020081000236.md): Pec · malfunctioned · Aug 10, 2020 · N400QX · Bombdr DHC8402
  > UPON C/W FUNCTIONAL TEST OF THE PEC CALIBRATION PROCEDURE PER AMM 61-20-36-720-802, NR2 PROP FAILED TO UNFEATHER PER PARA 4 A3(D). INTERROGATED CDS WITH NO FAULTS FOUND. SUCCESSFULLY PERFORMED FUNCTIONAL TEST FOR THE PEC CALIBRATION PROCEDURE IAW AMM 61-20-36
- [SDR MTNA202008210001](https://openairdocs.org/sdr/MTNA202008210001.md): O-Ring · leaking · Jul 14, 2020 · N918FX · Aerosp ATR42300
  > DURING CRUISE RT TORQUE UNCOMMENCED TORQUE INDICATED 120%, ACCOMPANIED AIRPLANE ASSEMETRY. MAINTENANCE FOUND PROPELLER CONTROL UNIT O-RING LEAKING AT REDUCTION GEAR BOX. REPLACED O-RING OPERATIONALLY CHECKS GOOD. PER PRATT & WHITNEY MM 05-50-00 OVERTORQUE W
- [SDR MTNA202008172101](https://openairdocs.org/sdr/MTNA202008172101.md): O-Ring · leaking · Jul 14, 2020 · N918FX · Aerosp ATR42300
  > DURING CRUIS, RIGHT UNCOMMANDED TORQUE INDICATED 120%, ACCOMPANIED BY AIRPLANE ASYMMETRY. REPLACED #2 PROPELLER CONTROL UNIT O-RINGS, OPERATIONALLY CHECKS GOOD. UPON FOQA DOWNLOAD FOUND OVERTORQUE TO HAVE BEEN 146%. REPLACED RH PROPELLER ASSEMBLY FOR INSPECTIO
- [SDR QXEA2020071400207](https://openairdocs.org/sdr/QXEA2020071400207.md): Unknown · malfunctioned · Jul 14, 2020 · N401QX · Bombdr DHC8402
  > AFTER ENGINE STAR FLOW A/F SELECT DID NOT ILLUMINATED ON ED. REMOVED FROM SERVICE. CYCLED A/C POWER AND FOUND FAULT 100 AT CDS C/W OPERATIONAL TEST OF PROPELLER AUTO FEATHER AND UPTRIM SYSTEM REF Q400 AMM TAK 61-20-00-710-810 SUBTASK 61-20-00-710-018 OPS CK
- [SDR QXEA2020070700201](https://openairdocs.org/sdr/QXEA2020070700201.md): Pcu · inoperative · Jul 7, 2020 · N444QX · Bombdr DHC8402
  > NR 2 PROP DID NOT COMPLETELY FEATHER DURING SHUTDOWN. REMOVED FROM SERVICE. PERFORMED FEATHER CHECK OF NR 2 ENGINE PER AMM TASK 71-00-00-868-819 AND FUNCTIONAL TEST OF NR 2 PROPELLER TIME TO UNFEATHER PER 61-20-00-720-802. NR 2 PROPELLER IS STILL NOT FULLY F
- [SDR QXEA2020070100199](https://openairdocs.org/sdr/QXEA2020070100199.md): Pec · malfunctioned · Jul 1, 2020 · N439QX · Bombdr DHC8402
  > NR 2 AUTOFEATHER FAILED TO ARM ON TAKEOFF ROLL. TAKEOFF ABORTED 80 KTS GROUNDSPEED REACHED. NO EXCESSIVE BRAKING. REMOVED FROM SERVICE. REPLACED NR 2 PEC. A/C OK FOR CONTINUED SERVICE.
- [SDR 2020FA0000537](https://openairdocs.org/sdr/2020FA0000537.md): Rod End Bearing · dry · Jun 2, 2020 · N208AR · Cessna 208B
  > PILOT REPORTS PROPELLER CONTROLS DIFFICULT TO MOVE INTO BETA. UPON FURTHER INSPECTION FOUND ENGINE CONTROL RODS NEEDED TO BE CLEANED AND LUBRICATED. ONCE LUBRICATED AIRCRAFT ENGINE RUNS PERFORMED AND NO DEFECTS WERE NOTED. AIRCRAFT OK FOR RETURN TO SERVICE.
- [SDR LR7A2020051502254](https://openairdocs.org/sdr/LR7A2020051502254.md): Housing · malfunctioned · May 13, 2020 · Lkheed 382G
  > DURING SCHEDULED FLIGHT #1 ENGINE RPM WENT TO 103%. ENGINE SHUTDOWN / REPLACED OUTBOARD VALVE HOUSING. IAW HN61135. LP 92790.
- [SDR QXEA2020022400116](https://openairdocs.org/sdr/QXEA2020022400116.md): Pec · malfunctioned · Feb 22, 2020 · N427QX · Bombdr DHC8402
  > A/F ARM FAILED ON TAKEOFF ROLL, ABORTED TAKEOFF AT 70 KNOTS. A/F SELECT ONLY. RETURNED TO GATE. REMOVED FROM SERVICE. REMOVED & REPLACED #1 PEC IAW Q400 AMM TASK 61-20-36-000/400-801. PERFORMED OPS TEST OF AUTO FEATHER AND UP TRIM SYSTEM IAW Q400 AMM TASK 61-2
- [SDR QXEA2020022000111](https://openairdocs.org/sdr/QXEA2020022000111.md): Pec · malfunctioned · Feb 19, 2020 · N427QX · Bombdr DHC8402
  > AUTOFEATHER FAILS TO TEST PROPERLY. #1 TORQUE SHOWS 100% & #2 TORQUE SHOWS 90% WHEN AUTOFEATHER TEST IS ACCOMPLISHED. POWER LEVERS ARE IN THE DISC POSITION AND AMBER FAILED MESSAGES APPEAR ON BOTH #1 & #2 ENGINES. REMOVED FROM SERVICE. REMOVED AND REPLACED #
- [SDR 2020FA0000156](https://openairdocs.org/sdr/2020FA0000156.md): Switch · failed · Feb 13, 2020 · N78BM
  > DURING AN ACCIDENT INVESTIGATION ON A VELOCITY AIRCRAFT (EXPERIMENTAL/AMATEUR BUILT) WITH A IVO PROPELLER (MAGNUM) INSTALLED, IT WAS FOUND THAT THE PITCH OF THE PROPELLER WAS AT A HIGH PITCH SETTING AFTER AN OPERATIONAL CHECK WAS COMPLETED PRIOR TO DEPARTURE.

Next page: https://openairdocs.org/jasc/6120/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 = '6120'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/6120/reports

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