# Service difficulty reports: Pratt & Whitney Canada PW121

A list on [Pratt & Whitney Canada PW121](https://openairdocs.org/engine/pratt-whitney-canada-pw121.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 9 · 444 reports

- [SDR CA190628005](https://openairdocs.org/sdr/CA190628005.md): Bolt · missing · Jun 19, 2019 · Dhav DHC8106 · Engine Mount Section
  > (CAN) DURING INSPECTION, TECHNICIANS HAD FOUND DHC8-106 SN 324 WITH THE #1 ENGINE (P/N PW121 ENGINE S/N PCE-120144 MODULE S/N TM-120144) WITH THE FORWARD ENGINE MOUNT 2 TORQUE TUBE BOLTS HAVING FALLEN OUT.THERE DOES NOT APPEAR TO BE ANY VISUAL DAMAGE AND THE C
- [SDR CA190614021](https://openairdocs.org/sdr/CA190614021.md): Frame · cracked · Jun 14, 2019 · Aerosp ATR42320 · Fuselage Main, Frame
  > (CAN) DURING CLOSE UP, A CRACK WAS FOUND ON FRAME 26, PART NUMBER S53572700200. W/O 33426718 NR 00386 ORIGINATING TASK GEN-05-00-400-0002..ATR TO SUPPLY REPAIR (TC# 20190614021)
- [SDR CA190703018](https://openairdocs.org/sdr/CA190703018.md): Fuel Heater · malfunctioned · May 15, 2019 · Dhav DHC8102 · Fuel Heater
  > (CAN) DURING INSTALL OF FUEL HEATER ON #1 ENGINE IT WAS DISCOVERED THAT THERE WAS WHAT APPEARED TO BE MEDIA BLAST (GLASS BEAD) IN THE FILTER BOWL. THE UNIT WAS FLUSHED AND A NEW FILTER WAS INSTALLED. 2 ADDITIONAL UNITS FROM THE SAME VENDOR WERE REMOVED FROM ST
- [SDR CA190206002](https://openairdocs.org/sdr/CA190206002.md): Rotor · damaged · Jan 29, 2019 · Engine (Turbine/Turboprop)
  > (CAN) TURBOMACHINE WAS RECEIVED FOR INVESTIGATION AND REPAIR AFTER THE OPERATOR REPORTED SHIFTING OF THE LP BLADES, AN OVERTORQUE EVENT THAT PEAKED AT 124.54% FOR 3 SECONDS AND METAL CONTAMINATION IN THE RGB OIL SYSTEM. DUE TO THE TIME ACCUMULATED ON THE RBB S
- [SDR CA181220002](https://openairdocs.org/sdr/CA181220002.md): Engine · power loss · Oct 24, 2018 · Dhav DHC8106 · Engine (Turbine/Turboprop)
  > (CAN) DURING DESCENT, THE FLIGHT CREW NOTICED THAT THE TORQUE INDICATION OF NO.1 ENGINE HAD DECREASED TO 0 FOOT-POUNDS, AND THE PROPELLER REVOLUTIONS PER MINUTE REMAINED IN THE PROHIBITED RANGE. THE FLIGHT CREW EVALUATED THE CONDITION AS AN ENGINE ISSUE WITHOU
- [SDR CA180827006](https://openairdocs.org/sdr/CA180827006.md): Engine · malfunctioned · Aug 14, 2018 · Engine (Turbine/Turboprop)
  > (CAN) ON TAKE-OFF, THE #2 ENGINE ITT REACHED 816 DEGREES TRIGGERING A WARNING LIGHT. CREW IMMEDIATELY REDUCED POWER ON THE #2 ENGINE TO APPROXIMATELY 80% TORQUE TO EXTINGUISH THE WARNING LIGHT AND REDUCE ITT. MOMENTS LATER, STILL ON CLIMB OUT, MASTER WARNING L
- [SDR 7C7A2017080100333](https://openairdocs.org/sdr/7C7A2017080100333.md): Engine · damaged · Aug 1, 2017 · N893EA · Dhav DHC8106 · Engine (Turbine/Turboprop)
  > CABIN OCCUPANTS AND FA COMPLAINED OF ACRID FUMES DURING DESECENT. FLIGHT CREW DID DETECT A SLIGHT ODOR THE COCKPIT. NR 1 ENGINE CHANGED DUE TO CAT C DAMAGE.
- [SDR 7C7A2017051900328](https://openairdocs.org/sdr/7C7A2017051900328.md): Hmu · defective · Apr 30, 2017 · N893EA · Dhav DHC8106 · Fuel Controlling System
  > NR 1 ENGINE EXPERIENCED A LOSS OF POWER DURING ECU SELECTION FROM TOP TO NORMAL, ALSO WHEN IN TOP AND REDUCING POWER. LEVER ANGLE POWER REDUCED AS IF THE ENGINE WAS IN MANUAL. NO MANUAL. NO MANUAL CAUTION LIGHT ILLUMINATION. REMOVED AND REPLACED THE NR 1 E
- [SDR 7C7A2016091900254](https://openairdocs.org/sdr/7C7A2016091900254.md): Line · leaking · Sep 19, 2016 · N887EA · Dhav DHC8106 · Propeller Controlling System
  > NR 1 ENGINE SHOWS SIGNS OF LEAKING FROM UNIT SPLIT LINE. REMOVED AND REPLACED PCU AND ADAPTOR SEALS. IAW CMM 61-22-00.
- [SDR 7C7A2016091900255](https://openairdocs.org/sdr/7C7A2016091900255.md): Seal · leaking · Sep 19, 2016 · N887EA · Dhav DHC8106 · Propeller Controlling System
  > NR 2 ENGINE OIL PRESSURE WARNING ILLUMINATED. GAUGE INDICATED 50 PSI. ACCOMPOSHED LOW OIL PRESSURE QRH CHECKLIST. OIL PRESSURE INCREASED SLIGHTLY AND WARNING LIGHT WENT OUT AFTER APPROXIMATELY 3 MINUTES. NR 2 ENGINE OIL PRESSURE WARNING LIGHT CAME ON AGAIN.
- [SDR 7C7A2016090600253](https://openairdocs.org/sdr/7C7A2016090600253.md): Seal · failed · Sep 6, 2016 · N891EA · Dhav DHC8106 · Propeller Controlling System
  > SHUT DOWN NR 1 ENGINE DUE TO LOW OIL PRESSURE, DETERMINED LEAK AT PROP SHAFT SEAL.
- [SDR CA160316001](https://openairdocs.org/sdr/CA160316001.md): Stator · damaged · Mar 14, 2016 · Engine (Turbine/Turboprop)
  > (CAN) ENGINE WAS RECEIVED FOR INVESTIGATION AND REPAIR AFTER THE OPERATOR REPORTED A DENT ON THE T/E OF AN LP BLADE AIRFOIL. DUE TO THE TIME ACCUMULATED BY THE HOT SECTION SINCE O/H, THE OPERATOR ELECTED TO PERFORM AN HSI AT THIS VISIT. THE OPERATOR ALSO ELE
- [SDR 7C7A20151123097](https://openairdocs.org/sdr/7C7A20151123097.md): Oil Cooler · leaking · Nov 21, 2015 · N885EA · Dhav DHC8106 · Engine Oil Cooler
  > APPROX 1 HR INTO THE FLIGHT, THE MASTER WARNING LT INTERMITTENTLY FLASHED. A COUPLE MINUTES LATER WE NOTICED NR 1 ENG OIL PRESS FLUCTUATIONS, 60-45 APPROX, WE FEATHERED THE ENG & THIS HELPS THE FLUCTUATIONS. WE HAD A MOMENTARILY NR 1 ENG OIL PRESS LT BUT IT
- [SDR CA151117016](https://openairdocs.org/sdr/CA151117016.md): Garlock Seal · leaking · Nov 7, 2015 · Aerosp ATR42300 · Turbine Engine Oil System
  > (CAN) WHILE IN CRUISE, THE NR 1 ENGINE BEGAN LOSING OIL PRESSURE. THE CREW CONDUCTED A PRECAUTIONARY SHUTDOWN AND CONTINUED ON TO THEIR DESTINATION WHERE IT LANDED SINGLE ENGINE SAFELY. POST FLIGHT INSPECTION FOUND A LEAKING GARLOCK SEAL AT THE STARTER GENER
- [SDR CA151020004](https://openairdocs.org/sdr/CA151020004.md): Actuator · leaking · Oct 17, 2015 · Dhav DHC8106 · Landing Gear Door Actuator
  > (CAN) FOUND DURING MAINTENANCE GROUND RUNS NLG DOOR ACTUATOR LEAKING FROM ACTUATOR HOUSING. REPLACED NLG DOOR ACTUATOR.
- [SDR CA151020005](https://openairdocs.org/sdr/CA151020005.md): Manifold · bypassing · Oct 17, 2015 · Dhav DHC8106 · Hydraulic System, Main
  > (CAN) WHILE PERFORMING MAINTENANCE USING GROUND HYDRAULIC CART, FOUND THAT THE HYDRAULIC GROUND CART DRIVES THE NR 2 SPU SUSPECT INTERNAL CHECK VALVE U/S IN THE NR 2 HYDRAULIC PRESSURE MANIFOLD. REPLACED NR 2 HYDRAULIC PRESSURE MANIFOLD ASSEMBLY.
- [SDR CA151013007](https://openairdocs.org/sdr/CA151013007.md): Engine · fire · Oct 13, 2015 · Dhav DHC8103 · Engine (Turbine/Turboprop)
  > (CAN) IT HAS BEEN REPORTED THAT THE CREW WERE PRESENTED WITH A NR 2 ENGINE FIRE DURING LANDING. THE CREW STOPPED THE ACFT ON RUNWAY AND ACTIVATED THE ENGINE FIRE EXTINGUISHER BOTTLE. MECHANICS ADVISE IT LOOKED LIKE A POSSIBLE OIL FIRE.
- [SDR CA151029002](https://openairdocs.org/sdr/CA151029002.md): Bearing · failed · Oct 13, 2015 · Dhav DHC8103 · Engine (Turbine/Turboprop)
  > (CAN) DURING LANDING, A FIRE WARNING SOUNDED IN THE COCKPIT. THE PILOT DISCHARGED BOTH FIRE BOTTLES AND THE FIRE WARNING WENT OUT. GROUND INSPECTION REVEALED THAT NR 6 AND 7 BEARING EXTERNAL AREA SHOWED EVIDENCE OF FIRE AND WET OIL. THE TURBOMACHINE CHIP D
- [SDR CA151014008](https://openairdocs.org/sdr/CA151014008.md): Control Valve · unserviceable · Oct 10, 2015 · Dhav DHC8102 · Engine Oil Cooler
  > (CAN) SHORTLY AFTER DEPARTURE THE FLIGHT CREW NOTED AN ABNORMAL INCREASE IN THE NR 1 ENGINE OIL TEMPERATURE INTO THE YELLOW RANGE, APPROACHING THE RED LINE. THE ACFT RETURNED TO BASE AND AN INSPECTION BY MAINTENANCE DETERMINED THAT THE CAUSE WAS A DEFECTIVE TE
- [SDR CA151216003](https://openairdocs.org/sdr/CA151216003.md): Engine · malfunctioned · Oct 3, 2015 · Dhav DHC8102 · Engine (Turbine/Turboprop)
  > (CAN) WHILE TURNING INTO FINAL, AN UNCOMMANDED IFSD OCCURRED ON THE NR 1 ENGINE. THE CREW REPORTED ONLY SEEING CAUTION LIGHTS ON THE ANNUNCIATOR PANEL AND A LOW OIL PRESSURE WARNING. THE F/O ALSO REPORTED SEEING AN AMBER LIGHT ON THE ENGINE TEMPERATURE INDICA
- [SDR CA151215015](https://openairdocs.org/sdr/CA151215015.md): Seal · leaking · Sep 29, 2015 · Aerosp ATR42320 · Starter-Generator
  > (CAN) DURING A FERRY FLIGHT WHILE IN CRUISE, THE LOW OIL PRESSURE WARNING LIGHT FOR THE RT ENGINE CAME ON. AFTER FOLLOWING THE FLIGHT MANUAL PROCEDURES THE PILOT SHUT DOWN THE ENGINE AND LANDED WITHOUT FURTHER PROBLEM. POST FLIGHT INSPECTION REVEALED EXTERNA
- [SDR CA150928005](https://openairdocs.org/sdr/CA150928005.md): Bearing · damaged · Sep 25, 2015 · Aerosp ATR42320 · Propeller Hub Section
  > (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 HYIA20150904001](https://openairdocs.org/sdr/HYIA20150904001.md): Ecu · inoperative · Aug 27, 2015 · N14834 · Aerosp ATR42320 · Fuel Control/Turbine Engines
  > AFTER GO AROUND, ECU 1 FAULTED. ECU 1 WAS TURNED OFF IAW QRH. ON BASE TO FINAL, LT TORQUE WENT TO 100% & LT NP WENT INTO CAUTION, NR 1 ECU. CLEANED CONNECTOR, PERFORMED ENG RUN-UP & FOUND TO BE OK IAW MM JIC 73-23-61 RAI 10000. AFTER INITIAL DISCREPANCY C
- [SDR CA150901007](https://openairdocs.org/sdr/CA150901007.md): Engine · power loss · Aug 25, 2015 · Dhav DHC8* · Engine (Turbine/Turboprop)
  > (CAN) LOSS OF NR 2 ENGINE POWER OCCURRED DURING APPROACH AND THE TORQUE INDICATION SHOWS 3 %. THE AIRCRAFT PERFORMED AND UNEVENTFUL LANDING. IT WAS FOUND THAT A TUBE WAS BROKEN AT CONNECTION TO HMU. THE TUBE WILL BE REPLACED.
- [SDR CA150814001](https://openairdocs.org/sdr/CA150814001.md): Cover · broken · Aug 14, 2015 · Engine (Turbine/Turboprop)
  > (CAN) ENGINE WAS SENT TO O/H SHOP FOR A HOT SECTION INSPECTION. THE OPERATOR ALSO REPORTED THAT THE LP ROTOR WOULD NOT ROTATE. DISASSEMBLY OF THE HOT SECTION REVEALED THAT THE LP STATOR BAFFLE ASSY WAS LOOSE AND THE NR 5 BEARING COVER WAS BROKEN.
- [SDR CA150814009](https://openairdocs.org/sdr/CA150814009.md): Engine · power loss · Aug 13, 2015 · Dhav DHC8102 · Engine (Turbine/Turboprop)
  > (CAN) AIRCRAFT EXPERIENCED AN INFLIGHT POWER LOSS ON THE NR 2 ENGINE WHILE ON ROUTE, AND DIVERTED TO ALTERNATE. THE FLIGHT CREW HEARD AN ABNORMAL NOISE FROM THE ENGINE, ACCOMPANIED BY A YAW AND LOSS OF TORQUE. THE ENGINE WAS SHUT DOWN AND FEATHERED, AND THE AI
- [SDR CA150818003](https://openairdocs.org/sdr/CA150818003.md): Engine · malfunctioned · Aug 8, 2015 · Dhav DHC8103 · Engine (Turbine/Turboprop)
  > (CAN) DURING CLIMB (ENGINE RPM SET TO1050), THE CREW EXPERIENCED HIGH TORQUE ON NR 2 ENGINE ABOVE FLIGHT LEVEL 180. NR 2 ENGINE WAS SHUTDOWN AND RETURNED TO LAND ACCORDING TO COMPANY PROCEDURE.
- [SDR CA150729006](https://openairdocs.org/sdr/CA150729006.md): Connector · shorted · Jul 27, 2015 · Dhav DHC8106 · Equipment/Furnishings Wiring
  > (CAN) THE CAPTAIN REPORTS THAT ON THE APPROACH THERE WAS A STRONG SMELL (ELECTRICAL) APPEARED IN THE FLIGHT DECK AT THE SAME TIME THE FLIGHT ATTENDANT CALLED TO ADVISE THAT THERE WAS BURN SMELL THE OVEN AND THAT SHE TURNED IT OFF. HE CHECKED THE OVEN CIRCUIT B
- [SDR CA150727010](https://openairdocs.org/sdr/CA150727010.md): Blade · fractured · Jul 17, 2015 · Dhav DHC8301 · Turbine Section
  > (CAN) PILOT REPORTED VIBRATION IN FLIGHT WITH STRANGE RATTLING SOUND AND VIBRATION IN CONDITION LEVER ON NR 2 ENGINE. AFTER AND ADDITIONAL GROUND RUNS AND INVESTIGATION, ONE PT BLADE WAS FOUND FRACTURED.
- [SDR CA150715006](https://openairdocs.org/sdr/CA150715006.md): Gearbox · damaged · Jul 15, 2015 · Turbine Engine Reduction Gear
  > (CAN) ENGINE WAS SENT FOR HSI AND BORESCOPE INSPECTION OF UNACCESSED AREAS. BORESCOPE INSPECTION, CATEGORY 4 DAMAGE ON THE 1ST STAGE GEAR TRAIN AND CATEGORY 1, DAMAGE ON THE HP IMPELLER.
- [SDR CA150727008](https://openairdocs.org/sdr/CA150727008.md): Engine · overtemp · Jul 13, 2015 · Aerosp ATR42300 · Engine (Turbine/Turboprop)
  > (CAN) DURING CLIMB, PILOT NOTICED ITT ON THE NR 2 ENGINE REACHING 850 DEGREES. CREW ELECTED TO REDUCE POWER ON THE NR 2 ENGINE AND RETURN TO POINT OF ORIGIN. ACFT LANDED SAFELY WITHOUT INCIDENT. POST FLIGHT TROUBLESHOOTING OF THE ITT SYS IS ONGOING. CUSTOM
- [SDR CA150602013](https://openairdocs.org/sdr/CA150602013.md): Blade · distressed · May 14, 2015 · Aerosp ATR42320 · Turbine Section
  > (CAN) PILOT INDUCED IFSD DUE TO LOW OIL PRESSURE & SUBSEQUENT FIRE ALARM. AN UNEVENTFUL LANDING WAS MADE. GROUND INSPECTION SHOWED PT BLADE DISTRESS.
- [SDR CA150701006](https://openairdocs.org/sdr/CA150701006.md): Hmu · malfunctioned · May 10, 2015 · Dhav DHC8103 · Fuel Control/Turbine Engines
  > (CAN) COMMANDED ENG SHUTDOWN DUE TO NO ENG RESPONSE DURING TEST FLIGHT FOLLOWING 80K CHECKS. HMU WAS REPLACED & THE ACFT RETURNED TO SERVICE. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE & PROVIDE INFORMATION THROUGH SUBSEQUENT SERVICE DIFFICULTY REVIEW MEET
- [SDR CA150429002](https://openairdocs.org/sdr/CA150429002.md): Holder · overheated · Apr 27, 2015 · Dhav DHC8106 · Passenger Compartment Lighting
  > (CAN) DURING FLIGHT, CREW SMELLED & SEEN SMOKE IN CABIN, ELECTRICAL. THEY NOTICE IT WAS COMING FROM THE LT CABIN LIGHTING. THEY PUT O2 MASK & FIRED A FIRE EXTINGUISHER ON THE LIGHT. THE PLANE DIVERT TO NEAREST AIRPORT & LANDED SAFELY. INSPECTION REVEALED T
- [SDR CA150701005](https://openairdocs.org/sdr/CA150701005.md): Hmu · malfunctioned · Apr 25, 2015 · Dhav DHC8103 · Fuel Control/Turbine Engines
  > (CAN) COMMANDED ENG SHUTDOWN DUE TO NO ENG RESPONSE DURING TEST FLIGHT FOLLOWING 80K CHECKS. HMU WAS REPLACED & THE ACFT RETURNED TO SERVICE. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE & PROVIDE INFORMATION THROUGH SUBSEQUENT SERVICE DIFFICULTY REVIEW MEET
- [SDR CA150427016](https://openairdocs.org/sdr/CA150427016.md): Pump · clogged · Apr 20, 2015 · Aerosp ATR42320 · Fuel Boost Pump
  > (CAN) FOLLOWING AN ENG REPLACEMENT ON THIS AIRFRAME, THE NEWLY INSTALLED ENG FLAMED OUT ON SEVERAL OCCASIONS DURING POST INSTALLATION MX GND RUN UP. THESE FLAME OUTS OCCURRED FOLLOWING TESTS AT HIGH POWER SETTINGS. THE AIRFRAME FUEL FEEDER TANK MAGNETIC INDI
- [SDR 7C7A201504100021](https://openairdocs.org/sdr/7C7A201504100021.md): Eec · defective · Apr 7, 2015 · N880EA · Dhav DHC8106 · Fuel Control/Turbine Engines
  > NR 1 ENGINE SHUTDOWN. TORQUE FLUCTUATIONS +/- 20% WITH NR 1 ENGINE MANUAL CAUTION LIGHT GOING ON AND OFF. NR 1 ENGINE EEC REMOVED AND REPLACED, GROUND RUN OPS CHECKED GOOD IAW PSM 1-8-2ER TABLE 5-1
- [SDR CA150302013](https://openairdocs.org/sdr/CA150302013.md): Actuator · cracked · Mar 2, 2015 · Dhav DHC8106 · Aileron Control System
  > (CAN) THE LT OTBD ROLL SPOILER ACTUATOR VALVE BODY CRACKED AND CAUSED HYDRAULIC FLUID LOSS IN SYSTEM NR 2 IN FLIGHT.
- [SDR CA150226001](https://openairdocs.org/sdr/CA150226001.md): Blade · cracked · Feb 26, 2015 · Turbine Section
  > (CAN) DURING ROUTINE BORESCOPE THE OPERATOR NOTICED A CRACK ALONG THE TE OF AN LP BLADE. THE ENG WAS REMOVED & SENT FOR HSI & INVESTIGATION OF THE CRACKED BLADE. UPON DISASSEMBLY OF THE ENG THE DAMAGE TO THE LP STATOR WAS NOTED. SEE ATTACHED EIR PW100 2015-
- [SDR CA150224015](https://openairdocs.org/sdr/CA150224015.md): Gearbox · failed · Feb 18, 2015 · Aerosp ATR42320 · Accessory Gearboxes
  > (CAN) THE CREW EXPERIENCED A LOW OIL PRESSURE IN FLIGHT ON THE NR 2 ENGINE. THE CREW SHUT THE ENGINE DOWN. THE ACFT LANDED UNEVENTFULLY. AFTER LANDING, THE TEAM ON SITE DETERMINED THE CAUSE TO BE OIL LEAKING FROM THE SEAL BETWEEN THE GEARBOX AND THE OVERSPEE
- [SDR CA150224028](https://openairdocs.org/sdr/CA150224028.md): Bulb · shorted · Feb 12, 2015 · Aerosp ATR42320 · Passenger Compartment Lighting
  > (CAN) SMALL AMOUNT OF SMOKE NOTED EMITTING FROM READING LIGHT IN SEATS 5A/B IN FLIGHT, AIRCRAFT RETURNED TO BASE AND BULB WAS REPLACED RECTIFYING THE DEFECT. SMS INVESTIGATION LEAD TO THE SUSPICION THAT THE BULB WAS AN UNAPPROVED OR COUNTERFEIT PART (PICTURES
- [SDR CA150212001](https://openairdocs.org/sdr/CA150212001.md): Blade · fractured · Feb 11, 2015 · Turbine Section
  > (CAN) A ROUGH NOISE WAS HEARD FROM ENGINE ON SHUT-DOWN. START-UP TO TAXI A WHINING NOISE WAS HEARD FROM THE ENGINE AND THE CONDITION LEVEL WAS VIBRATING. ENGINE WAS SHUT DOWN AND A VISUAL INSPECTION OF THE ENGINE REVEALED A FRACTURED POWER TURBINE BLADE.
- [SDR CA141202035](https://openairdocs.org/sdr/CA141202035.md): Fitting · cracked · Nov 29, 2014 · Aerosp ATR42320 · Fuselage, Landing Gear Attach Fittings
  > (CAN) DURING RT MLG ACTURATOR REPLACEMENT IT WAS OBSERVED THAT THE BOTTOM 2 ATTACHMENT HOLES OF ACTURATOR FITTING WERE CRACKED.
- [SDR CA141203004](https://openairdocs.org/sdr/CA141203004.md): Strut · damaged · Nov 29, 2014 · Dhav DHC8106 · Main Landing Gear Strut/Axle/Truck
  > (CAN) AIRCRAFT LANDING, DIFFICULTY TO CONTROL ON LANDING, DO TO WEIGHT ON WHEELS STAY ON AFTER LANDING. AFTER INSPECTION PILOT FOUND OUT THAT THE LT MLG SHOCK STRUT NEVER COMPRESSED AND HAS REMAINED FULLY EXTENDED EVEN AFTER TAXIING FOR COUPLE MINUTES WITH TH
- [SDR CA141128006](https://openairdocs.org/sdr/CA141128006.md): Wire · burned · Nov 25, 2014 · Aerosp ATR42320 · Light System Wiring
  > (CAN) CABIN READING LIGHTS LT BANK AND CABIN LATERIAL LIGHTS NOT WORKING - CAUSE 115VAC SERVICE BUS AND 28 VDC GROUND HANDLING BUS WIRES SHORTED TO GROUND AND EACH OTHER CAUSING BURNT WIRES AT FRAME 20 L/H BEHIND OVERHEAD BIN BETWEEN 71VC AND 751VT, THE CAUSE
- [SDR CA141027006](https://openairdocs.org/sdr/CA141027006.md): Engine · unknown · Oct 17, 2014 · Aerosp ATR42320 · Engine (Turbine/Turboprop)
  > (CAN) DURING CLIMB OPERATION, THE CREW REPORTED OIL ODOR IN THE CABIN. THE ENGINE CONTINUED WITHOUT REPORTED OPS ISSUE TO AIRPORT AND LANDED UNEVENTFULLY. VISUAL INSPECTION REVEALED OIL ON LP IMPELLER AND THE PROPELLER DIFFICULT TO ROTATE AFTER SEVERAL HOURS
- [SDR CA141014015](https://openairdocs.org/sdr/CA141014015.md): Oil System · leaking · Oct 13, 2014 · Aerosp ATR42300 · Turbine Engine Oil System
  > (CAN) CREWS EXPERIENCED FUMES IN THE CABIN, AN INTERNAL OIL LEAK WAS FOUND BETWEEN INLET CASING AND 1ST STAGE COMPRESSOR OF RT ENGINE. ENGINE SLATED FOR REMOVAL.
- [SDR CA141024011](https://openairdocs.org/sdr/CA141024011.md): Wire · loose · Oct 4, 2014 · Dhav DHC8103 · Engine Indicating System Wiring
  > (CAN) ACFT MADE AN AIR TURNBACK DUE TO NR 2 ENGINE ITT FLUCTUATION BETWEEN 600 TO 700 DEGREES DURING CLIMB. GROUND INSPECTION FOUND A LOOSE NUT ON THE TERMINAL WITH T6 WIRING HARNESS AT FLANGE "K". THE BOLT WAS RE-TORQUED AND ACFT RETURNED TO SERVICE.
- [SDR CA140929002](https://openairdocs.org/sdr/CA140929002.md): Wheel · departed · Sep 26, 2014 · Aerosp ATR42320 · Wheel/Ski/Float
  > (CAN) AFTER LANDING, ON WALKAROUND CREW NOTICED LT O/B MAIN WHEEL MISSING. TAKEOFF AND LANDING WAS NORMAL. MAINTENANCE RECOVERED THE WHEEL AT THE TAKEOFF LOCATION. THE LOCKING BOLTS AND THE BEARING WERE FOUND BROKEN.
- [SDR CA140925005](https://openairdocs.org/sdr/CA140925005.md): Control Unit · failed · Sep 22, 2014 · Dhav DHC8102 · Interphone/Passenger Announcement (PA) System
  > (CAN) WHILE ENROUTE, THE FLIGHT CREW NOTICED AN ODOR LIKE PLASTIC MELTING. THE FLIGHT CREW AND F/A LOCATED THE SOURCE OF THE ODOR TO BE THE ATTENDANT PA CONTROL PANEL. THE PILOT PULLED THE RELATED CIRCUIT BREAKER FOR THE PA SYS AND THE ODOR WENT AWAY. WHEN T

Next page: https://openairdocs.org/engine/pratt-whitney-canada-pw121/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 engine_model_key = 'PW121'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/pratt-whitney-canada-pw121/reports

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