# Service difficulty reports: Dehavilland DHC-8-400

A list on [Dehavilland DHC-8-400](https://openairdocs.org/model/dehavilland-dhc-8-400.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 37 · 1,806 reports

- [SDR 2023FA0000078](https://openairdocs.org/sdr/2023FA0000078.md): Wire Splice · failed · Feb 8, 2023 · N881WM · Bombdr DHC8400 · Doors
  > DURING A SCHEDULED FLIGHT FROM PHL TO YTZ, FUSELAGE DOOR WARNING LIGHT ILLUMINATED UPON REACHING FL240. DOORS PAGE SHOWED IT TO BE THE AFT BAGGAGE DOOR. PRESSURIZATION REMAINED NORMAL. AIRCRAFT RETURNED TO PHL.
- [SDR WMAA202301120028](https://openairdocs.org/sdr/WMAA202301120028.md): Warning Message · illuminated · Jan 10, 2023 · N881WM · Bombdr DHC8400 · Door Warning System
  > DURING FLIGHT FROM PHL TO YTZ, FUSELAGE DOOR WARNING LIGHT ILLUMINATED UPON REACHING FL240. DOORS PAGE SHOWED IT TO BE (AFT) BAGGAGE DOOR. PRESSURIZATION REMAINED NORMAL. AIRCRAFT TURNED AROUND AND RETURNED TO PHL. INTERMITTENT FROM STEADY RED TO GREEN AGAIN
- [SDR WMAA202212230001](https://openairdocs.org/sdr/WMAA202212230001.md): Warning Message · illuminated · Dec 20, 2022 · N881WM · Bombdr DHC8400 · Cargo/Baggage Doors
  > DURING FLIGHT FROM PHL TO BOS, FUSELAGE DOOR WARNING SYSTEM ILLUMINATED. MFD DOORS PAGE SHOWED AFT BAGGAGE DOOR AS NOT FULLY STOWED. PRESSURIZATION CHECKED NORMAL IAW PILOT'S QRH AND MANUALS. FLIGHT TURNED AROUND AND RETURNED TO PHL.
- [SDR QXEA2020091400282](https://openairdocs.org/sdr/QXEA2020091400282.md): Door · out of adjust · Sep 10, 2020 · N412QX · Bombdr DHC8400 · Passenger/Crew Doors
  > MAIN CABIN DOOR CATCHING ON TRIGGER LOCK ROLLER. REMOVED FROM SERVICE. FERRIED FOR REPAIRS. REMOVED MCD REF Q400 AMM 52-11-00-000-801, SHIMMED LAYSHAFT AND REINSTALLED MCD REF Q400 AMM 52-11-00-400-801. RETURNED TO SERVICE.
- [SDR CA190814014](https://openairdocs.org/sdr/CA190814014.md): Bearing · failed · Aug 7, 2019 · Bombdr DHC8400 · Wheel/Ski/Float
  > (CAN) #1 MAIN WHEEL INBD BEAIRNG FOUND FAILED WHILE TROUBLESHOOTING AN ANTI-SKID FAILURE MAIN WHEEL, AXLE AND BRAKE UNIT REPLACED, BRAKE AND ANTI SKID FUNCTION CHECKS CARRIED OUT, A/C RTS (TC# 20190814014)
- [SDR CA190812019](https://openairdocs.org/sdr/CA190812019.md): Pump · damaged · Aug 7, 2019 · Bombdr DHC8400 · Hydraulic Pump (Electric/Engine), Main
  > (CAN) ON 07-AUG-2019, AFTER TAKE-OFF, THE FLIGHT CREW NOTICED THE #1 HYDRAULIC QUANTITY GO DOWN TO 25% AND THEN FURTHER DECREASE TO 20%. THE FLIGHT CREW DECLARED A PAN PAN CALL AND DIVERTED TO AN ALTERNATE DESTINATION. THE AIRCRAFT LANDED SAFELY WITHOUT ANY FU
- [SDR CA190828008](https://openairdocs.org/sdr/CA190828008.md): Hose · pinched · Aug 6, 2019 · Bombdr DHC8400 · Crew Oxygen System
  > (CAN) DURING POST TRAINING CHECK FOUND EMERGENCY OXYGEN LINE ON CO-PILOT SIDE PINCHED BETWEEN CO-PILOT SEAT BOTTOM STRUCTURE AND SEAT PAN RENDERING THE OXYGEN MASK INOPERATIVE DUE TO THE BLOCKED LINE. WHEN SEAT IS IN THE UP POSITION THE LINE IS CAUGHT ON THE L
- [SDR CA190813023](https://openairdocs.org/sdr/CA190813023.md): Spring · broken · Aug 6, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) RH MLG DOOR AMBER LIGHT AND UNSAFE LIGHTS REMAINED ILLUMINATED AFTER LDG RETRACTION. ALTERNATE EXTENSION PERFORMED AND GEAR EXTENDED NORMALLY, AIRCRAFT LANDED SAFELY.TROUBLESHOOTING FOUND UPLOCK SPRING BROKEN. UPLOCK ASSEMBLY REPLACED, AIRCRAFT RTS. (T
- [SDR CA190806008](https://openairdocs.org/sdr/CA190806008.md): Tube · chafed · Aug 6, 2019 · Bombdr DHC8400 · Aircraft Fuel Distribution System
  > (CAN) DURING OPEN UP TO ACCOMPLISH SB84-28-21 MAINTENANCE FOUND TWO FUEL TUBES (ONE FROM THE SCAVENGE SYSTEM AND ONE FROM THE ENGINE FUEL FEED SYSTEM) IN THE L/H TANK NEAR PANEL 522CT CHAFING TOGETHER. IT WAS DISCOVERED THAT THIS WAS CAUSED BY AND IMPROPERLY A
- [SDR CA190808008](https://openairdocs.org/sdr/CA190808008.md): Trim Switch · worn · Aug 6, 2019 · Bombdr DHC8400 · Rudder Tab Control System
  > (CAN) AIRCRAFT EXPERIENCED AN ATB DUE TO UNCOMMANDED RUDDER TRIM MOVEMENT AT CLIMB PHASE. THE RUDDER TRIM ACTUATOR MOVED TO LEFT SIDE IN SPITE OF THE RUDDER TRIM SWITCH WAS IN NEUTRAL POSITION. FLIGHT CREWS PERFORMED AILERON RUDDER RUNAWAY IN QRH, BUT THE RUDD
- [SDR CA190830003](https://openairdocs.org/sdr/CA190830003.md): Sensor · damaged · Aug 5, 2019 · Bombdr DHC8400 · Landing Gear Position and Warning
  > (CAN) NOSE GEAR DOOR AMBER AFTER GEAR UP LDG INOP LIGHT ILLUMINATED - ALTERNATE EXTENSION CARRIED OUT. MAINTENANCE FOUND THE NLG DOOR CLOSED SENSOR DAMAGED RESULTING IN AN OPEN CIRCUIT, DOOE SENSOR REPLACED, FUNCTION CHECKS CARRIED A/C RTS (TC# 20190830003)
- [SDR CA190819001](https://openairdocs.org/sdr/CA190819001.md): Control Unit · faulted · Aug 4, 2019 · Bombdr DHC8400 · Landing Gear Steering System
  > (CAN) NOSEWHEEL STEERING CAUTION LIGHT ILLUMINATED DURING CLIMB. NO EMERGENCY DECLARED AND ALTERNATE EXTENSION WAS NOT USED. MAINTENANCE CHECKED RVDT & REPLACED THE SCU. THE NEXT DAY THE FLT CREW REPORTED THE NOSE WHEEL STEERING WAS TURNING TO THE RIGHT DURING
- [SDR CA190807010](https://openairdocs.org/sdr/CA190807010.md): Cable · broken · Aug 4, 2019 · Bombdr DHC8400 · Landing Gear Door Retract Section
  > (CAN) WHILE ATTEMPTING TO OPEN THE MLG DOOR TO CONDUCT A SERVICING TASK, MTC NOTED THAT THE GEAR DOOR DID NOT OPEN WHEN THE ALT RELEASE WAS PULL, THEY FURTHER LOOK INTO THE LH NACELLE AND NOTED A CABLE HANGING FROM THE NACELLE. THE LEVER ASSEMBLY HAD BROKE ON
- [SDR CA190807001](https://openairdocs.org/sdr/CA190807001.md): Bolt · missing · Aug 3, 2019 · Bombdr DHC8400 · Propeller Feathering/Reversing
  > (CAN) PILOT REJECTED T.O DUE TO #1 LOW OIL PRESSURE INDICATION. MAINTENANCE FOUND OIL LEAK FORM THE #1 ENGINE, SPECIFICALLY FROM THE FEATHERING PUMP. OIL PUMP COVER WAS MISSING A BOLT CAUSE THE OIL LEAK. (TC# 20190807001)
- [SDR CA190807015](https://openairdocs.org/sdr/CA190807015.md): Bearing · failed · Aug 3, 2019 · Bombdr DHC8400 · Wheel/Ski/Float
  > (CAN) RTO EVENT DUE TO OUTBD ANTISKID C/L ILLUMINATION. AFTER THE AIRCRAFT RETURNED TO THE GATE, MECHANIC FOUND #4 MAIN WHEEL BEARING FAILURE CONDITION. MAIN WHEEL, AXLE AND BRAKE UNIT REPLACED, A/C RTS (TC# 20190807015)
- [SDR CA190828007](https://openairdocs.org/sdr/CA190828007.md): Pseu · inoperative · Aug 3, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) UPON RETRACTING LANDING GEAR AFTER TAKE OFF THE LANDING GEAR HANDLE LIGHTS REMAINED ILLUMINATED APPROX 30 SECONDS LATER LANDING GEAR INOP CAUTION LIGHT ILLUMINATED. ALT LANDING GEAR EXTENSION PERFORMED. MAINTENANCE REPLACED THE PSEU, FUNCTION TESTS CARR
- [SDR CA190826022](https://openairdocs.org/sdr/CA190826022.md): Control Handle · inoperative · Aug 2, 2019 · Bombdr DHC8400 · Landing Gear Selector
  > (CAN) ATB DUE TO UNABLE TO RETRACT ALL LANDING GEARS JUST AFTER TAKEOFF, THREE RED GEAR UNSAFE/ON TRANSIT LIGHT ILLUMINATED, ALSO THE DRAG NOISE WHEN THE GEAR WAS DOWN WAS STILL THEIR.SO WE ENTERED A HOLD. PERFORMED AN ALTERNATE EXTENSION - GOT THREE GREENS.
- [SDR CA190802012](https://openairdocs.org/sdr/CA190802012.md): Pressure Switch · failed · Aug 2, 2019 · Bombdr DHC8400 · Trailing Edge Flap Control System
  > (CAN) DEFECT: ON FINAL APPROACH FLAP WAS SELECTED TO 10 DEGREE. THE FLAP POWER CAUTION LIGHT CAME ON, MISSED APPROACH WAS EXCECUTED BUT FLAPS STAYED AT 5 DEGREE, FLAPS WERE OVERSPEED 2.5 KNOTS, QRA WAS EXECUTED WITH THE CB RESET. UPON RESET THE CAUTION LIGHT E
- [SDR CA190807014](https://openairdocs.org/sdr/CA190807014.md): Warning Message · illuminated · Aug 1, 2019 · Bombdr DHC8400 · Trailing Edge Flap Control System
  > (CAN) ON 23-JUL-2019, THE FLIGHT CREW OBSERVED A FLAP POWER CAUTION LIGHT ON APPROACH. THEY DIVERTED TO THE ALTERNATE AIRPORT AND LANDED WITHOUT INCIDENT THERE. THE MAINTENANCE CREW CARRIED OUT AN INSPECTION AND RESET THE CIRCUIT BREAKER. THE AIRCRAFT RETURN
- [SDR CA190731021](https://openairdocs.org/sdr/CA190731021.md): Oil Cooler · malfunctioned · Jul 31, 2019 · Bombdr DHC8400 · Engine Oil Cooler
  > (CAN) MOC REPORT: FLIGHT QF 2086 #1 ENGINE HIGH OIL TEMP. ENGINE POWER REDUCED AS PER AFM. PAN DECLARED AND A/C RETURN BACK TO DEPARTURE AIRPORT. (TC# 20190731021)
- [SDR CA190731017](https://openairdocs.org/sdr/CA190731017.md): Adc · failed · Jul 30, 2019 · Bombdr DHC8400 · Air Data Computer
  > (CAN) IN CRUISE, ALT FAIL, IAS FAIL ON PFD #1. ASSOCIATED CAUTIONS FOR PITCH TRIM, ELEVATOR FEEL, PROP DEICE, SPOILER OB, ROLL SPLR OB HYD, RUD CNTRL. CB`S A7/A4 (LEFT UPPER) RELEASED. MAINTENANCE REPLACED THE #1 AIR DATA UNIT, COMPLETED THE OPS CHECKS AND THE
- [SDR CA190801005](https://openairdocs.org/sdr/CA190801005.md): Pump · damaged · Jul 30, 2019 · Bombdr DHC8400 · Aircraft Fuel Distribution System
  > (CAN) LEFT HAND ENGINE FUEL LOW PRESSURE CAUTION LIGHT ILLUMINATED AFTER TAKEOFF. CREW ACTIONED QRH AND LIGHT EXTINGUISHED WITH FUEL BOOST PUMP ON. MAINTENANCE TROUBLESHOOTING DISCOVERED A BROKEN CHECK VALVE IN THE LH PRIMARY FUEL EJECTOR PUMP. THE CHECK VALVE
- [SDR CA190731015](https://openairdocs.org/sdr/CA190731015.md): Flow Divider · malfunctioned · Jul 29, 2019 · Bombdr DHC8400 · Fuel Divider
  > (CAN) REJECTED TAKEOFF DUE TO #1 ENGINE NOT GOING TO FULL POWER (MAX 50%). CREW RETURNED TO THE GATE DEPLANED PASSENGERS. RDC NP LDG SWITCH RESET AND AIRCRAFT POWER DOWN/POWER UP COMPLETED. ANOTHER RUN SAME RESULT. MAINTENANCE REPLACED THE #1 FLOW DIVIDER, EN
- [SDR CA190731024](https://openairdocs.org/sdr/CA190731024.md): Control Unit · failed · Jul 29, 2019 · Bombdr DHC8400 · Propeller Controlling System
  > (CAN) FOLLOWING ENGINE START, #2 PROPELLER WOULD NOT FULLY UNFEATHER. WITH POWER LEVERS SET ABOVE DISC, RPM EQUALIZED WITH ASSOCIATED SPLIT IN PARAMETERS DUE TO UNEQUAL PROP PITCH. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE #2 PITCH CONTROL UNIT.
- [SDR CA190823020](https://openairdocs.org/sdr/CA190823020.md): Selector Valve · low · Jul 29, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) ON APPROACH, THE NLG WAS SLOW TO EXTEND, TROUBLESHOOTING BY MAINTENANCE DETERMINED THE MAIN SELECTOR VALVE WAS AT FAULT, VALVE REPLACED AND A/C RTS (TC# 20190823020)
- [SDR CA190731014](https://openairdocs.org/sdr/CA190731014.md): Check Valve · leaking · Jul 29, 2019 · Bombdr DHC8400 · Hydraulic System, Main
  > (CAN) FLIGHT CREW REPORTED THAT ON DECENT THROUGH 12000` THE #1 HYDRAULIC QUANTITY DROPPED TO ZERO AND THE #1 HYDRAULIC ISO LIGHT ILLUMINATED. CREW DECLARED AN EMERGENCY AND CARRIED OUT A FLAPLESS LANDING. MAINTENANCE TROUBLESHOOTING IDENTIFIED A LEAK IN THE H
- [SDR CA190729011](https://openairdocs.org/sdr/CA190729011.md): Actuator · malfunctioned · Jul 28, 2019 · Bombdr DHC8400 · Landing Gear Actuator
  > (CAN) PIC REPORT/HYD LEAK ON RH WHEEL WELL WHILE AIRCRAFT STANDING. MAINTENANCE STARTED TROUBLE SHOOTING AND FOUND HYDRAULIC LEAH FROM RETRACTION ACTUATOR. RH MLG RETRACTION ACTUATOR CHANGE IN PROGRESS. (TC# 20190729011)
- [SDR CA190731027](https://openairdocs.org/sdr/CA190731027.md): Connector · corroded · Jul 27, 2019 · Bombdr DHC8400 · Landing Gear System Wiring
  > (CAN) ATB DUE TO GEAR FAILED TO RETRACT DEFERRED BY MEL 32-30-01X GEAR PINS INSTALLED BY CREW NOSE GEAR LOCK PULLED IAW AFM SUPP 94. CAT2/3 STATUS DOWNGRADED FERRY FLIGHT TO MAINTENANCE BASE LGDLK2 SENSOR SHOWING DASHES. REPLACED AND RIGGED PROX SENSOR HARNES
- [SDR CA190729012](https://openairdocs.org/sdr/CA190729012.md): Brake · failed · Jul 27, 2019 · Bombdr DHC8400 · Landing Gear Brake System
  > (CAN) DURING REPLACEMENT OF MAIN WHEEL ASSY, BRAKE ASSY 2 WAS OBSERVED TO BE LOCKED. DURING REPLACEMENT OF MAIN WHEEL DUE TO FLAT SPOT, FOUND BRAKE ASSY 2 LOCKED. MAIN WHEEL AND BRAKE ASSY REPLACED. ANTI SKID OPS TEST PERFORMED PER AMM. LEAK CHECK PERFORMED. N
- [SDR CA190821009](https://openairdocs.org/sdr/CA190821009.md): Landing Gear · out of rig · Jul 27, 2019 · Bombdr DHC8400 · Nose/Tail Landing Gear
  > (CAN) DURING LANDING, NLG SLOW TO EXTEND WITH VIBRATION AND NOISE HEARD FROM NOSE AREA. MAINTENANCE WAS ABLE TO DUPLICATE IN HANGAR. FOUND MECHANICAL SEQUENCE VALVE OUT OF RIG. RIGGED MSV AND BLED HYD SYSTEM. NO GRINDING AND ALL OPS CHECKS GOOD. A/C RTS (TC#
- [SDR CA190823014](https://openairdocs.org/sdr/CA190823014.md): Cabin Pressure · unknown · Jul 27, 2019 · Bombdr DHC8400 · Cabin Pressure Control System
  > (CAN) ATB DUE TO AIRCRAFT DEPRESSURIZATION AT FL250. GROUND PRESSURIZATION TESTS CARRIED OUT. LEAK TRACED TO ADF ANTENNA AND FUSELAGE DRAIN HELD OPEN BY DEBRIS. AIRCRAFT IS NOW SERVICEABLE. (TC# 20190823014)
- [SDR CA190731018](https://openairdocs.org/sdr/CA190731018.md): Selector Valve · malfunctioned · Jul 26, 2019 · Bombdr DHC8400 · Landing Gear Door Retract Section
  > (CAN) ON 26-JUL-2019, UPON DEPARTURE, IT WAS NOTICED BY THE FLIGHT CREW THAT ALL 3 RED GEAR UNSAFE ADVISORY LIGHTS REMAINED ILLUMINATED WITH THE GEAR HANDLE IN THE UP POSITION. ON CONSULTATION WITH THE DISPATCHER THE CREW ELECTED TO PROCEED TO THE DESTINATION
- [SDR CA190730013](https://openairdocs.org/sdr/CA190730013.md): Filter · clogged · Jul 26, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) PILOT REPORTED NOSE GEAR FAILED TO EXTEND AND LOCK. TRYING NORMAL AND ALTERNATE EXTENSION WITH NO SUCCESS AFTER DECISION TO LAND NOSE GEAR EXTENDED AND LOCKED WITHOUT ANY FURTHER ACTION BACKGROUNG & MAINTENANCE ACTIVITY THIS AIRCRAFT HAD A PREVIOUS EVE
- [SDR CA190819013](https://openairdocs.org/sdr/CA190819013.md): Warning Message · false activation · Jul 25, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) JUST AFTER TAKE-OFF THE CAPTAIN OBSERVED A RIGHT-HAND GEAR INDICATION ILLUMINATED GREEN AFTER LANDING GEAR RETRACTION. ATB PERFORMED - R/H MLG GREEN ANNUNCIATOR REMAINING ON FOLLOWING GEAR UP SELECTION. ALTERNATE INDICATIONS NORMAL. MAINTENANCE WAS ABLE
- [SDR CA190807019](https://openairdocs.org/sdr/CA190807019.md): Controller · failed · Jul 25, 2019 · Bombdr DHC8400 · Cabin Pressure Controller
  > (CAN) AIRCRAFT DEPRESSURIZED BETWEEN FL 100 AND FL 200. CPC REPLACED. NO FURTHER PROBLEM REPORTED. (TC# 20190807019)
- [SDR CA190806007](https://openairdocs.org/sdr/CA190806007.md): Tire · deflated · Jul 24, 2019 · Bombdr DHC8400 · Tire
  > (CAN) RAMP CREW REPORTED NOSE TIRE FLAT AND POSSIBLE AXLE DAMAGE, BEARING SEIZED TO AXLE. MAINTENANCE FOUND RIGHT HAND NOSE WHEEL RIM TIE BOLTS OBSERVED AS NOT TORQUED. ALL BOLTS WERE LOOSE AND NOT TREADS NOT IN SAFETY. TIRE FOUND DEFLATED AND RESULTING BEARIN
- [SDR CA190816009](https://openairdocs.org/sdr/CA190816009.md): Bearing · failed · Jul 24, 2019 · Bombdr DHC8400 · Wheel/Ski/Float
  > (CAN) L MAIN OUTBOARD WHEEL SMOKING AFTER PARKING. METAL SHAVINGS OBSERVED IN AND AROUND WHEEL. CRACK IN OUTBOARD HUBCAP. CONFIRMED INBD BEARING FAILED. AXLE, BRAKE AND MAIN WHEEL REPLACED, A/.C RTS (TC# 20190816009)
- [SDR CA190726023](https://openairdocs.org/sdr/CA190726023.md): Gearbox · making metal · Jul 23, 2019 · Bombdr DHC8400 · Turbine Engine Reduction Gear
  > (CAN) #1 ENGINE FAULT CODE 939 (RGB CHIPS DETECTED) WAS RECEIVED THROUGH THE FAST SYSTEM. MATERIAL WAS ROUTED TO THE LAB AND WAS DETERMINED TO BE M50. FAULT CODE REPEATED THE FOLLOWING DAY AND THE ENGINE WAS REMOVED FROM SERVICE. RGB WILL BE ROUTED TO THE MANU
- [SDR CA190726031](https://openairdocs.org/sdr/CA190726031.md): Wheel · damaged · Jul 23, 2019 · Bombdr DHC8400 · Wheel/Ski/Float
  > (CAN) ON 23-JUL-2019, THE AIRCRAFT EXPERIENCED A STRONG VIBRATION ON THE TAKEOFF ROLL. UPON VISUAL INSPECTION AFTER TAKEOFF, IT WAS DETERMINED THAT ONE OF THE TIRES ON THE MAIN LANDING GEAR HAD BLOWN UP ON TAKEOFF. THE AIRCRAFT CONTINUED TO THE DESTINATION AIR
- [SDR CA190816003](https://openairdocs.org/sdr/CA190816003.md): Pseu · failed · Jul 23, 2019 · Bombdr DHC8400 · Landing Gear Retraction/Extension System
  > (CAN) "ON TAKEOFF, MOVED THE GEAR LEVER TO THE UP POSITION. ALL GEAR LIGHTS EXTINGUISHED EXCEPT THE N. DOOR AMBER LIGHT. IMMEDIATELY AFTER THAT, THE LDG GEAR INOP CAUTION LIGHT ILLUMINATED. DURING ALTERNATE GEAR EXTENSION CHECKLIST, ALL THREE GREEN LIGHTS ILLU
- [SDR CA190725001](https://openairdocs.org/sdr/CA190725001.md): Line · leaking · Jul 23, 2019 · Bombdr DHC8400 · Hydraulic System, Main
  > (CAN) LOSS HYD PRESS #1 WITH #1 HYD PUMP CAUTION MAINT - CONFIRMED HYD LEAK NOTED ON LH WING ROOT (TC# 20190725001)
- [SDR CA190807009](https://openairdocs.org/sdr/CA190807009.md): Controller · failed · Jul 23, 2019 · Bombdr DHC8400 · Cabin Pressure Controller
  > (CAN) DURING CRUISE A/C STARTED TO DE-PRESSURIZE. CAPTAIN RECOVERED THE CONTROL IN MANUAL AND DESCENDED TO FL 200. FLIGHT CONTINUED TO DESTINATION. A/C PLACED ON MEL FOR MANUAL PRESSURIZATION. CPC WAS REPLACED ON 23-JUL-2019. NO FURTHER PROBLEM REPORTED BY OPE
- [SDR CA190723007](https://openairdocs.org/sdr/CA190723007.md): Control Unit · unknown · Jul 22, 2019 · Bombdr DHC8400 · Propeller Controlling System
  > (CAN) PROPELLER #2 OVERSPEED WAS REPORTED BY THE CREW AFTER TAKE OFF. PCU FAILURE WAS CONFIRMED AND PCU WAS REPLACED (TC# 20190723007)
- [SDR CA190724011](https://openairdocs.org/sdr/CA190724011.md): Lock · out of rig · Jul 22, 2019 · Bombdr DHC8400 · Cargo/Baggage Doors
  > (CAN) ON 22-JUL-2019, THE FLIGHT CREW RECEIVED A FUSELAGE DOORS MASTER WARNING LIGHT AFTER DEPARTURE. THE CREW ELECTED TO RETURN TO THE AIRPORT OF ORIGIN AND THE AIRCRAFT LANDED WITHOUT ANY FURTHER INCIDENT. THE MAINTENANCE CREW CARRIED OUT TROUBLESHOOTING AN
- [SDR CA190722012](https://openairdocs.org/sdr/CA190722012.md): Lock · out of rig · Jul 21, 2019 · Bombdr DHC8400 · Landing Gear Position and Warning
  > (CAN) AFTER TAKE-OFF THE DURING LANDING GEAR RETRACTION, THE NLG RED TRANSIT INDICATION LIGHT REMAIN ILLUMINATED. * FLIGHT CREW EXERCISED THE GEAR BUT IT DIDN`T HELP. * AFTER A REPETITIVE TRIAL THE CREW DECIDED TO RETURN BACK TO THE DEPARTURE STATION AND WHEN
- [SDR CA190723011](https://openairdocs.org/sdr/CA190723011.md): Skin · cracked · Jul 20, 2019 · Bombdr DHC8400 · Rudder, Plate/Skin
  > (CAN) A 3.4` CRACK WAS DISCOVERED ON THE LH UPPER SKIN THAT WAS BEYOND GENERIC REPAIR LIMITS. (TC# 20190723011)
- [SDR CA190722013](https://openairdocs.org/sdr/CA190722013.md): Relay · faulty · Jul 20, 2019 · Bombdr DHC8400 · Ice/Rain Protection System Wiring
  > (CAN) REPEATED STANDBY PITOT HEAT CAUTION IN FLIGHT, PITOT TUBE AND TMU WERE REPLACED BUT THE DEFECT RETURNED, MTC`S TROUBLESHOOTING INDICATE THAT TAPPING THE RELAY RECTIFIED THE FAULT. THE RELAY WERE PREVIOUSLY REPLACED 9 DAYS AGO. THE 3000-K5 RELAY WERE REPL
- [SDR CA190719007](https://openairdocs.org/sdr/CA190719007.md): Shutoff Valve · failed · Jul 18, 2019 · Bombdr DHC8400 · Pneumatic Distribution System
  > (CAN) REJECTED TAKE OFF DUE TO BLEED HOT CAUTION. HPSOV REPLACED. A/C BACK INTO SERVICE. (TC# 20190719007)
- [SDR CA190719005](https://openairdocs.org/sdr/CA190719005.md): Transducer · malfunctioned · Jul 17, 2019 · Bombdr DHC8400 · Propeller Controlling System
  > (CAN) ON JULY 17TH 2019, A DASH 8 Q400, WAS CLIMBING WHEN THE CREW REPORTED A POWERPLANT` MESSAGE ON THE ED. THE AIRCRAFT CONTINUED THE FLIGHT TO DESTINATION. MAINTENANCE TROUBLE SHOT THE DEFECT WITH FIM/AMM PROCEDURES. MAINTENANCE REPLACED THE BETA FEEDBACK
- [SDR CA190722006](https://openairdocs.org/sdr/CA190722006.md): Frame · cracked · Jul 17, 2019 · Bombdr DHC8400 · Cargo/Baggage Doors
  > (CAN) A CRACK IN FRAME P/N 85339586 WAS DISCOVERED WHILE INCORPORATING SB 84-53-72. (TC# 20190722006)

Next page: https://openairdocs.org/model/dehavilland-dhc-8-400/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 aircraft_model_key = 'DHC8400'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/dehavilland-dhc-8-400/reports

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