# Service difficulty reports: Diamond Aircraft Ind DA 40 NG

A list on [Diamond Aircraft Ind DA 40 NG](https://openairdocs.org/model/diamond-aircraft-ind-da-40-ng.md).

Newest first. General aviation reporting is voluntary.

- [SDR QEMY2026102100882](https://openairdocs.org/sdr/QEMY2026102100882.md): Seal · cracked · Oct 21, 2026 · N446L · Diamon DA40NG · Turbine Section
  > THE SEAL-INTERSTAGE HPT ROTOR HAS CRACKS IN 4 LOCATIONS ON THE BAYONET TABS. THE CONDITION IS NOT SERVICEABLE OR REPAIRABLE. TO BE REPORTED I AW AMC-20 8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF IT
- [SDR 2026FA0000915](https://openairdocs.org/sdr/2026FA0000915.md): Timing Chain · broken · Oct 20, 2026 · N905RG · Diamon DA40NG · Reciprocating Engine Power Section
  > APPROXIMATELY 140 HOURS SINCE NEW ON THE ENGINE. TIMING CHAIN FAILED IN FLIGHT AFTER SETTING CRUISE CONFIGURATION CAUSING TOTAL POWER LOSS. AIRCRAFT LANDED AT NAVY OUTLYING FIELD SUMMERDALE. TIMING CHAIN WAS VISUALLY FOUND BROKEN DURING INSPECTION. PRIOR TO PU
- [SDR 2025FA0000413](https://openairdocs.org/sdr/2025FA0000413.md): Ecu · faulted · Jun 20, 2025 · N670L · Diamon DA40NG · Fuel Control/Turbine Engines
  > PILOT REPORT: COMING BACK IN ON LIFT ARRIVAL, FELT ENGINE SHUDDER FOLLOWED BY DUAL ECU FAILURE. ECU A KEPT COMING ON AND OFF. INTERMITTENT POWER LOSS, HEADING TO 2R2. COMING INTO LAND AT 2R2, HAD LOSS OF OIL PRESSURE. MAINTENANCE FINDINGS: FOUND ROCKER COVER P
- [SDR 2025FA0000188](https://openairdocs.org/sdr/2025FA0000188.md): Pin · cracked · Mar 13, 2025 · N976L · Diamon DA40NG · Fuselage, Landing Gear Attach Fittings
  > CRACK FOUND ON NLG TRUNNION PIN
- [SDR 2025FA0000187](https://openairdocs.org/sdr/2025FA0000187.md): Bearing Shaft · broken · Feb 17, 2025 · N941L · Diamon DA40NG · Nose/Tail Landing Gear
  > NOSE GEAR COLLAPSED WHEN STARTING TO TAXI AFTER RUNUP.
- [SDR 2024FA0000750](https://openairdocs.org/sdr/2024FA0000750.md): Piston · cracked · Oct 3, 2024 · N977L · Diamon DA40NG · Reciprocating Engine Cylinder Section
  > ENGINE POWER & RPM LOSS IN FLIGHT. FUMES COMING THROUGH AIR VENT. EMERGENCY LANDING INTO KHFY. FOUND #1 PISTON CRACKED. TERMINATING ACTION FOR AD2024-05-01 WAS TAKEN ON 2/8/2024 AT 722.1 ETT. AD 2024-05-01"FUEL INJECTOR CHANGE" WAS COMPLIED WITH ON 3/10/202 AT
- [SDR 2025FA0000185](https://openairdocs.org/sdr/2025FA0000185.md): Bearing Shaft · broken · Sep 14, 2024 · N670L · Diamon DA40NG · Nose/Tail Landing Gear
  > NOSE GEAR COLLAPSED DURING TAXI. FOUND NOSE GEAR BEARING JURNAL BROKEN.
- [SDR 2024FA0000446](https://openairdocs.org/sdr/2024FA0000446.md): Piston · cracked · Jun 13, 2024 · N858L · Diamon DA40NG · Aircraft Fuel Distribution System
  > PILOT REPORTED ON CLIMBING TO ALTITUDE, EXPERIENCED LOSS OF POWER APPROX, 25% AND OSCILLATION OF POWER AND RPM. STARTED TO SMELL ODD SMELL LIKE BURNING, DUAL ECU A & B FAILURE POPPED UP. ENOUGH POWER REMAINED TO ALLOW RETURN, AFTER LANDING PLANE STARTED TO SHA
- [SDR 2024FA0000141](https://openairdocs.org/sdr/2024FA0000141.md): Rod Bolt · sheared · Feb 9, 2024 · N517BL · Diamon DA40NG · Reciprocating Engine Power Section
  > UNUSUAL CLANGING SOUNDS HEARD DURING A TRAINING FLIGHT. IMMEDIATELY TURNED TO BASE AND GAINED ALTITUDE TO ASSURE SAFE LANDING AT JNX. AFTER 2 MILES, A DUAL ECU FAIL BECAME ACTIVE DUE TO LOW OIL PRESSURE. CONTINUED FLIGHT AT IDLE. AT 3 MILES FROM BASE, OIL PRES
- [SDR 2023FA0000854](https://openairdocs.org/sdr/2023FA0000854.md): Piston · broken · Dec 22, 2023 · N445L · Diamon DA40NG · Reciprocating Engine Power Section
  > THE AIRCRAFT WAS IN CRUISE AT APPROXIMATELY 7500’ WHEN THEY EXPERIENCED SOME ENGINE ROUGHNESS, A LOSS OF OIL PRESSURE AND THE ENGINE QUIT. THEY LANDED AT THE GEORGETOWN, SC AIRPORT AT APPROXIMATELY 5:30PM. MAINTENANCE FOUND OIL ON THE AIRCRAFT, A HOLE IN THE S
- [SDR 2023FA0000767](https://openairdocs.org/sdr/2023FA0000767.md): Piston · failed · Nov 18, 2023 · N854L · Diamon DA40NG · Engine (Turbine/Turboprop)
  > PILOT REPORTED PARTIAL ENGINE POWER LOSS AND OIL LOSS. INSPECTED ENGINE AND FOUND THE #4 PISTON CRACKED/HOLE
- [SDR 2023FA0000435](https://openairdocs.org/sdr/2023FA0000435.md): Engine · mismanufactured · Aug 18, 2023 · N403BL · Diamon DA40NG · Powerplant System
  > REPEATED ENGINE ROUGHNESS ISSUES - (1) ENGINE ROUGHNESS W/ OSCILLATING RPM AND VERY AGGRESSIVE JOLTING AT 75% CRUISE POWER. ANY POWER ABOVE 75% STARTING JOLTING AGGRESSIVELY AGAIN. (2) ENGINE ROUGHNESS AT 2,000FT. RPM WENT INTO THE RED, PULLED POWER BACK. WENT
- [SDR 2023FA0000432](https://openairdocs.org/sdr/2023FA0000432.md): Engine · mismanufactured · Aug 18, 2023 · N416BL · Diamon DA40NG · Turbine Engine Combustion Section
  > PILOT REPORTED ENGINE ROUGHNESS ON TAKEOFF WITH LOAD AND RPM OSCILLATIONS.
- [SDR 2023FA0000431](https://openairdocs.org/sdr/2023FA0000431.md): Engine · mismanufactured · Aug 18, 2023 · N518BL · Diamon DA40NG · Engine (Reciprocating)
  > PILOT REPORTED THAT THERE WAS ENGINE ROUGHNESS AND VIBRATIONS DURING TAKEOFF, NOTICED MOST AROUND 700 FEET AGL. THEY ALSO REPORTED PROP OVERSPEED.
- [SDR 7L7R2021110100001](https://openairdocs.org/sdr/7L7R2021110100001.md): Gear · failed · Sep 7, 2021 · N947L · Diamon DA40NG · Engine Fuel Pump
  > ENGINE QUIT ON CLIMB OUT. SAFE RETURN TO AIRFIELD. FOUND TEETH MISSING ON HIGH PRESSURE FUEL PUMP AND CAMSHAFT. REPLACED THE ENGINE AND FUEL PUMP.
- [SDR 2020FA0000447](https://openairdocs.org/sdr/2020FA0000447.md): Actuator · inoperative · Oct 15, 2020 · N454M · Diamon DA40NG · Exhaust Turbocharger
  > ON TAKEOFF, DUAL ECU FAILURES NOTED ON PFD, BUT NO LOSS OF POWER. REDUCED POWER TO 92% AND CLIMBED TO SAFE ALTITUDE AT WHICH POINT ONLY ONE ECU FAILURE PERSISTED AND ENGINE OPERATED NORMALLY THROUGH LANDING. MX INSPECTED AND FOUND WASTEGATE ACTUATOR INOPERAB
- [SDR 2020FA0000343](https://openairdocs.org/sdr/2020FA0000343.md): Actuator · deteriorated · Jul 24, 2020 · N416BL · Diamon DA40NG · Exhaust Turbocharger
  > WASTEGATE ACTUATOR FAILS CAUSING ECU OVERBOOST FAIL CODES. WHEN THE ACTUATOR IS PRESSURE TESTED IT IS FOUND TO LEAK AIR DUE TO A LEAKING DIAPHRAGM. ACROSS A FLEET OF NINE DA40NGS AND DA42NGS ABOUT 25 OF THESE ACTUATORS HAVE NEEDED TO BE REPLACED OVER THE PAST
- [SDR 2020FA0000304](https://openairdocs.org/sdr/2020FA0000304.md): Ahrs · malfunctioned · Jun 10, 2020 · N454M · Diamon DA40NG · Attitude and Direction Data System
  > IN LEVEL CRUISE FLIGHT IN VMC, THE G1000 NXI PHASE II AHRS DISPLAYED A RED X AND THE AUTOPILOT DISENGAGED. THE PFD SHOWED FAILED ATTITUDE AND HEADING WITH THE MESSAGE AHRS ALIGN: KEEP WINGS LEVEL. THE GPS CONTINUED TO OPERATE NORMALLY. AFTER 32 SECONDS, THE
- [SDR 2020FA0000205](https://openairdocs.org/sdr/2020FA0000205.md): Actuator · inoperative · Mar 16, 2020 · N416BL · Diamon DA40NG · Exhaust Turbocharger
  > ON TAKE OFF. DUAL ECU FAILURE NOTED ON PDF. PILOT LANDED SAFELY. MX INSPECTED AND FOUND WASTEGATE ACTUATOR INOP. REPLACED ACTUATOR, GROUND RUN AND DATA DOWNLOAD GOOD. NO ISSUES ON NEXT FLIGHTS. I AM NOTING THIS TO MAKE THE FAA AWARE THAT THIS SAME ISSUE HAS OC
- [SDR 2020FA0000294](https://openairdocs.org/sdr/2020FA0000294.md): Actuator · inoperative · Feb 21, 2020 · N718NG · Diamon DA40NG · Exhaust Turbocharger
  > ON TAKEOFF, DUAL ECU FAILURES NOTED ON PDF. ABORTED TAKEOFF. MX INSPECTED AND FOUND WASTEGATE ACTUATOR INOP. REPLACED ACTUATOR, GROUND RUN, AND DATA DOWNLOAD GOOD PER MECHANIC. NO ISSUE ON ALL SUBSEQUENT FLIGHTS. THIS SAME ISSUE HAS BEEN REPORTED REGARDIN
- [SDR 2020FA0000302](https://openairdocs.org/sdr/2020FA0000302.md): Ahrs · warning message · Aug 6, 2019 · N718NG · Diamon DA40NG · Attitude and Direction Data System
  > IN LEVEL CRUISE FLIGHT IN VMC, THE G1000 NXI PHASE II AHRS SUDDENLY WENT OFFLINE. THE AUTOPILOT DISENGAGED. THE PFD SHOWED FAILED ATTITUDE AND HEADING WITH THE MESSAGE "AHRS ALIGN: KEEP WINGS LEVEL." GPS CONTINUED TO OPERATE NORMALLY. I MANUALLY KEPT THE P
- [SDR CA190724007](https://openairdocs.org/sdr/CA190724007.md): Actuator · failed · Jul 22, 2019 · Diamon DA40NG · Exhaust Turbocharger
  > (CAN) PILOT REPORTED DUAL ECU FAILURE DURING TAKE-OFF, FAILURE CODE 1E12. IT WAS FOUND THAT THE WASTE GATE ACTUATOR WOULD NOT HOLD PRESSURE. A NEW ACTUATOR WAS INSTALLED AND ADJUSTED. AIRCRAFT WAS RETURNED TO SERVICE. (TC# 20190724007)
- [SDR CA190711002](https://openairdocs.org/sdr/CA190711002.md): Hose · damaged · Jul 10, 2019 · Diamon DA40NG · Fuel Storage
  > (CAN) DURING FIRST ANNUAL INSPECTION OF THIS AIRCRAFT IN DIAMOND CANADA AMO, THE FUEL WAS SUMPED AND FINE BLACK DEBRIS WAS NOTED. UPON INSPECTION OF THE FUEL TANKS IT WAS DISCOVERED THAT LH & RH FUEL INTERCONNECT HOSES WERE COLLAPSING. (TC# 20190711002)
- [SDR CA190705004](https://openairdocs.org/sdr/CA190705004.md): Hinge Bracket · broken · Jun 20, 2019 · Diamon DA40NG · Fuselage, Door Hinge
  > (CAN) DURING THE FLIGHT THE REAR PASSENGER DOOR SEPARATED FROM THE AIRCRAFT AND PASSED OVER THE AIRCRAFT TAIL SECTION. THE PILOT RETURNED TO THE AIRFIELD OF DEPARTURE(DTMB) AND MADE A SAFE LANDING. THERE WAS NO DAMAGE TO THE AIRCRAFT. THE SEPARATED DOOR PN:DA4
- [SDR CA190605007](https://openairdocs.org/sdr/CA190605007.md): Hose · disintegrated · Jun 5, 2019 · Diamon DA40NG · Aircraft Fuel Distribution System
  > (CAN) DURING SCHEDULED 100 HOUR INSPECTION SMALL BITS OF RUBBER WERE FOUND IN GASCOLATOR, FUEL TANKS REMOVED AND LH & RH INTER-CONNECT HOSES WERE FOUND DEFECTIVE. (TC# 20190605007)
- [SDR CA190531012](https://openairdocs.org/sdr/CA190531012.md): Hose · degraded · May 31, 2019 · Diamon DA40NG · Fuel Storage
  > (CAN) FUEL TANK INTERCONNECT HOSE FOUND FAILING IN LH MAIN FUEL TANK ASSEMBLY OF LH WING, INNER LAYERS OF RUBBER APPEAR TO BE SEPARATING. INSPECTION OF RH TANK FOUND NO DEFECTS. (TC# 20190531012)
- [SDR CA190529016](https://openairdocs.org/sdr/CA190529016.md): Hose · disintegrated · May 29, 2019 · Diamon DA40NG · Fuel Storage
  > (CAN) FUEL TANK INTER-CONNECT HOSE IS DEGRADING/DELAMINATING, INNER LAYER OF MULTI-LAYER HOSE IS COMING AWAY FROM OTHER LAYERS AND CONTAMINATING FUEL TANK. (TC# 20190529016)
- [SDR 2019FA0000167](https://openairdocs.org/sdr/2019FA0000167.md): Hose · deteriorated · May 29, 2019 · N987DA · Diamon DA40NG · Fuel Storage
  > AIRCRAFT ARRIVED FOR INSPECTION OF LEFT WING FUEL LEAK. REMOVED WING AND REMOVED TANK FROM WING. FOUND LEAK TO BE CAUSED BY A CRACK AROUND A RIVET IN THE TANK. UPON REMOVING COMPONENTS FROM TANK TO INSTALL ON NEW TANK IT WAS DISCOVERED THAT THE RUBBER CONNECTI
- [SDR CA190524019](https://openairdocs.org/sdr/CA190524019.md): Fuel Tank · leaking · May 22, 2019 · Diamon DA40NG · Fuel Storage
  > (CAN) SMALL CRACK FOUND AROUND SPOT WELD FOR TANK RIB CAUSING FUEL LEAK. (TC# 20190524019)
- [SDR CA190515006](https://openairdocs.org/sdr/CA190515006.md): Support Plate · cracked · May 14, 2019 · Diamon DA40NG · Fuselage, Landing Gear Attach Fittings
  > (CAN) DURING SCHEDULED INSPECTION BOTH RH AND LH MLG SUPPORT BRACKETS FOUND CRACKED. (TC# 20190515006)
- [SDR CA190501014](https://openairdocs.org/sdr/CA190501014.md): Shaft · sheared · Apr 30, 2019 · Diamon DA40NG · Propeller Governor
  > (CAN) GOVERNOR HAS INTERNAL LATCH FAILURE DURING INITIAL GROUND RUNS. FOUND GOVERNOR SHAFT SHEARED OFF WHEN GOVERNOR REMOVED. AIRCRAFT HAS ZERO TIME IN SERVICE. (TC# 20190501014)
- [SDR CA190617006](https://openairdocs.org/sdr/CA190617006.md): Support Bracket · cracked · Mar 19, 2019 · Diamon DA40NG · Fuselage, Landing Gear Attach Fittings
  > (CAN) DURING SCHEDULED INSPECTION BOTH RH AND LH MLG SUPPORT BRACKETS FOUND CRACKED.
- [SDR CA190313014](https://openairdocs.org/sdr/CA190313014.md): Door · detached · Mar 11, 2019 · Diamon DA40NG · Passenger/Crew Doors
  > (CAN) REPORT OF PASSENGER DOOR DETACHMENT ON A DA40NG (S/N 40.N019) WHILE IN FLIGHT. PILOT DECLARED EMERGENCY AND LANDED UNEVENTFULLY. (TC# 20190313014)

## 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 = 'DA40NG'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/diamond-aircraft-ind-da-40-ng/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.