# Service difficulty reports: Bell 407

A list on [Bell 407](https://openairdocs.org/model/bell-407.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 137 · 6,813 reports

- [SDR VE7A2026101200226](https://openairdocs.org/sdr/VE7A2026101200226.md): Switch · failed · Oct 5, 2026 · N450PH · Bell 407 · Engine Control System Wiring
  > DURING CRUISE FLIGHT, AIRCRAFT EXPERIENCED A FADEC FAILURE RESULTING IN LANDING OFFSITE AND PERFORMANCE OF A RUN ON LANDING.
- [SDR QMLA2026092520073](https://openairdocs.org/sdr/QMLA2026092520073.md): Fuel Sys · not reported · Sep 24, 2026 · N184AM · Bell 407 · Fuel Storage
  > DURING FLIGHT PILOT THOUGHT HE HAD EXCESSIVE FUEL BURN THEN THE CREW REPORTED GAS FUMES. INSPECTED FUEL SYSTEM FOR LEAKS AND INTEGRITY, NO DISCREPANCIES FOUND. CHECKED FADEC FOR ANY FAULT CODES, NONE FOUND. PERFORMED GROUND RUNUP WITH NORMAL FUEL BURN RATES.
- [SDR QMLA2026092120072](https://openairdocs.org/sdr/QMLA2026092120072.md): Blower · odor · Sep 20, 2026 · N229AM · Bell 407 · Air Distribution Fan
  > ON GOING ISSUE WITH AN ELECTRICAL SMELL IN FLIGHT. HAPPENED AGAIN LAST NIGHT FIRST TIME ME THE PILOT EVER SMELLED IT. WORKED THROUGH TO ISOLATE THE PROBLEM AND APPEARS TO BE THE BLOWER COMPONENTS. DISCREPANCY DEFERRED IN REF TO AMBH407 MEL REV#27. MEL ITEM 210
- [SDR EVCA20260915001](https://openairdocs.org/sdr/EVCA20260915001.md): Duct · collapsed · Sep 14, 2026 · N660AE · Bell 407 · Air Distribution System
  > ELECTRICAL ODOR IN CABIN FOLLOWED BY AIR CONDITIONER FAILURE. THE HOSE IN BETWEEN THE EVAPORATOR AND AFT BLOWER COLLAPSED CAUSING THE AFT BLOWER CB TO POP.
- [SDR QMLA2026091320064](https://openairdocs.org/sdr/QMLA2026091320064.md): Bypass Valve · failed · Sep 13, 2026 · N293AM · Bell 407 · Engine (Turbine/Turboprop)
  > UPON LANDING NOTICED COPIOUS AMOUNTS OF SMOKE BILLOWING FROM THE EXHAUST. SHUTDOWN AND NOTED THAT THE ENGINE OIL SITE GLASS WAS EMPTY. REPLACED ENGINE TURBINE ASSEMBLY, COMPETED AAIP INSPECTIONS, RII CHECKLIST, OPERATIONAL CHECKS, AIRCRAFT RETURNED TO REVENUE
- [SDR QMLA2029090520061](https://openairdocs.org/sdr/QMLA2029090520061.md): Unknown · odor · Sep 2, 2026 · N229AM · Bell 407 · Air Distribution System
  > DURING FLIGHT THERE WAS AN INTERMITTENT ELECTRICAL BURNING SMELL, NO SMOKE, UNIDENTIFIED SOURCE. PREFORMED AIRCRAFT OPERATIONS CHECK AND GROUND RUN FOR 16 MINUTES. PUT UNDER ELECTRICAL LOAD AND ALL AIR CONDITIONING SETTINGS. COULD NOT DUPLICATE THE SMELL.
- [SDR 8LFA202608250003](https://openairdocs.org/sdr/8LFA202608250003.md): Resistor · failed · Aug 23, 2026 · N409LF · Bell 407 · Air Distribution Fan
  > DURING FLIGHT SMOKE/FUMES EMANATED FROM LEFT AIR CONDITIONING BLOWER. TROUBLESHOOTING REVEALED THAT A FAILED RESISTOR CAUSED THE BLOWER MOTOR TO FAIL AND PRODUCE SMOKE/FUMES. AIR COMM VAPOR CYCLE AIR CONDITIONING STC# SR00222DE INSTALLED.
- [SDR QMLA20260812](https://openairdocs.org/sdr/QMLA20260812.md): Indicator · inoperative · Aug 12, 2026 · N445SL · Bell 407 · Central Warning
  > RECEIVED AND INSTALLED REPLACEMENT MGT INDICATOR. APPLIED GROUND POWER AND THE UNIT PASSED THE LCD TEST. AFTER ENGINE START THE MGT INDICATED ZERO. AIRCRAFT WAS SHUTDOWN AND I PERFORMED AN MGT INDICATOR FUNCTIONAL CHECK WITH THE BARFIELD TURBINE TEMP TESTER. T
- [SDR QMLA2026081301](https://openairdocs.org/sdr/QMLA2026081301.md): Indicator · dim · Aug 11, 2026 · N445SL · Bell 407 · Central Warning
  > THE MGT INDICATOR WAS WRITTEN UP AS DIM. WE HAD A REPAIRED UNIT IN STOCK AND REPLACED THE INDICATOR. TWO POWER CYCLES WERE PERFORMED AND THE INDICATOR FUNCTIONED NORMALLY. THE PILOT THEN ATTEMPTED TO START THE AIRCRAFT AND ABORTED THE START AFTER A FEW SECONDS
- [SDR 2026FA0000635](https://openairdocs.org/sdr/2026FA0000635.md): Blower Motor · burned out · Aug 8, 2026 · N409GA · Bell 407 · Air Distribution System
  > SHORTLY AFTER DEPARTURE, TURNED ON THE BLOWER. AFTER A FEW MINUTES CREW REPORTED A BURNING RUBBER SMELL. I TURNED OFF THE BLOWER AND THE SMELL DISSIPATED. I TURNED ON THE AIR CONDITIONER TO SEE IF IT CAME BACK AND WE EXPERIENCED THE SAME SMELL. AFT BLOWER MOTO
- [SDR 2026FA0000617](https://openairdocs.org/sdr/2026FA0000617.md): Blower Motor · burned out · Jul 31, 2026 · N407BU · Bell 407 · Air Distribution Fan
  > CREW SMELLED A BURNING OR SMOKY SMELL COMING FROM AC VENTS. TURNED OFF AC AND BLOWER MOTOR, PULLED CIRCUIT BREAKER FOR AC, OPENED VENTS AND WINDOWS. AIRCRAFT LANDED WITH NO OTHER FAULTS.
- [SDR QMLA2026072720050](https://openairdocs.org/sdr/QMLA2026072720050.md): Unknown · odor · Jul 26, 2026 · N407LS · Bell 407 · Air Distribution System
  > DURING THE FLIGHT, AN ONGOING FUEL ODOR WAS PRESENT IN THE CABIN. BOTH CREW MEMBERS DETECTED THE ODOR, AND THE NURSE REPORTED BECOMING NAUSEATED FROM THE ODOR. AFTER SHUTDOWN, ENTERED THE AFT CABIN AND CONFIRMED THE FUEL ODOR WAS STILL PRESENT. THE ODOR WAS
- [SDR QMLA2026072520049](https://openairdocs.org/sdr/QMLA2026072520049.md): Dual Tachometer · degraded · Jul 23, 2026 · N404LL · Bell 407 · Engine RPM Indicating System
  > NEEDLES ON DUAL TACH NOT ALIGNED WHILE RUNNING. FADEC DEGRADED/RESTART FAULT LIGHT ILLUMINATED AFTER STARTUP. REMOVED AND REPLACED DEFECTIVE DUAL TACH GAUGE.
- [SDR YTRA202620720001](https://openairdocs.org/sdr/YTRA202620720001.md): Control Unit · melted · Jul 17, 2026 · N675RL · Bell 407 · Exterior Lighting
  > ON JULY 17, 2026, CONDUCTING TRAINING FLIGHTS WHEN THE PILOT OBSERVED SMOKE IN THE COCKPIT ON THE COPILOT’S SIDE NEAR THE INSTRUMENT SHROUD AREA. THE PILOT SUSPECTED THE SOURCE MAY HAVE BEEN THE AIRCRAFT’S BATTERY COMPARTMENT AND MADE A PRECAUTIONARY LANDING
- [SDR QMLA2026071720048](https://openairdocs.org/sdr/QMLA2026071720048.md): Unknown · odor · Jul 17, 2026 · N229AM · Bell 407 · Air Distribution System
  > ELECTRICAL ODOR NOTICED DURING FLIGHT BACK TO BASE. PERFORMED OPS CHECKS. UNABLE TO DUPLICATE SMELL. RTS
- [SDR QMLA2026071420046](https://openairdocs.org/sdr/QMLA2026071420046.md): Elec Connector · pulled · Jul 13, 2026 · N404LL · Bell 407 · Engine Fuel System Wiring
  > RESTART FAULT AND FADEC DEGRADED LIGHTS ILLUMINATED ON TAKE OFF. PULLED FAULT ADAPTOR ELEC CONNECTOR. CLEANED AND REINSTALLED. CLEARED CODE, OPS GROUND RUN GOOD. NO DEFECTS NOTED.
- [SDR QMLA2026071320045](https://openairdocs.org/sdr/QMLA2026071320045.md): Warning Light · false activation · Jul 13, 2026 · N407AM · Bell 407 · Central Warning
  > XMSN CHIP LIGHT ILLUMINATED IN FLIGHT, INSPECTED AND PERFORMED SERVICEABILITY CHECK. OPERATIONAL CHECK PERFORMED AS WELL. RTS.
- [SDR EVCA202607011](https://openairdocs.org/sdr/EVCA202607011.md): Warning Light · false activation · Jul 1, 2026 · N728AE · Bell 407 · Main Rotor Drive System
  > DEPARTED HOSPITAL, XSMN CHIP LIGHT ILLUMINATED APPROX 2 MIN AFTER DEPARTURE. ABORTED FLIGHT, CONDUCTED PRECAUTIONARY EMERGENCY LANDING AT AIRPORT. REMOVED AND INSPECTED UPPER AND LOWER TRANS AND FREE WHEELING CHIP DETECTORS, REMOVED AND CHECKED FILTER, AND FOU
- [SDR EVCA20260714001](https://openairdocs.org/sdr/EVCA20260714001.md): Motor · faulted · Jun 21, 2026 · N102AE · Bell 407 · Air Distribution Fan
  > AIRCRAFT DEPARTED THE BASE FOR A SCENE FLIGHT IN NASHVILLE ARKANSAS. APPROXIMATELY 5 MINUTES AFTER DEPARTURE CREW DESCRIBED SMELLING ELECTRICAL WIRES BURNING ALONG WITH ALL AIR CONDITIONER BLOWERS STOPPING. UPON TROUBLESHOOTING THE SYSTEM IT WAS FOUND THAT THE
- [SDR QMLA2026061320038](https://openairdocs.org/sdr/QMLA2026061320038.md): Oil System · low pressure · Jun 11, 2026 · N159AM · Bell 407 · Engine Oil Pressure
  > UPON INITIATION OF VISUAL APPROACH, THE CREW ALERTING SYSTEM DISPLAYED AN ENGINE OIL PSI WARNING. ADJUSTED OIL PRESSURE, OPS CHECKED GOOD. ALL MAINTENANCE COMPLETED. AIRCRAFT RELEASED TO REVENUE SERVICE. #59613
- [SDR QMLA2026061220037](https://openairdocs.org/sdr/QMLA2026061220037.md): Blower Motor · failed · Jun 11, 2026 · N407LS · Bell 407 · Air Distribution Fan
  > DURING DECELERATION ON APPROACH TO HOME BASE, BOTH AIR-CONDITIONING BLOWERS CEASED OPERATING. SHORTLY THEREAFTER, ALL OCCUPANTS DETECTED A BURNING PLASTIC ODOR IN THE AIRCRAFT. DEACTIVATED AIR CONDITIONING SYSTEM MEL'D 2100-01. REPLACED FORWARD RT EVAPORATOR
- [SDR QMLA2026061220036](https://openairdocs.org/sdr/QMLA2026061220036.md): Fuel Cap · leaking · Jun 8, 2026 · N113AM · Bell 407 · Fuel Storage
  > FUEL SMELL IN CABIN ON RETURN FLIGHT BACK TO BASE FROM PHOENIX AZ, REPLACED FUEL CAP.
- [SDR QMLA2026060520035](https://openairdocs.org/sdr/QMLA2026060520035.md): Unknown · odor · Jun 5, 2026 · N407LS · Bell 407 · Air Distribution System
  > ON TAKEOFF AND LANDING, STRONG FUEL/EXHAUST SMELL IN REAR CABIN.
- [SDR QMLA2026060120033](https://openairdocs.org/sdr/QMLA2026060120033.md): Chip Detector · contaminated · May 30, 2026 · N947MD · Bell 407 · Tail Rotor Gearbox
  > UPON LANDING TO TRANSLOAD A PATIENT, THE TGB CHIP LIGHT ILLUMINATED. DUE TO THIS INDICATION AND SUBSEQUENT ENGINE SHUTDOWN, WE WERE UNABLE TO COMPLETE THE TRANSPORT OF THE PATIENT. THE PATIENT WAS THEN MOVED BY AMBULANCE. CHIP DETECTOR CLEANED, FINDINGS INDICA
- [SDR 2026F00115](https://openairdocs.org/sdr/2026F00115.md): Engine · smoke · May 20, 2026 · N777ZA · Bell 407 · Engine (Turbine/Turboprop)
  > THIS IS TO REPORT A NEW EVENT FOLLOWING SDR NO. 2120-0663. THE REPAIRED ENGINE WAS TAKEN OUT OF SERVICE FOR THE ENGINE SMOKE WHEN ENGINE TRANSITIONS FROM FLY TO IDLE. TROUBLESHOOTING WAS CARRIED OUT PER THE ROLLS ROYCE MANUAL. NO DISCREPANCIES WERE NOTED.
- [SDR QMLA2026052020031](https://openairdocs.org/sdr/QMLA2026052020031.md): Blower · smoke · May 20, 2026 · N407LS · Bell 407 · Air Distribution Fan
  > SMOKE AND FUMES IN CABIN/COCKPIT FROM SUSPECTED AIR CONDITIONER BLOWER ISSUE
- [SDR EVCA20260511001](https://openairdocs.org/sdr/EVCA20260511001.md): Blower Motor · unserviceable · May 8, 2026 · N39AE · Bell 407 · Air Distribution Fan
  > SMOKE SMELL, AND VISUAL SMOKE IN CABIN. INSPECTED AIRCRAFT DETERMINED SMOKE SMELL TO BE COMING FROM AFT AC BLOWER MOTOR. REFERENCE AIR COMM ICA 407EC-200M-2.
- [SDR QMLA2026050720028](https://openairdocs.org/sdr/QMLA2026050720028.md): Unknown · odor · May 7, 2026 · N696AM · Bell 407 · Air Distribution System
  > RAW JET FUEL SMELL IN AIRCRAFT CABIN WHILE IN FLIGHT.
- [SDR 2026F00095](https://openairdocs.org/sdr/2026F00095.md): Hmu · faulted · Apr 30, 2026 · N670RL · Bell 407 · Fuel Control/Turbine Engines
  > PILOT GOT RESTART FAIL LIGHT ON CAUTION PANEL. TESTING UNIT REVEALED ERRATIC READINGS OF THE FUEL METERING VALVE POTENTIOMETER.
- [SDR 454A260420151853](https://openairdocs.org/sdr/454A260420151853.md): Spring · overtorqued · Apr 20, 2026 · N369PA · Bell 407 · Rotorcraft Servo System
  > DURING CLIMBOUT, LOUD BRIEF BUZZING NOISE HEARD. CREW STARTED SMELLING A CHARRING SMELL. CHARRING SMELL INCREASED WHILE ON THE GROUND. MAINTENANCE CREW TROUBLESHOT. EXTERNAL HYDRO POWER WAS APPLIED TO ATTEMPT TO IDENTIFY THE SERVO. COULD NOT REPLICATE THE CHAR
- [SDR 2026F00096](https://openairdocs.org/sdr/2026F00096.md): Metering Valve · faulted · Apr 19, 2026 · N660RL · Bell 407 · Fuel Controlling System
  > PILOT GOT RESTART FAULT ON CAUTION PANEL. CODES EXTRACTED WAS WFMVRTFLT INDICATING ISSUE WITH FUEL METERING VALVE POTENTIOMETER.
- [SDR QMLA2026040620026](https://openairdocs.org/sdr/QMLA2026040620026.md): Transmission · making metal · Mar 29, 2026 · N528AM · Bell 407 · Main Rotor Gearbox
  > TRANSMISSION CHIP LIGHT IN FLIGHT. DRAINED AND FLUSHED SYSTEM. OPS CHECKS GOOD RTS,
- [SDR 2026FA0000229](https://openairdocs.org/sdr/2026FA0000229.md): Brushes · worn · Mar 26, 2026 · N407WF · Bell 407 · Starter-Generator
  > FOUND ONE BRUSH ONLY OF FOUR, WORN TO METAL, CONTACTING ARMATURE. STARTER / GENERATOR, BELL P/N: 206-062-200-113, MFR P/N: 23081-018
- [SDR QMLA2026032120022](https://openairdocs.org/sdr/QMLA2026032120022.md): Wire Harness · faulted · Mar 20, 2026 · N773AL · Bell 407 · Engine Fuel System Wiring
  > ON SHORT FINAL THE FADEC CHANNEL FAIL CAUTION LIGHT ILLUMINATED; IT WAS FOLLOWED BY THE CHECK INSTRUMENT WARNING LIGHT A SECOND LATER, THEN FINALLY THE FADEC MAINTENANCE LIGHT CAME ON FOLLOWED BY A MARRIED LOSS OF MY NR AND NP NEEDLES. MUCH LIKE A BIT TEST THE
- [SDR QMLA2026032020021](https://openairdocs.org/sdr/QMLA2026032020021.md): Warning Light · false activation · Mar 20, 2026 · N645AM · Bell 407 · Main Rotor Gearbox
  > TRANSMISSION CHIP LIGHT ON ROLL UP TO FLIGHT. REMOVED AND INSPECTED ALL TRANSMISSION CHIP DETECTORS FOUND NO METAL DURING REINSTALL OF LOWER CHIP DETECTOR CHIP LIGHT CAME ON. TESTED LOWER CHIP DETECTOR FOUND IT HAD INTERNALLY FAILED.
- [SDR QMLA2026031920020](https://openairdocs.org/sdr/QMLA2026031920020.md): Solenoid Valve · failed · Mar 19, 2026 · N292AM · Bell 407 · Hydraulic System, Main
  > HYDRAULIC SYSTEM FAIL CAS ILLUMINATED ON TOUCHDOWN.
- [SDR 2026F00042](https://openairdocs.org/sdr/2026F00042.md): Skin · cracked · Mar 11, 2026 · N403PH · Bell 407 · Fuselage Main, Plate/Skin
  > THE MECHANIC WAS COMPLYING WITH THE ZONE 3 TRANSMISSION INSPECTION WHEN HE FOUND THE CRACK. IT WAS FOUND BECAUSE OF BLACK OIL AROUND THE AREA. HE CLEANED THE AREA AND COMPLETED A DYE PENETRANT INSPECTION TO VERIFY THE CRACK. THE CRACK LENGTH IS 2", LOCATED AT
- [SDR 8LFA202603100002](https://openairdocs.org/sdr/8LFA202603100002.md): Nut · loose · Mar 10, 2026 · N463LF · Bell 407 · Tail Rotor Head
  > DURING FLIGHT IT WAS NOTED AN ABNORMAL METALLIC NOISE EMANATING FROM THE TAIL BOOM AREA. IT WAS DECIDED TO PERFORM A PRECAUTIONARY LANDING DUE TO THE NOISE HEARD. UPON INSPECTION OF THE AIRCRAFT THE TAIL ROTOR MAST NUT WAS FOUND IN A LOOSE CONDITION. SAFETY
- [SDR VE7A202603190040](https://openairdocs.org/sdr/VE7A202603190040.md): Skin · cracked · Mar 3, 2026 · N401PH · Bell 407 · Fuselage Main, Plate/Skin
  > THE MECHANIC WAS COMPLYING WITH THE ZONE 3 TRANSMISSION INSPECTION WHEN HE FOUND A CRACK. THE CRACK WAS EMANATING FROM THE FORWARD RIGHT HAND PYLON BEAM ATTACHMENT POINT. IT WAS FOUND BECAUSE OF BLACK OIL AROUND THE AREA. HE CLEANED THE AREA AND COMPLETED A DY
- [SDR EVCA202603030002](https://openairdocs.org/sdr/EVCA202603030002.md): Unknown · odor · Mar 3, 2026 · N190AE · Bell 407 · Air Distribution System
  > CREW SMELLED ELECTRICAL BURNING WHEN HEATER WAS TURNED ON. COULD NOT DUPLICATE ON GROUND
- [SDR QMLA2026013120008](https://openairdocs.org/sdr/QMLA2026013120008.md): Pma · faulted · Jan 29, 2026 · N407AM · Bell 407 · Electrical Power System
  > PRECAUTIONARY LANDING MADE DUE TO GRINDING NOISE & VIBRATION IN COCKPIT. PMA FOUND TO BE FAULTY. REPLACED THE PMA.
- [SDR QMLA2026012520005](https://openairdocs.org/sdr/QMLA2026012520005.md): Chip Detector · false activation · Jan 23, 2026 · N473RA · Bell 407 · Main Rotor Gearbox
  > TRANSMISSION CHIP LIGHT CAME ON DURING APPROACH. CLEANED CHIP, GROUND RUN ACCOMPLISHED IAW DMC-407-A-63-00-00-0/A-319 TABLE 1
- [SDR QMLA2026011120002](https://openairdocs.org/sdr/QMLA2026011120002.md): Unknown · odor · Jan 11, 2026 · N772AL · Bell 407 · Air Distribution System
  > MED CREW REPORTS A FUEL ODOR WHILE IN FLIGHT. PERFORMED VISUAL INSPECTION OF ALL VIABLE FUEL LINES, FUEL SUMPS, FUEL NOZZLE, AND FUEL FILTERS, IAW AMM DMC 407-A-24-00-00-130A-A. NO LEAKS NOTED AT THIS TIME.
- [SDR EVCA20260105001](https://openairdocs.org/sdr/EVCA20260105001.md): Bracket · leaking · Jan 3, 2026 · N481AE · Bell 407 · Aircraft Fuel System
  > FUEL FUMES COMING OUT OF NURSE'S STATION SEAT BELT SLOT. REPAIRED BY REMOVING ROLLOVER ACCESS PANEL AND APPLIED SEALANT AROUND THE INERTIAL REEL RESTRAINT BRACKET
- [SDR QMLA2025112820118](https://openairdocs.org/sdr/QMLA2025112820118.md): Engine · making metal · Nov 28, 2025 · N223AM · Bell 407 · Engine (Turbine/Turboprop)
  > AIRCRAFT WAS APPROACHING STELLAR AIRPORT IN RENO, NV FOR FUEL WHEN THE ENGINE CHIP LIGHT CAME ON. PILOT LANDED AT THE AIRPORT AND CALLED MECHANICS. MECHANICS PULLED CHIP DETECTORS AND FOUND BOTH TO BE HEAVILY CONTAMINATED INCLUDING OIL SAMPLE.
- [SDR EVCA202512010001](https://openairdocs.org/sdr/EVCA202512010001.md): Hose · melted · Nov 26, 2025 · N870AE · Bell 407 · Cabin Cooling System
  > SMOKE IN CABIN, AC HOSE ASSY HAD SPIRAL WRAP ON IT THAT CONTACTED HEATER SYSTEM FITTING BETWEEN TUBES PN: S-9402EC-17 AND S-9402EC-12 WHICH MELTED AND IS SUSPECTED TO HAVE CAUSED THE SMOKE IN CABIN EVENT.
- [SDR 8LFA202506170004](https://openairdocs.org/sdr/8LFA202506170004.md): Blade · failed · Nov 8, 2025 · N411LF · Bell 407 · Engine (Turbine/Turboprop)
  > UPON START PILOT HEARD HIGH PITCH HOWLING NOISE EMANATING FROM ENGINE/EXHAUST AREA. PILOT ELECTED TO SHUTDOWN TO NOTIFY MAINTENANCE. UPON RECEIPT, PHI CONDUCTED A BORESCOPE INSPECTION AND NOTED DAMAGE ON THE 1ST STAGE TURBINE WHEEL. THE 1ST STAGE TURBINE WHE
- [SDR QMLA2025102320108](https://openairdocs.org/sdr/QMLA2025102320108.md): Oil Filter · failed · Oct 22, 2025 · N88YJ · Bell 407 · Turbine Engine Oil System
  > ON CLIMB OUT, ENGINE OIL FILTER CAUTION LIGHT ILLUMINATED. PROCEDURE IS LAND AS SOON AS PRACTICAL. I WAS OVER A NUMBER OF BUILDING AND ALREADY HEADED FOR THE AIRPORT AND CONTINUED TO LAND ON THE RAMP. INSPECTION AFTER SHUTDOWN SHOWED APPROPRIATE ENGINE OIL LEV
- [SDR QMLA2025102120106](https://openairdocs.org/sdr/QMLA2025102120106.md): Potentiometer · unserviceable · Oct 20, 2025 · N775AL · Bell 407 · Central Warning
  > A FADEC DEGRADE CAUTION LIGHT ILLUMINATED IN-FLT ENROUTE BACK TO HOMEBASE. AFTER NOTIFYING THE CREW OF THE EMERGENCY EVENT THAT OCCURRED, EXECUTED EMERGENCY PROCEDURE IAW BH407HP RFM, WHICH WAS TO ENSURE ACFT STABILIZED & MINIMIZING CONTROL INPUTS, FADEC RES
- [SDR QMLA2025101420104](https://openairdocs.org/sdr/QMLA2025101420104.md): Engine · overspeed · Oct 14, 2025 · N911CN · Bell 407 · Engine (Turbine/Turboprop)
  > ENGINE OVERSPEED DURING FLIGHT.

Next page: https://openairdocs.org/model/bell-407/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 = '407'
ORDER BY difficulty_date DESC
```

---
From OpenAirDocs.org, an independent open copy of FAA and NTSB data. This list as a web page: https://openairdocs.org/model/bell-407/reports