# Accident 20140503006339A: Bell 407, Telluride, CO, May 3, 2014

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 3, 2014, 11:30 local time
- Place: Telluride, CO
- Damage: Substantial damage
- Phase of flight: Maneuver
- Operating rules: Air taxi and commuter (Part 135)
- Operator: JAPA
- Location: 37.8350° N, 107.8817° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.8350&lon=-107.8817&mi=10
- Aircraft: N407MH, a cancelled registration (https://openairdocs.org/deregistered/N407MH-2018-02-14) (OpenAirDocs)
- Registry model: Bell 407 (registry code 1182206, https://openairdocs.org/model/bell-407) (OpenAirDocs)
- Registry engine: Allison 250-C47 series (registry code 03029, https://openairdocs.org/engine/allison-250-c47-series) (OpenAirDocs)
- Reported make and model: BELL 407
- Reported engine: ALLISON 250-C47B
- People aboard: 3
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot, flight instructor
- Pilot flight hours: 4,300 total, 18 in this make and model, 94 in the last 90 days
- NTSB investigation: [NTSB CEN14FA232](https://openairdocs.org/ntsb/CEN14FA232) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20140503006339A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

WHEN MANEUVERING A RIGHT HAND TURN, THE PILOT HEARD A CHANGE IN ENGINE NOISE AND FELT A SLIGHT VIBRATION.  HE THEN SAW AN ENGINE CHIP LIGHT, FOLLOWED BY A FADEC DEGRADED LIGHT.  HE SET UP FOR LANDING WITH POWER, HEADING FOR A CLEARING IN MOUNTAINOUS TERRAIN APPROXIMATELY 10200 ASL.  ENGINE RPM WENT TO 0 APPROXIMATELY 150' AGL, AND PILOT STATED HE MAINTAINED AIRSPEED AND COMPLETED AN AUTOROTATION INTO DEEP SNOW.  THE AIRCRAFT IMPACTED HARD, SLID FOR A FEW FEET AND THEN ROLLED ONTO LEFT SIDE.  SUBSTANTIAL DAMAGE TO ROTOR SYSTEM, TRANSMISSION DECK, AND THE TAILBOOM WAS SEVERED FROM FUSELAGE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN14FA232](https://openairdocs.org/ntsb/CEN14FA232), May 3, 2014: Bell 407 (N407MH), Telluride, CO, substantial damage. Probable cause: The failure of the power turbine thrust (No. 5) bearing due to overheating as a result of oil starvation, which led to the engine failure. Also causal to the accident was an undocumented repair to…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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