# Accident 20061103023339A: Bell 407, Kalispell, MT, November 3, 2006

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 3, 2006, 20:53 local time
- Place: Kalispell, MT
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: General operating rules (Part 91)
- Operator: CXVA
- Location: 48.2228° N, 114.3272° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=48.2228&lon=-114.3272&mi=10
- Aircraft: N407KH, registered now (https://openairdocs.org/aircraft/N407KH) (OpenAirDocs)
- Registry model: Bell 407 (registry code 1182206, https://openairdocs.org/model/bell-407) (OpenAirDocs)
- Registry engine: Allison 250 SER 317HP (registry code 03011, https://openairdocs.org/engine/allison-250-ser-317hp) (OpenAirDocs)
- Reported make and model: BELL 407
- Reported engine: ALLSN 250C47B
- People aboard: 3
- Fatal injuries: 0
- Pilot flight hours: 2,950 total, 100 in this make and model, 55 in the last 90 days
- NTSB investigation: [NTSB SEA07FA014](https://openairdocs.org/ntsb/SEA07FA014) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20061103023339A

## Narrative

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

(-23) ALERT HELICOPTERS TOOK OFF FROM A HELIPAD, LOCATED AT KALISPELL REGIONAL MEDICAL CENTER, ON A FLIGHT TO BIGFORK, MONTANA, TO PICK UP A PATIENT. ABOUT 4 TO 5 MINUTES INTO THE FLIGHT, THE PILOT NOTED AN ENGINE CHIP LIGHT. THE PILOT TURNED THE HELICOPTER AROUND, TO HEAD BACK TO THE HELICOPTER PAD. THE ENGINE STARTED TO MAKE A LOT OF NOISES. JUST BEFORE THE HELICOPTER RETURNED TO THE PAD, THE ENGINE MADE A LOUD BANG. THE PILOT PROCEEDED TO PERFORM AN AUTOROTATION. THE HELICOPTER HIT A FENCE JUST BEFORE LANDING. THERE WAS A SMALL FIRE LOCATED IN THE ENGINE COMPARTMENT, WHICH WAS EXTINGUISHED BY THE CREW.

## 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 SEA07FA014](https://openairdocs.org/ntsb/SEA07FA014), Nov 3, 2006: Bell 407 (N407KH), Kalispell, MT, substantial damage. Probable cause: On-speed failure of the second stage turbine wheel as the result of engine oil starvation. The lack of maintenance oversight was a contributing factor.

## Other reports on N407KH (1)

Matched to the same aircraft by N-number and date.

- [Incident 20010714018129I](https://openairdocs.org/incident/20010714018129I), Jul 14, 2001: Bell 407 (N407KH), Olney, MT, Minor damage. (-23) On July 14, 2001, at 0002 MDT, an emergency medical service helicopter hit a tree during an approach into an off-airport landing site. VMC conditions…

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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