Pilot Debrief

BELL 47D1 near Carrollton, OH — 2008-06-01

Final reportCHI08LA151
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Date
2008-06-01
Location
Carrollton, OH, USA
Aircraft
BELL 47D1
Registration
N74898
Category
Helicopter
Highest injury
None
Fatalities
0
Phase of flight
Cruise

Probable cause

The airframe vibration for an undetermined reason.

NTSB narrative

The pilot reported that he had departed the airport and had flown about 8 miles when the helicopter's cyclic began to shake violently during cruise flight. When he attempted to land, he could not get the helicopter to hover so he attempted a run-on landing. The pilot reported that the helicopter's skid caught some high grass or rough terrain and then the helicopter rolled on its side. The pilot reported that the helicopter was operating normally prior to the accident. The inspection of the helicopter revealed no preexisting anomalies.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have returned to airport after first signs of cyclic control shaking.

NTSB coding

Evidence available

  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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