Pilot Debrief

ROBINSON HELICOPTER R22 BETA near Yancey, TX — 2011-05-03

Final reportCEN11LA318
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Date
2011-05-03
Location
Yancey, TX, USA
Aircraft
ROBINSON HELICOPTER R22 BETA
Registration
N927SH
Category
Helicopter
Highest injury
None
Fatalities
0
Phase of flight
Maneuvering

Probable cause

The loss of engine power due to the unintentional closure of the fuel shutoff valve.

NTSB narrative

While maneuvering at a low altitude, the pilot heard the engine noise change and the low rpm warning horn sound. The helicopter settled to the ground and rolled onto its right side. While exiting the helicopter the pilot noted that the fuel shutoff valve had been moved 3/4 of the way towards the closed position. The pilot concluded that either the passenger's clothing or seat belt had inadvertently closed the fuel valve when the passenger had moved near the valve which resulted in the loss of engine power. Due to the low altitude, the pilot was unable to perform an autorotation in time. A postaccident examination of the helicopter did not reveal any preimpact anomalies. The helicopter was equipped with an older style fuel shutoff valve that had a handle that could be easily moved; however, a newer spring-loaded fuel shutoff valve was available that would have prevented inadvertent valve actuation.

Analysis

Primary failure mode
Human factors
First missed decision gate
Pilot could have ensured fuel valve was secure before flight to prevent inadvertent closure.

NTSB coding

Evidence available

  • 2 docket documents
View NTSB final reportView NTSB docket

Docket documents2

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