Aircraft Accident/Incident Report

Yancey, Texas 78886
Tuesady, May 3, 2011 11:15 CDT

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

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

Event Information

Type of Event Accident
Event Date 5/3/2011
Event Day of the Week Tuesday
Time of Event 1115
Event Time Zone Central Daylight Time
Event City Yancey
Event State TEXAS
Event Country --
Zipcode of the event site 78886
Event Date Year 2011
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 291055N
Event Location Longitude 0991222W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1051 Central Daylight Time
Direction of event from weather observation facility (degrees) 10
Weather Observation Facility ID KHDO
Elevation of weather observation facility 930
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 20
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 50
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 13
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) 30.43
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report METAR KHDO 031551Z AUTO 05013G20KT 10SM CLR 20/M01
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 28989
NTSB Notification Source SAT FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Nov 4 2011 7:58PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N927SH
NTSB Number CEN11LA318
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROBINSON HELICOPTER
Aircraft Model R22 BETA
Aircraft Series Identifier --
Aircraft Serial Number 3880
Certified Max Gross Weight 1370
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 18 2011 12:00AM
Airframe hours since last inspection 88
Airframe Hours 2931
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type C126
Aircraft Owner Name PRENTICE AVIATION INC
Aircraft Owner Street Address 3634 PRITCHARD RD
Aircraft Owner City BOKCHITO
Aircraft Owner State OK
Aircraft Owner Country USA
Aircraft Owner Zipcode 74726-3101
Operator is an individual? No
Operator Name PRENTICE AVIATION INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 3634 PRITCHARD RD
Operator City BOKCHITO
Operator State OK
Operator Country USA
Operator Zip code 74726-3101
Operator Code --
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Aerial Observation
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Yancey
Departure State TX
Departure Country USA
Departure Time 1045
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City Yancey
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 29 2011 12:51PM
User who most recently changed record aguj
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --