Aircraft Accident/Incident Report

Cotulla, Texas 78014
Saturday, March 6, 2010 11:20 CST

NTSB Narrative Summary Released at Completion of Accident

During a safety briefing prior to the flight, the pilot mentioned that he would be operating with a limited amount of fuel so that the two-seat helicopter would be more maneuverable. Witnesses reported observing the pilot add fuel while the helicopter was running between several flights; however, no one recalled the pilot adding fuel before the last flight. The truck-mounted fuel tank that the pilot used to fuel the helicopter did not have a gauge or means to determine how much fuel was being pumped into the helicopter. The pilot was on his sixth flight of the day when the accident occurred. Approximately 10 minutes after the flight departed, several waiting passengers heard what they described as a sound that resembled a lawn mower bogging down in tall grass. The helicopter wreckage was located a short time later. A postaccident investigation showed only residual fuel in each of the helicopter’s two fuel tanks. Neither tank exhibited hydraulic deformation and no significant fuel blight was observed on the surrounding vegetation. The helicopter was being operating at a low altitude that would not allow for a successful autorotation in the event of a loss of engine power. No evidence of mechanical failure of the helicopter structure, flight controls, systems, or engine was found.

NTSB Probable Cause Narrative

A loss of engine power due to fuel exhaustion as a result of the pilot's inadequate fuel planning. Contributing to the accident was the low-altitude operating environment that would not allow for a successful autorotation after the loss of engine power.

Event Information

Type of Event Accident
Event Date 3/6/2010
Event Day of the Week Saturday
Time of Event 1120
Event Time Zone Central Standard Time
Event City Cotulla
Event State TEXAS
Event Country --
Zipcode of the event site 78014
Event Date Year 2010
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 283609N
Event Location Longitude 0992017W
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 1053 Central Standard Time
Direction of event from weather observation facility (degrees) 145
Weather Observation Facility ID COT
Elevation of weather observation facility 474
Distance of event from weather observation facility (units?) 12
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 1700
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 13
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.18
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report METAR KCOT 061653Z AUTO 13013KT 10SM BKN017 OVC070
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 29219
NTSB Notification Source Regional Operations Center Ft.
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Nov 9 2011 9:59AM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N922SH
NTSB Number CEN10FA139
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROBINSON HELICOPTER
Aircraft Model R22 BETA II
Aircraft Series Identifier --
Aircraft Serial Number 3863
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 100 Hour
Date of Last Inspection Feb 18 2010 12:00AM
Airframe hours since last inspection 27
Airframe Hours 1935
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name THOMPSON WILLIAM R
Aircraft Owner Street Address 912 BLACK ST
Aircraft Owner City UVALDE
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 78801-4229
Operator is an individual? Yes
Operator Name THOMPSON WILLIAM R
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 912 BLACK ST
Operator City UVALDE
Operator State TX
Operator Country USA
Operator Zip code 78801-4229
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
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) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Cotulla
Departure State TX
Departure Country USA
Departure Time 1110
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City Cotulla
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 3 2011 6:46PM
User who most recently changed record lebt
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --