Aircraft Accident/Incident Report

Canadian, Texas 79014
Friday, March 2, 2001 15:00 CST

NTSB Narrative Summary Released at Completion of Accident

The pilot made an approach to a high hover due to the rough/uneven terrain. As the pilot was hovering the helicopter to a level area at 40 feet agl, the helicopter began to yaw to the right. The pilot stated that he hover taxied through his "rotor wash," and the helicopter encountered "loss of tail rotor effectiveness." The pilot increased collective in an attempt to takeoff, and the helicopter made "two quick revolutions." The pilot stated that he elected to land the helicopter instead of continuing with the takeoff due to power lines and rising terrain. The pilot initiated an autorotation, and the helicopter touched down on the soft ground while still rotating, collapsing the left landing skid. Subsequently, the tail rotor and main rotor blades struck the ground. The helicopter came to rest leaning toward its left side.

NTSB Probable Cause Narrative

the helicopter's encounter with loss of tail rotor effectiveness while hovering out-of-ground effect, and the pilot's failure to maintain control. A contributing factor was the soft terrain condition.

Event Information

Type of Event Accident
Event Date 3/2/2001
Event Day of the Week Friday
Time of Event 1500
Event Time Zone Central Standard Time
Event City Canadian
Event State TEXAS
Event Country --
Zipcode of the event site 79014
Event Date Year 2001
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
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 Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
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) 20
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 10669
NTSB Notification Source FAA Operations Center
NTSB Notification Date Mar 2 2001 12:00AM
NTSB Notification Time 1604
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Oct 9 2001 3:21PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Lubbock, Texas

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8356F
NTSB Number FTW01LA073
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Hughes
Aircraft Model 369D
Aircraft Series Identifier --
Aircraft Serial Number 1260063D
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Aug 3 2000 12:00AM
Airframe hours since last inspection 31.6
Airframe Hours 2600
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Knut G. Mjolhus
Aircraft Owner Street Address 8175 S. Osage
Aircraft Owner City Amarillo
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 79118
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
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 No
Departure Airport Code NONE
Departure City Amarillo
Departure State TX
Departure Country USA
Departure Time 1415
Departure Time Zone CST
Destination Same as Local Flt crash at destination city
Destination Airport Code NONE
Destination City Canadian
Destination State TX
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred Yes
Date of most recent change to record Sep 21 2001 12:32PM
User who most recently changed record MORJU
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --