Aircraft Accident/Incident Report

Jackson, Wyoming 83001
Friday, March 2, 2001 12:00 MST

NTSB Narrative Summary Released at Completion of Accident

The pilot of the helicopter was looking for a group of people to be picked up at a designated point. Flying over the location, he realized that they had not yet arrived, so he decided to land at an alternate location and await their arrival. He had landed at the alternate location previously but not on the day of the accident. He said the visibility was good, but there were no shadows due to the overcast. The approach was normal, and the pilot used a small pine tree to the right front quarter of the helicopter as a reference point. As the helicopter touched down, the pilot heard a loud noise and the helicopter yawed. Believing there had been a mechanical failure, the pilot lowered the collective control and closed the throttle. Postaccident inspection revealed there had not been a mechanical failure. Rather, the pilot had not seen the snow covered slope to the left front quarter of the helicopter. The main rotor blades struck the surface of the ground and the helicopter settled into deep snow. The transmission separated from its mounts, the main rotor blades were destroyed, and the tail boom was severed.

NTSB Probable Cause Narrative

The pilot's failure to maintain adequate lateral and vertical clearance during landing. Factors were the clouds and snow-covered high terrain.

Event Information

Type of Event Accident
Event Date 3/2/2001
Event Day of the Week Friday
Time of Event 1200
Event Time Zone Mountain Standard Time
Event City Jackson
Event State WYOMING
Event Country --
Zipcode of the event site 83001
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1035 Mountain Standard Time
Direction of event from weather observation facility (degrees) 38
Weather Observation Facility ID JAC
Elevation of weather observation facility 6447
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation MST
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) 8
Air Temperature at event time (in degrees celsius) -9
Dew Point at event time (in degress fahrenheit) -15
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 0
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29.77
Density Altitude (feet) 5268
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 10232
NTSB Notification Source FAA, NW OPERATIONS CENTER
NTSB Notification Date Mar 2 2001 12:00AM
NTSB Notification Time 1630
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jul 30 2001 11:11AM
User who most recently changed record MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Salt Lake City, Utah

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9HE
NTSB Number DEN01LA060
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bell
Aircraft Model 407
Aircraft Series Identifier --
Aircraft Serial Number 53073
Certified Max Gross Weight 5250
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 7
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Feb 19 2001 12:00AM
Airframe hours since last inspection 17
Airframe Hours 1950
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Helicopter Express, Inc.
Aircraft Owner Street Address 500 Briscoe Blvd., Suite 5B
Aircraft Owner City Lawrenceville
Aircraft Owner State GA
Aircraft Owner Country USA
Aircraft Owner Zipcode 30045
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 H11A
Owner has at least one certificate --
Other Operator of large aircraft? --
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) Positioning
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City Jackson
Departure State WY
Departure Country USA
Departure Time 1020
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? No
Evacuation occurred --
Date of most recent change to record Jun 1 2001 12:36PM
User who most recently changed record MCBM
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 --