Aircraft Accident/Incident Report

Idaho Falls, Idaho 83402
Monday, July 14, 1997 12:20 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that upon making the last spray pass of a potato field he noted a low fuel state and turned back towards his refueling truck. At an altitude of 10-15 feet above ground and an airspeed of approximately 25 knots, the engine lost power. The pilot reported that 'when it quit I did not have the time to do any auto(rotation). It stopped and I hit the ground.' An FAA inspector confirmed the lack of fuel on board the aircraft following the accident. The height-velocity diagram for the Bell 47G-3B placed the aircraft on the boundary of the envelope for a successful autorotation at the altitude and speed at the time of the power loss.

NTSB Probable Cause Narrative

The pilot mismanaged his fuel supply which led to fuel exhaustion and subsequent loss of engine power. Factors contributing to the accident were the lack of adequate altitude and airspeed to successfully execute an autorotation.

Event Information

Type of Event Accident
Event Date 7/14/1997
Event Day of the Week Monday
Time of Event 1220
Event Time Zone Mountain Daylight Time
Event City IDAHO FALLS
Event State IDAHO
Event Country --
Zipcode of the event site 83402
Event Date Year 1997
Event Date Month 7
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1246 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID IDA
Elevation of weather observation facility 4741
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 60
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1578
NTSB Notification Source --
NTSB Notification Date Jul 14 1997 12:00AM
NTSB Notification Time 1217
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:26PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8494E
NTSB Number SEA97LA168
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bell
Aircraft Model 47G-3B
Aircraft Series Identifier 47G-3B
Aircraft Serial Number 2716
Certified Max Gross Weight 2850
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 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jul 17 1997 12:00AM
Airframe hours since last inspection 7
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name HALL, ROGER & MICHAEL
Aircraft Owner Street Address 895 9TH STREET
Aircraft Owner City IDAHO FALLS
Aircraft Owner State ID
Aircraft Owner Country
Aircraft Owner Zipcode 83404
Operator is an individual? --
Operator Name WOOD, MILTON, H.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 895 NINTH STREET
Operator City IDAHO FALLS
Operator State ID
Operator Country
Operator Zip code 83404
Operator Code E7GG
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 Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
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 Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --