Mccarley Field Airport
Aircraft Accident/Incident Report

Blackfoot, Idaho 83221
Tuesady, June 21, 2011 16:21 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that, during takeoff for a local aerial application flight, the airplane became airborne slightly beyond the normal rotation point. As the airplane approached the departure end of the runway, the engine did not develop enough power to maintain flight. The pilot stated that due to the amount of runway remaining, he was unable to abort the takeoff. He then lowered the nose in an effort to gain more airspeed but did not jettison the chemical load in the hopper. Subsequently, the airplane struck multiple trees beyond the departure end of the runway and came to rest upright. Company personnel reported that, per the pilot's request prior to the accident flight, the airplane was loaded with an amount of chemical that was similar to amounts that he had been using throughout the day. Postaccident examination of the engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. Signatures observed on the engine's internal components exhibited characteristics of the engine developing power at the time of impact, likely in a high power range. The airplane was found to be within weight and balance limitations at the time of the accident. The reason for the engine to not develop sufficient power for the airplane to maintain a positive rate of climb could not be determined.

NTSB Probable Cause Narrative

A partial loss of engine power during takeoff for undetermined reasons.

Event Information

Type of Event Accident
Event Date 6/21/2011
Event Day of the Week Tuesday
Time of Event 1621
Event Time Zone Mountain Daylight Time
Event City Blackfoot
Event State IDAHO
Event Country --
Zipcode of the event site 83221
Event Date Year 2011
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 431233N
Event Location Longitude 1122058W
Event Location Airport McCarley Field Airport
Event Location Nearest Airport ID U02
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 4488
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1553 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 211
Weather Observation Facility ID PIH
Elevation of weather observation facility 4452
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Few
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) 26
Dew Point at event time (in degress fahrenheit) 3
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.08
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 29736
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 18 2012 11:02AM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1515P
NTSB Number WPR11LA278
Missing Aircraft Indicator --
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 AIR TRACTOR INC
Aircraft Model AT-502
Aircraft Series Identifier --
Aircraft Serial Number 502-0149
Certified Max Gross Weight 8000
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 7 2011 12:00AM
Airframe hours since last inspection 95
Airframe Hours 5518
ELT Installed Unknown
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name WELLS FARGO BANK NORTHWEST
Aircraft Owner Street Address --
Aircraft Owner City Salt Lake City
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84111
Operator is an individual? No
Operator Name Vector Disease Control International
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1320 Brookwood Drive, Suite H
Operator City Little Rock
Operator State AR
Operator Country USA
Operator Zip code 72202
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 Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code U02
Departure City Blackfoot
Departure State ID
Departure Country USA
Departure Time 1621
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code U02
Destination City Blackfoot
Destination State ID
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 22 2012 3:22PM
User who most recently changed record stam
Since inspection or accident Time of Accident
Event Location Runway Number and Location 01
Runway Length 4314
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --