On 22 Aug 2011, an AIR TRACTOR AT-502B operated by AG AIR INC was involved in an aviation accident near Matthews, MO. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain control of the airplane during takeoff. This summary draws on records from NTSB; 14 related events involving the same aircraft type or operator are linked below.
A pilot reported wind shear after liftoff caused the right wing to drop, resulting in the aircraft striking a ditch. No mechanical issues were noted.
Accident Narrative
The pilot of an aerial application aircraft reported that the airplane was loaded with 300 gallons of chemical and 100 gallons of fuel prior to departure. During takeoff, all instrument readings appeared normal. After liftoff, while still in ground effect, the pilot experienced a wind shear that caused the right wing to drop. The aircraft subsequently struck a ditch.
Pilot Report
The pilot stated that no preimpact mechanical malfunctions or failures existed that would have precluded normal operation. The recorded wind speed at an airport located 27 miles from the accident site was 7 knots at the time of the event.
Postaccident Examination
Following the accident, an examination of the aircraft revealed that the fuselage was buckled and the right wing was bent aft. No other damage was reported.
Contributing factors
Lateral/bank control — Not attained/maintainedPilot