NTSB Identification: WPR11LA386
14 CFR Part 137: Agricultural
Accident occurred Tuesday, August 16, 2011 in Hardin, MT
Aircraft: AIR TRACTOR INC AT-401, registration: N1012T
Injuries: 1 Uninjured.
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
On August 16, 2011, about 1030 mountain daylight time, an Air Tractor AT-401, N1012T, lost engine power while maneuvering to spray a field and made a forced landing near Hardin, Montana. The owner/pilot operated the airplane under the provisions of 14 Code of Federal Regulations Part 137 as an agricultural application flight. The commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed, and no flight plan was filed.
According to the pilot, he had just taken off from a private airstrip when the engine quit. He heard a loud boom and saw fire coming out of the engine compartment. The pilot reported that the engine had a 100-hour inspection about a week before the accident.
A Federal Aviation Administration (FAA) inspector responded to the accident site and reported that the debris field consisted of fire damaged hay fields about 1 mile behind the main wreckage. A visual inspection of the engine revealed that the compressor section had sustained fire damage, and the turbine section had broken and missing vanes.
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