Narrative:

Upon application of takeoff power the left engine developed power sooner than the right engine. Pilot lost heading control; slid to the right side of the runway into a sloping ditch. The aircraft then did a slow-speed ground loop. This resulted in damage to the main landing gear; tail landing gear; minor skin damage to the vertical stabilizer and left wingtip.

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Original NASA ASRS Text

Title: Beechcraft D18 suffered a runway excursion and minor damage when the engines did not develop power at the same rate on takeoff.

Narrative: Upon application of takeoff power the left engine developed power sooner than the right engine. Pilot lost heading control; slid to the right side of the runway into a sloping ditch. The aircraft then did a slow-speed ground loop. This resulted in damage to the main landing gear; tail landing gear; minor skin damage to the vertical stabilizer and left wingtip.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.