NTSB Identification: CHI98LA003.
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Accident occurred Thursday, October 02, 1997 in LAKE ELMO, MN
Probable Cause Approval Date: 04/24/1998
Aircraft: Beech E18S, registration: N916TM
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot reported that the airplane lifted off at 70 knots. After accelerating in ground effect the airplane became 'unstable in the roll axis' so he added power. He reported that the left wing tip contacted the runway approximately 3/4 the way down the runway. The pilot then added additional power at which point the left wing contacted the grass off the left side of the departure end of the runway. The pilot then reduced the power to idle and landed the airplane in the grass collapsing the landing gear. The pilot reported that the engines sounded normal throughout the accident sequence. Investigation revealed another Beech 18 had taken off on the same runway, but in the opposite direction of N916TM less than one minute prior to the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

the pilot's failure identify the unsafe condition (vortex turbulence) which existed due to departing airplane and his subsequent inability to control the airplane once encountering the turbulence.

Full narrative available

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