Beech P35 N8518M accident near Englewood, Colorado

Probable cause

The pilot’s failure to abort the takeoff after the airplane failed to gain adequate airspeed.

NTSB analysis

The pilot reported that he focused "solely on the airspeed" indicator during takeoff and that the airplane was slow to gain airspeed. He observed the airspeed needle enter the white band and then the bottom of the green band by the end of the runway. The airplane became airborne but did not gain altitude. The pilot saw the perimeter fence, increased the pitch of the airplane, and then heard the stall warning sound. The airplane hit the fence and then impacted the ground, which resulted in substantial damage to the wings and fuselage. The postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.

Text from the NTSB. Open the NTSB docket for CEN12LA252 for the full record.