Cessna 170B N170CW accident near Rawlins, Wyoming

Probable cause

The pilot’s delayed decision to abort the takeoff. Contributing to the accident was the pilot's inadequate preflight planning and a high density altitude, which resulted in a runway excursion and collision with terrain.

NTSB analysis

The pilot reported that during the takeoff, the tail wheel lifted off, but the airplane would not climb out of ground effect. He stated that he used all of the runway length, and did not reduce power in time to abort the takeoff. The airplane departed the runway surface into rough terrain, which resulted in substantial damage to the rudder, horizontal stabilizer, and both elevators. The pilot stated that there were no preimpact mechanical malfunctions or failures with the airplane or engine that would have precluded normal operation. He indicated that he was based at a sea level airport, and did not take into account the high density altitude (8,600 feet), which affected the airplane’s performance.

Text from the NTSB. Open the NTSB docket for WPR13CA282 for the full record.