On April 19, 1995, a Cessna T337G (registration N4KP) was involved in an aviation accident near Coffeyville, KS. Investigators recorded the probable cause as: the pilot's failure to abort the takeoff during an excessive takeoff roll. Factors were the loss of power on the number two engine which occurred for an undetermined reason, the pilot's disregard of the takeoff checklist, and the 25 degree flap setting. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
Takeoff roll of about 4,000 feet, wings rocked during climb, cleared trees by 20-30 ft, then turned left, descended, left wing impacted terrain, post-impact fire. No preimpact mechanical malfunction; number two propeller horizontal, no damage, engine normal, flaps 25 degrees. Single engine performance calculations show 3,636 ft ground run for 4,700 lb airplane.
Introduction
The investigation report described a takeoff and climb event that resulted in a post-impact fire. Witnesses observed the airplane's takeoff roll and initial climb.
Witness Observations
According to witnesses, the airplane used approximately 4,000 feet of runway during the takeoff roll. During the initial climb, the wings were seen rocking. The airplane cleared a row of trees at the end of the runway by an estimated 20 to 30 feet. Subsequently, the airplane turned slightly to the left, began to descend, and the left wing impacted the terrain. A post-impact fire ensued.
Investigation Findings
The investigation found no evidence of preimpact mechanical malfunction. The number two propeller was found in a horizontal position, and no impact damage was noted on either propeller blade. The engine was tested and operated normally. The flaps were determined to have been extended to 25 degrees.
Single Engine Performance
Single engine performance calculations were performed for a 4,700-pound airplane with the flaps extended to 25 degrees. These calculations indicated a takeoff ground run of 3,636 feet.
Frequently asked questions
What happened in the 19 Apr 1995 Cessna T337G accident near Coffeyville, KS?
Takeoff roll of about 4,000 feet, wings rocked during climb, cleared trees by 20-30 ft, then turned left, descended, left wing impacted terrain, post-impact fire. No preimpact mechanical malfunction; number two propeller horizontal, no damage, engine normal, flaps 25 degrees. Single engine performance calculations…
What aircraft was involved and where did it happen?
The accident on 19 Apr 1995 involved a Cessna T337G, registration N4KP, at Coffeyville, KS.
What was the probable cause of the accident?
the pilot's failure to abort the takeoff during an excessive takeoff roll. Factors were the loss of power on the number two engine which occurred for an undetermined reason, the pilot's disregard of the takeoff checklist, and the 25 degree flap setting.