Quartz Mountain Aerospace L-11E N515BW accident near Omaha, Nebraska

Probable cause

The instructor pilot’s inadequate preflight fuel planning, which resulted in fuel exhaustion and a total loss of engine power.

NTSB analysis

During an instructional flight, the two pilots—an airline transport pilot giving instruction and a commercial pilot receiving instruction—flew to two airports and made an instrument approach at each airport. Upon returning to the pilots' home airport and while on another instrument approach, the engine lost all power. The pilot giving instruction assumed control of the airplane and made a forced landing in a school baseball field. During the forced landing, the airplane struck trees and a fence, causing substantial damage to a wing spar.

During a postaccident examination, a total of ½ gallon of fuel was drained from both tanks. The airplane's fuel capacity was 42 gallons, of which 40 gallons was usable. The airplane had been serviced with fuel several days before the accident, and the service technician estimated that 34 gallons of fuel was on board the airplane at the beginning of the accident flight. The pilot giving instruction reported that he had visually verified that the airplane was "full of fuel" before the flight, and he expected that there would be enough fuel for 4 hours of flight. The pilot giving instruction planned 3 hours of flight time, and the airplane's Hobbs meter indicated 3.1 hours of flight time.

Text from the NTSB. Open the NTSB docket for CEN18LA085 for the full record.