Automated takeoff performance systems provide for operators an optimized solution that is designed to ensure safety and improve economics. Before each takeoff, pilots input data into these systems to determine the optimal thrust and flap setting for a given runway and environmental condition. These solutions guarantee regulatory runway and climb performance while reducing engine wear and saving fuel. The problem, as with other automated systems, is that flight crews are susceptible to errors that can lead to a risk of a runway overrun due to a takeoff attempt with an improper thrust and/or misconfigured flap setting.
Recent runway overrun or “late takeoff” events highlight some of the risks associated with using automated takeoff performance systems. In August 2016, a Boeing 777-300ER had a late takeoff event at London Heathrow. The aircraft became airborne with only 318 feet of runway remaining and crossed the end of the runway at a height of less than 17 feet. Later investigation revealed that the crew selected the wrong runway/intersection in the Onboard Performance Tool (OPT), resulting in a lower-than-required takeoff thrust setting.
Pilot, safety expert, consultant, and aviation journalist Stuart “Kipp” Lau writes about flight safety and airmanship for AIN.
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