Plain English Meaning
A simple four-part checklist that helps a pilot ask, before flying, 'Am I okay? Is the airplane okay? Is the weather and route okay? Is anything pushing me to fly when I shouldn't?'
Full Definition
A risk-assessment checklist used in aeronautical decision-making that organizes the sources of flight risk into four categories: Pilot (fitness, currency, experience), Aircraft (airworthiness, equipment, performance), enVironment (weather, terrain, airspace, lighting), and External pressures (schedules, passengers, get-there-itis). The pilot reviews each category before and during a to and decide whether the risk is .