Runway, Performance and Fuel Requirements

Runway planning means using the flight manual performance charts to find the takeoff and landing distances for the day’s actual weight, pressure altitude, temperature, wind, and runway surface, then confirming the available runway leaves a comfortable margin. Remember that high density altitude, a tailwind, an upslope, or a soft or wet surface all lengthen the distance you need. Fuel planning has a legal floor: for VFR you may not begin a flight unless, allowing for wind and forecast conditions, you can reach the first point of intended landing and then fly at normal cruise for at least 30 minutes in the day or 45 minutes at night. Those are minimums, not targets — a sensible personal reserve is larger, because headwinds, diversions, and a fuel gauge’s imprecision all eat into the margin.