ATPL: What is the minimum field length required for the worst wind situation, landing a twin jet aeroplane with the anti-skid inoperative?Elevation: 2000 ftQNH: 1013 hPaLanding mass: 50 000 kgFlaps: as required for minimum landing distance Runway condition: dryWind:Maximum allowable tailwind: 15 kt Maximum allowable headwind: 50 kt