Recreational Pilot Licence · Mock exam

An aerodrome has a landing distance available (LDA) of 750 m. Your charts give a landing distance of 480 m at the prevailing density altitude with a 10-knot headwind. The runway surface is dry grass. Applying a safety margin of 1.43 (as required under some operator procedures), is the approach acceptable?

• A.No — 480 × 1.43 = 686 m, which exceeds the 750 m LDA
• B.No — dry grass always requires an additional 20% correction before applying any safety margin
• C.Yes — 480 × 1.43 = 686 m, which is less than 750 m LDA
• D.Yes — 480 m < 750 m LDA so it is clearly acceptable