For safe landing and takeoff, the following factors need to be carefully considered :
1. Cross-wind
2. Runway grade
3. Runway width and side clearance
4. Obstructions
(a) 1, 2 and 3 only (b) 1, 2, 3 and 4 (c) 1, 3 and 4 only (d) 2, 3 and 4 only
1. Cross-wind
2. Runway grade
3. Runway width and side clearance
4. Obstructions
(a) 1, 2 and 3 only (b) 1, 2, 3 and 4 (c) 1, 3 and 4 only (d) 2, 3 and 4 only