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The size of landing area for multi engine helicopters operating under 1 FR conditions is
22.5 m × 22.5 m
30 m × 30 m
22.5 m × 30 m
60 m × 120 m
22.5 m × 22.5 m
30 m × 30 m
22.5 m × 30 m
60 m × 120 m