Airport Engineering
The size of landing area for multi engine helicopters operating under 1 FR conditions is

60 m × 120 m
30 m × 30 m
22.5 m × 22.5 m
22.5 m × 30 m

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Airport Engineering
In instrument landing system

L.O.M. and Localizer are installed on one side and L.M.M. on the other side
Localizer and L.M.M. are installed on one side and L.O.M. on the other side
L.O.M. and L.M.M. are installed on one side and Localizer antenna on the other side
None of these

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