2.1 Helicopter hangar(s) on board should be positioned,
as far as is practicable, so as to preclude excessive movement and
acceleration forces. Guidance on this should be sought from the helicopter
manufacturer/operator. Where possible, the positioning of hangar(s)
should be determined through the use of computer modelling and/or
wind tunnel testing (refer also to Section 3, para 2.2.3).
2.2 The perimeter of hangar(s) and any associated
entrance or hatchway inclusive of helicopter lift arrangements should
provide a stowage/maintenance box allowing for a minimum 0.5m clearance
at any point around the helicopter and rotors when the helicopter
is in its stowed condition.
2.3 Where appropriate CCTV should be used to ensure
visibility of the aircraft at all times.