The specific ability of rotorcraft to take-off and land vertically, and to perform terminal manoeuvres in confined space, following routes which do not interfere with the other air traffic, makes much more efficient operations possible; and especially so in the case of large heliports as it was shown in a previous study.
Nevertheless the potential benefit of revised flight procedures (in terms of better integration with other air traffic and reduced noise impact) and the consequent development of intercity connections, will materialise only if such procedures can be shown to preserve or improve the flight safety without degrading the vehicle performance in terms of its payload carrying capability.