It is the means by which a helicopter can be landed safely in the event of an engine failure, so all helicopters must have this capability in order to be certified.
All helicopters must have this capability in order to be certified. It is the means by which a helicopter can be landed safely in the event of an engine failure.
It is the means by which a helicopter can be landed safely in the event of an engine failure. All helicopters must have this capability in order to be certified.
It is the means by which a helicopter can be landed safely in the event of an engine failure. All helicopters must have this capability in order to be certified.