Question id 142 - Communication - Quiz BPL Gas - Balloon Pilot License

Information concerning the safety of an aircraft, a watercraft or some other vehicle or person in sight.
Information concerning aircraft and their passengers which face a grave and imminent threat and require immediate assistance
Information concerning urgent spare parts which are required for a continuation of flight and which have to be ordered in advance.
Information concerning the apron personell and which imply an imminent danger to landing aircraft