Pilot: Santiago Delivery, Speedbird two four six, stand one nine, information Foxtrot, request clearance to London Heathrow.
Controller: Speedbird two four six, cleared to London Heathrow via the BELEN one GOLF departure, initial climb six thousand feet, squawk three four one two, QNH one zero one four.
Pilot: Cleared to London Heathrow via BELEN one GOLF, initial climb six thousand, squawk three four one two, QNH one zero one four, Speedbird two four six.