In commercial aviation, what is the system where in-flight food or beverages are able to be purchases after being issue the document or electronic record by the airline?
Buy on board In commercial aviation, buy on board (BoB) is a system where in-flight food or beverages are not included in the ticket price, but are either purchased on board, or ordered in advance as an optional extra during or after booking process.
Flight progress strip A flight progress strip is a small strip of paper used to track a flight in air traffic control (ATC). While it has been supplemented by more technologically advanced methods of flight tracking since its introduction, it is still used in modern ATC as a quick way to annotate a flight, to keep a legal record of the instructions that were issued, to allow other controllers to see instantly what is happening and to pass this information to other controllers who go on to control the flight.