This is meant to be thought provoking question rather than a heated discussion… 
Suppose a group of people are on a long trans-oceanic flight. …one of those 11 hours deals. And lets further suppose that the timing and direction of the flight are such that it starts on a Saturday and ends late Sunday/early Monday. Lets further suppose the pilot, co-pilot, and navigator are Catholic. Many passengers and all of the flight attendants are Catholic. And there happens to be a Catholic priest on board.
Because there is no opportunity to attend Mass before or after the flight the priest decides to say one Mass on board the plane. (We will assume the priest has whatever permission necessary to do so.)
Now here is the question… Can the passengers and crew be said to have attended Mass? Have they met their Sunday obligation?
Obviously at least one member of the flight crew must stay in the cockpit at any given time. The flight attendants must be available to attend to the needs of passengers Many of the passengers will not be follow the action of the Mass; they are most likely to be in totally different compartments. Those who are not interested in attending Mass would still have to be able to have access to whatever services and forms of entertainment would be available at that time.
Suppose a group of people are on a long trans-oceanic flight. …one of those 11 hours deals. And lets further suppose that the timing and direction of the flight are such that it starts on a Saturday and ends late Sunday/early Monday. Lets further suppose the pilot, co-pilot, and navigator are Catholic. Many passengers and all of the flight attendants are Catholic. And there happens to be a Catholic priest on board.
Because there is no opportunity to attend Mass before or after the flight the priest decides to say one Mass on board the plane. (We will assume the priest has whatever permission necessary to do so.)
Now here is the question… Can the passengers and crew be said to have attended Mass? Have they met their Sunday obligation?
Obviously at least one member of the flight crew must stay in the cockpit at any given time. The flight attendants must be available to attend to the needs of passengers Many of the passengers will not be follow the action of the Mass; they are most likely to be in totally different compartments. Those who are not interested in attending Mass would still have to be able to have access to whatever services and forms of entertainment would be available at that time.