title: CityFlyer Express
context: The management of Air Europe Express quickly started a new airline, Euroworld Airways, and began operations in May 1991 using two Shorts 360 aircraft and staff from the old Air Europe Express. The new carrier also carried on night freight and mail contracts from the defunct airline. The airline soon began flights from Gatwick to Guernsey, Antwerp and Rotterdam, for which two additional Shorts 360s were purchased. At this time, the airline approached several large carriers with a view to establishing a link, but in the event only British Airways was to show any interest, and a code share agreement was struck between the two.
question: When was CityFlyer Express airline founded?
answers: May 1991