Can an airline operate with two flights in one day to the same destination with the same flight number for example
DUBAI to MUSCAT ETD 0400Z SSV 221
DUBAI MUSCAT ETD 1300Z SSV 221
I think according to IATA standard no flights should operative using the same flight number on the same day. If the flight is delayed by a day, the flight number should be changed by adding a suffix D like XX1234 to XX1234D.