The currently defined values for BagTagStatus. As information about bag tags, and what happens to a bag, can vary widely it is not possible to clearly define all possible transitions. All states can also be "end states" if no further information is received regarding a bag tag.
"ACTIVE" Initial state after the bag tag is generated.
"SCH" - Scheduled The initial state for scheduled flights. A known FlightLeg that is expected to depart and land according to the available information. Can transition to: FPL, ACT, CAN
"FPL" - Flight Plan Initial state for flights that aren't scheduled. The flight plan has been filed and is registered by ATM. Can transition to: FLS, SEQ, ACT, CAN
"FLS" - Flight Suspended The flight has been suspended by ATM, but can be activated at any time. Can transition to: FPL, CAN,
"SEQ" - Sequenced The flight has been sequenced by ATM. Can transition to:ACT, CAN
"ACT" - Active The aircraft is “off block”, and might be airborne. Can transition to: LAN, RER
"LAN" - Landed The aircraft has landed on the scheduled airport. End state.
"RER" - Rerouted The aircraft is in the air, but the destination airport has been changed. After landing the state will change to “DIV”. Can transition to: DIV
"DIV" - Diverted The aircraft has landed on an unscheduled airport. End state.
"DEL" - Deleted The FlightLeg appears to have been deleted/removed. This is probably the result of missing schedule change information or some other data errors. End state.
Comments
A transition to DEL (if used) and UKN can in theory happen from all states. For this reason the transitions aren't shown in the state diagram below.
UKN - Unknown Unknown indicates missing information. Usually this means that it’s time based when a state transition to unknown.
DEL - Deleted It is a matter of system design if this state is used. Deleted flights can be physically deleted (in databases), but they can also be marked as deleted and become "invisible". If “DEL” is used as a status then it is set when information arrives that explicitly deletes the flight leg, or when it can be deduced that it is an erroneous entry that should be deleted (ghost flights for instance).
