Cancellation - to basic schedule Partial schedule update - to basic schedule Request for a repeat of schedule information Complete new schedule information - basic schedule Event, non-flight movement related Modification. Update of UTC local time variations Flight information movement function Flight information diversion function Partial schedule update - ad hoc changes/additions/deletions to schedule Complete new schedule information for a flight number range - basic schedule MCT Query MCT Complete Database Replacement MCT Complete Replacement for a single airport as defined in the ODI segment MCT Add detail item MCT Change detail item MCT Delete detail item MCT Replace all detail items at the airport defined in the ODI segment for the carrierdefined in the ARR/DEP" segment Slot Preliminary Allocation List Slot/Schedule Availability Query Slot Clearance Request/Reply Slot Historical and Non-Historical Allocation List Slot/Schedule Information Enquiry Slot/Schedule Information Request/Reply Schedule Movement Advice Waitlist Information Enquiry Waitlist Information Request/Reply