EOBT/TOBT can be used to indicate the estimated time of wheel chock removal (estimated pushback time)
ETOT can be used to indicate the estimated takeoff time
ELDT: Estimated Landing Time
EIBT: Estimated time to engage the wheel chocks
(The latter two are used less frequently)
(The EN interface can be modified; currently, EN displays "T Pushback" / "T Takeoff")
