What must be reported if estimated off-block time changes significantly?

What must be reported if estimated off-block time changes significantly?

• A. EOBT update
• B. Fuel report
• C. ATC frequency update
• D. Weather update

Answer: (A)

When the estimated off-block time changes significantly, the EOBT must be updated. EOBT is the planned time the aircraft will leave the stand and begin movement, and keeping it current ensures ATC and flight operations stay synchronized, preserving proper sequencing in the departure flow and avoiding conflicts. Fuel, communications frequencies, and weather updates are separate considerations and are not triggered by a change in departure time.

When the estimated off-block time changes significantly, the EOBT must be updated. EOBT is the planned time the aircraft will leave the stand and begin movement, and keeping it current ensures ATC and flight operations stay synchronized, preserving proper sequencing in the departure flow and avoiding conflicts. Fuel, communications frequencies, and weather updates are separate considerations and are not triggered by a change in departure time.