What does clearance void time indicate?

What does clearance void time indicate?

• A. The aircraft must depart by that exact time
• B. The route must not be changed after that time
• C. The altitude assignment remains valid after that time
• D. The departure clearance becomes invalid if takeoff is not made before the specified time

Answer: (D)

Clearance void time marks the moment when a previously issued departure clearance becomes invalid if the aircraft has not taken off. If you reach that time without departing, you must not continue under that clearance and should obtain a new clearance or instructions from ATC. This ensures ATC can safely manage traffic and re‑clear you based on current conditions. The idea is that the departure clearance is only valid up to that specified time; if takeoff hasn’t occurred, you need fresh clearance.

Clearance void time marks the moment when a previously issued departure clearance becomes invalid if the aircraft has not taken off. If you reach that time without departing, you must not continue under that clearance and should obtain a new clearance or instructions from ATC. This ensures ATC can safely manage traffic and re‑clear you based on current conditions. The idea is that the departure clearance is only valid up to that specified time; if takeoff hasn’t occurred, you need fresh clearance.