A domestic air carrier airplane lands at an intermediate airport at 1815Z. What is the latest time it may depart without specific authorization from an aircraft dispatcher?

The latest time that a domestic air carrier airplane may depart from an intermediate airport without specific authorization from an aircraft dispatcher is 1915Z. The reasoning behind this involves understanding the regulations governing flight operations and the required rest times for crew members.

According to the guidelines, a flight must depart within a specified timeframe after landing to ensure compliance with regulations regarding crew duty time and scheduled flight operations. Typically, this period is set at two hours after the landing time when no specific authorization is given.

In this case, the airplane lands at 1815Z. If you add two hours to this time, you reach 1915Z. Departing after this time would necessitate obtaining specific authorization from an aircraft dispatcher, as this could potentially violate crew duty regulations or operational safety protocols designed to ensure the flight’s compliance with federal regulations.

Thus, the correct answer is 1915Z, as it reflects the maximum allowable departure time without requiring further authorization, ensuring crew compliance and operational safety.