How much time after the scheduled takeoff time is the chock time unless previously coordinated with maintenance?

In aviation operations, chock time refers to the duration after the scheduled departure when an aircraft is still on the ground and not in the air. This time is crucial for maintaining an efficient flight schedule and coordinating with ground services. The standard chock time, unless otherwise coordinated with maintenance, is a specific duration that helps ensure any necessary checks or repairs are completed efficiently.

The correct choice of 1+45 indicates that the chock time is set for one hour and forty-five minutes past the scheduled takeoff time without prior arrangements made with maintenance. This timeframe provides a buffer for pilots and crew to prepare for departure effectively, while also taking into account the potential for delays due to unforeseen issues that could require maintenance attention.

Understanding this timeframe is essential for flight planning and operational performance, ensuring that the aircraft and crew are ready to depart on time, while still accommodating essential checks.