How is the runway release time assigned to an aircraft indicated on the flight progress strip?

The runway release time assigned to an aircraft is indicated as "EDCT," which stands for Expected Departure Clearance Time. This time is critical for air traffic controllers as it helps manage and sequence departures from the runway. The EDCT is particularly important in situations where traffic congestion is expected, allowing for better flow management and reducing delays. By using this designated term on flight progress strips, controllers can clearly identify and track the specific time an aircraft is expected to be released for takeoff, ensuring that the airport operates smoothly and safely.

Other choices refer to different concepts: RTT generally refers to runway takeoff time but is not specifically used in the context of assignment on flight progress strips; ATC represents air traffic control but does not convey any specific timing information; TBD stands for "to be determined," implying that a specific release time has not yet been established.