When can Aircraft B be released after Aircraft A has departed from Runway 8 and turned left heading 060?

• A. After 1 minute
• B. After 2 minutes
• C. Immediately
• D. After 5 minutes

Answer: (C)

Releasing Aircraft B immediately after Aircraft A departs from Runway 8 and turns left to a heading of 060 is correct based on standard air traffic control separation and departure procedures. When Aircraft A makes the turn and establishes a heading that allows for lateral separation, the runway is considered clear for the next departure.

In such scenarios, the key aspect is ensuring that there is sufficient lateral separation between departing aircraft. Aircraft B can be released without delay since the turn to heading 060 places Aircraft A on a path that does not conflict with Aircraft B's departure route.

The other options suggest varying amounts of delay which could imply unnecessary waiting time. For instance, releasing Aircraft B after a minute or more would not be warranted if the airspace is clear and safe for departure. Similarly, a longer delay like five minutes would be excessive when immediate release can safely accommodate the flow of air traffic. Therefore, the decision to release Aircraft B immediately optimizes efficiency while maintaining safety.