During a discontinued entry, how far should an aircraft turn from the inbound runway heading?

When an aircraft is executing a discontinued entry in the vicinity of an airport, it is essential to maintain situational awareness and ensure safety in relation to other traffic and the airport environment. Turning 90 degrees from the inbound runway heading is standard practice during a discontinued entry. This maneuver allows the aircraft to establish a safe distance from the runway, helping to prevent any potential conflicts with other arriving and departing aircraft.

Turning 90 degrees provides a clear and manageable angle to facilitate a turn that leads away from the runway while maintaining adequate separation. This practice also aligns with typical procedural guidelines established for such situations, ensuring that pilots can remain predictable in their actions and adhere to air traffic control instructions if available.

In contrast, the other options would result in either inadequate separation or potentially complex flight paths that could lead to confusion or intercepting paths with other traffic, increasing the risk during a critical phase of flight. Therefore, the choice to turn 90 degrees is grounded in established safety protocols aimed at maintaining clear and safe operations in busy airspace.