Which of the following is NOT a phase of landing?

The correct answer is centered around the fact that "Centerline control" is not a formal phase of landing in the aviation context. The phases of landing typically refer to the critical actions and maneuvers a pilot goes through while approaching to land an aircraft.

"Flare and touchdown" is the phase where the pilot raises the nose of the aircraft prior to landing to reduce the descent rate and ensure a smooth touchdown on the runway. "Landing roll" refers to the period after the aircraft has touched down and continues moving forward on the runway until it comes to a complete stop. "Landing transition" often describes the sequence of actions taken as an aircraft prepares to make the final approach to landing, adjusting for speed, descent rate, and alignment with the runway.

While centerline control is an important aspect of the landing process, focusing on keeping the aircraft aligned with the runway centerline during the landing roll, it does not constitute a separate phase of landing on its own. Instead, it is more of a technique or skill that pilots practice throughout various phases of landing.