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Landing a relativistic plane

In introductory relativity courses, the relativity of simultaneity is often introduced by showing that if two clocks on a uniformly moving relativistic plane are synchronised by the pilot, then they will not be synchronised in the fame of the ground. The author's beginning students have repeatedly asked: What happens if the pilot lands the plane? Mustn't the pilot and ground based observer, now in the same frame, agree? If so, on what do they agree? The article answers these questions consistently from two different points of view. Firstly, special relativity is used to calculate how the deceleration affects the plane's clocks during landing for a ground observer. Secondly, the principle of equivalence is used to calculate how the deceleration affects the clocks for an observer on the plane. Since both points of view use only elementary techniques, this calculation could be used to illustrate and reinforce concepts normally included in an introductory course.