What happened while you were listening to the announcement?
While I was listening to the announcement,... (past simple sentence).
What happened while you were boarding the plane?
While I was boarding the plane,... (past simple sentence).
What happened while the plane was taking off?
While the plane was taking off,... (past simple sentence).
What happened while the plane was landing?
While the plane was landing,... (past simple sentence).
What happened while the plane was flying?
While the plane was flying,... (past simple sentence).
What happened while the flight attendant was talking?
While the flight attendant was talking,... (past simple sentence).
