1.   Retiring controllers can be replaced, of course, and officials at the FAA said there are plenty of applicants.

2.   The utility companies are successfully replacing embedded controllers that may cause problems.

3.   During the strike, the controllers were replaced by instructors at the air traffic controllers training school.

4.   On when the transitional controller will be replaced by a permanent body, Moggie said it will depend on how the movement of the Multimedia Convergence issue materialises.