Mort Plumb, airport director at Ted Stevens Anchorage International (ANC) for the past 13 years, has resigned, effective July 1.
An Anchorage television station says that he did not give a reason for leaving in the one-sentence letter given Friday to the state Department of Transportation and Gov. Sarah Palin.
A plan to add a fourth runway to the airport drew complaints from airlines and the public, mostly aimed at Plumb.