Agency spokesman Clint Johnson says the Alaska Airlines flight inbound from Portland, Ore., was starting to land at Ted Stevens Anchorage International Airport just after 3 p.m. Tuesday when air traffic controllers gave instructions for a "go-around."
The order was given to avoid an Ace Air Cargo Beechcraft 1900 prop-jet taking off for Sand Point from the airport's north-south runway.
Johnson says the passenger jet veered right and the cargo plane turned in the same direction. The aircraft passed within a quarter-mile of each other at the same elevation.
The Alaska Airlines jet, Flight 135, landed safely.