Second use of registration N703CK on a 747. From Dec 1992 to Aug 2003 it was used on 747-146 c/n 19727, and the aircraft in this photo carried it from Feb 2005 until wfu in Feb 2013. In Feb 2018 it was allocated to a third aircraft, 747-412B c/n 24226.
One of the 737-200s operated at the time in Alaska by the joint aviation departments of Conoco Phillips and BP Exploration. The aircraft were fitted with gravel kits, consisting of a gravel deflector on the nosewheel and a vortex dissipator extending out from under the air intake of each engine.