ummm...from what I have read he wasnt looking for a marine transport plane at all. He was out pleasure flying in his private plane near mt rainer.
Unless your talking about a different kenneth arnold?
[edit on 16-10-2005 by Whompa1]

My trip was delayed for an hour to search for a large marine transport that supposedly went down near or around the southwest side of Mt. Rainier in the state of Washington and to date has never been found.
Originally posted by Desert Dawg
The Marine transport went down on Mount Rainier December 10, 1946.
Arnold's flight of discovery took place June 24, 1947.
That's a reasonable time span between crash and search due to the snowpack on Mount Rainier.
The plane was found July 1947.
Due to the difficulty of recovering the bodies it was decided to leave them on the mountain.
A memorial was later placed on the mountain.
Complete story here: www.scn.org...
Additional information in a short interview of Kenneth Arnold by Edward R. Murrow.
Here: www.project1947.com...
Some more Kenneth Arnold information with links to further info.
Here: www.passarola.com...