Plane flys from right to left on the screen

In every scene we see the airplane moving from right to left on the screen. Yet, when I look at a map and see the trip from west (Hawaii) to east (San Francisco), shouldn't the plane be flying from left to to right? It bothered me.

Another thing I probably need to re-watch is the engine problem occuring just after the gun was fired, yet nothing seemed to be fully explained.

What I did like, is that fuel was the problem. Today, Hollywood would louse things up by throwing in a bunch of problems.