When operating an unmanned airplane, the remote pilot should consider that the load factor on the wings may be increased any time

Explanation

Load factor is the ratio of the load the wings support to the aircraft's weight; PHAK Ch. 5 explains that it rises above 1 G whenever the airplane turns, pulls up or otherwise changes its flight path, and in turbulence. In straight-and-level flight it is 1 G. Moving the CG aft changes stability and control, not the load factor, and reducing gross weight does not increase it.