Land of the Giants

It is highly unlikely that a miniature (to the giants, anyway) toy plane would have working controls in the cockpit.

We never really see when the kid sees the ship and finds out its location.

What happened to the laser drill they had earlier in the season? It would have been useful for cutting through the fence.

The cockpit view as the plane travels in wide circles and goes through a number of acrobatic gyrations never shows any houses or buildings, despite the fact there seems to be lots of stuff nearby (see various Within walking distance observations).

As the plane lifts off we see rocky hills in the background which have never been seen near the camp.

Why is Mark so concerned about fighting the original three toy soldiers, which are operating in a very mechanical and mindlessly repetitive manner? Fitzhugh has no trouble outmaneuvering one of them a few minutes later.