Originally Posted by
megan
Because such things as the battery container, engine mounts etc are designed to support the unchanging weight of the respective items to the certified "g" limit, going beyond the certified limit will over stress those respective mounts. Don't think there are many pilots who would appreciate their engine falling off..
The G'load neither up or down when the A/C is lighter or heavier, It's the stall speed that is affected. A heavier aircraft will stall at a higher velocity than a lighter one for the same amount of G's applied.