Aircraft Weight and Balance Empty-Weight CG Range

Aircraft Weight and Balance Empty-Weight CG Range

The fuel tanks, seats, and baggage compartments of
some aircraft are so located that changes in the fuel or
occupant load have a very limited effect on the balance
of the aircraft. Aircraft of such a configuration show an
EWCG range in the TCDS. [Figure 5-5] If the EWCG is
located within this range, it is impossible to legally load
the aircraft so that its loaded CG will fall outside of its
allowable range.

If the TCDS list an empty-weight CG range, and after the
alteration is completed the EWCG falls within this range,
then there is no need to compute a fore and aft check for
adverse loading.

But if the TCDS lists the EWCG range as “None” (and
most of them do), a check must be made to determine
whether or not it is possible by any combination of legal
loading to cause the aircraft CG to move outside of either
its forward or aft limits