A new approach is presented for the computation of continuation diagrams. I
t differs in principle from the usual approach of continuing the equilibriu
m points by considering one or more of the controls as continuation paramet
ers and with the other controls held fixed. The novel approach addresses th
e problem of night dynamics from the pilot point of view by allowing all th
e controls to be freely determined. At the same time some of the states are
so constrained that along the continuation curve a particular pilot trim c
ondition is maintained.