AMC 25.143(d) Controllability and Manoeuvrability
ED
Decision 2007/010/R
1 The maximum forces given in the table in
CS 25.143(c)
for pitch and roll control for short term application are applicable to
manoeuvres in which the control force is only needed for a short period. Where
the manoeuvre is such that the pilot will need to use one hand to operate
other controls (such as the landing flare or go-around, or during changes of
configuration or power resulting in a change of control force that must be
trimmed out) the single-handed maximum control forces will be applicable. In
other cases (such as take-off rotation, or manoeuvring during en-route flight)
the two handed maximum forces will apply.
2 Short term and long term forces should
be interpreted as follows:–
Short term
forces are the initial stabilised control forces that result from maintaining
the intended flight path during configuration changes and normal transitions
from one flight condition to another, or from regaining control following a
failure. It is assumed that the pilot will take immediate action to reduce or
eliminate such forces by re-trimming or changing configuration or flight
conditions, and consequently short term forces are not considered to exist for
any significant duration. They do not include transient force peaks that may
occur during the configuration change, change of flight condition or recovery of
control following a failure.
Long term
forces are those control forces that result from normal or failure conditions
that cannot readily be trimmed out or eliminated.
[Amdt
25/3]