SECTION 6
WEIGHT AND BALANCE
SOCATA
MODEL TB 20
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June 30, 1988
Revision 2
6.5
DETERMINING WEIGHT AND BALANCE
GENERAL
This paragraph is intended to provide the pilot with a simple means of
determining weight and balance of his airplane with regard to its empty
characteristics and loading. The empty weight to be considered is the one
noted on the last weighing form.
The data concerning loading are given on following graphs :
– Weight / Moment envelope : see Figure
To determine airplane loading within a given flight configuration, you only
have to add up weights and moments of the various loads recorded and to
add them to empty airplane data.
These values carried forward on weight / moment envelope must give a point
within the limits drawn with continuous line.
If that is the case, loading is acceptable.
NOTE :
If moment is not directly known (optional equipment for example), determine
it multiplying weight [lbs (kg)] by arm [in. (m)].
UTILIZATION OF WEIGHT / MOMENT GRAPH
from the manual and take a pencil.
– On Figure
, place point A (1) corresponding to your empty airplane
[Our sample loading : 1866 lbs (846.5 kg) – 70.64 lb.in / 1000 (813.7 m.kg)]
– Superpose point A (1) and point A of graph
1
.
– Draw on weight / moment envelope the straight line pilot + front passenger
to get point A (2) corresponding to front seats loading.
[Our sample loading : 2 persons 340 lbs (154 kg)].
