ENSTROM 280FX OPERATOR’S MANUAL
6-7
Rev.
11
Report No. 28-AC-020
Sep 20/17
6-3. Loading Information
1. It is the responsibility of the helicopter pilot to ensure that
the helicopter is loaded properly. Using the running basic
weight and moment from the Weight and Balance form
(Figure 6-7) and the Loading Chart (Figure 6-4), the pilot
can obtain the total weight and moment for various
loading conditions. The pilot should first calculate the
total weight and moment for zero usable fuel, as this will
show the c.g. shift with fuel burn-off. If the c.g. is within
limits, add the planned fuel load and compute the c.g. If
the c.g. is within limits, the last item to check is the lateral
offset moment using the stations in Paragraph 6-2, Step
2 and Figure 6-2.
2. Sample calculation – Longitudinal C.G.
Sample
Helicopter
S/N:_______
SAMPLE
LOADING
Arm
(in)
Weight
(lb)
Momen
t (1000
in-lb)
Weigh
t (lb)
Momen
t (in-lb)
a. Basic empty
weight from
Figure 6-7
100.7
1610.0
162.1
b. Pilot and
passengers
cabin seats
62.0
480.0
29.8
(1)
c. Baggage
compartmen
t load
135.0
20.0
2.7
(1)
d. Total weight
and moment
with zero
usable fuel
to check c.g.
shift with
fuel burn-off
(landing
condition)
92.2
(2)
2110.0
194.6
e. Usable fuel
96.0
240.0
23.0
(1)
f. Total
weight
and moment
with usable
fuel (takeoff
condition)
92.6
(2)
2350.0
(3)
217.6
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