COMCO IKARUS
Maintenance Manual C42 Series
MaintenanceManual C42-
Series_Issue_VII_18.02.2014.doc
Revison No.:1 18 from 107
2.2 Weight & Balance
The aircraft should be maintained in a configuration which meets the weight
and balance criteria set out below and in the P.O.H..
If you are unsure of which certification you are flying under please refer to the
P.O.H.
Note :-For detailed weight and balance limitations you must refer to the P.O.H.
appropriate to the aircraft in question.
2.2.1 Weight and Balance Calculations
The centre of gravity is measured in mm behind the zero datum. Zero datum is
the leading edge root.
The aircraft’s empty weight and cg are derived first: Place the aircraft in a level
position on three scales, such that the stabilizer is horizontal, as shown below.
Push down on the rear fuselage, just in front of the tail, and chock the nose
wheel to level the aircraft. Record the reading of each scale.
Calculate the position of the empty cg, from the formula:
mm
bG
a ................ X
21
1
=
+
−=
(a and b are values to be measured for the specific aircraft).
x
G
1
G
2
= G
L
+ G
R