Jabiru J160-C, Pilot Operating Handbook

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Jabiru Aircraft SECTION 7
Model J160-C AIRCRAFT AND SYSTEMS
JP-FM-06 Revision: 0 1 2 3 1 Dec 2008 Page 7-9
NOTE
As ground & flight attitudes are essentially the same, fuel gauge indications are valid in both cases
NOTE
Flying “1 ball” out of balance (see Figure 7.14.1) causes the fuel in the tanks to slosh in to one
side by an angle of about 8°. This leads to uneven fuel feeding – 1 tank emptying before the
other. In extreme cases, this can cause fuel starvation & engine stoppage while there is significant
fuel remaining in one wing tank. Care must be taken to fly the aircraft in balance at all times.
CAUTION
In the unusual condition where the pilot suspects that one wing tank is feeding and the other wing
tank is not, the pilot must consider the fuel in the non-feeding tank as “unusable” and manage the
flight accordingly.
Figure 7.14.1 – Balance Balls
Figure 7.14.2 – Fuel Levels with 8° slope
Aircraft flying in
balance
Aircraft flying “1 ball”
out of balance
Flight starts –
both tanks full
1 tank empties
1 tank empty,
Fuel level below
pick-ups of
other tank