Aircraft Technical Manual
Jabiru Aircraft
Pty Ltd
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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ISSUE
1
2
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5
Dated: 29th October 2014
Issued By: AS
Page: 51 of 298
a thorough flushing with clean water. Remove battery and clean residue from aircraft. Clean cable
and terminal connections with a wire brush, then coat with petroleum jelly before connecting cables.
Replace flexible oil & fuel line in engine compartment every 2 years or when visible deterioration
(cracking, hardening) occurs.
CAUTION
If the aircraft is using a fuel blend containing alcohol the operator must be aware that flexible fuel
lines will generally age faster when exposed to alcohol. Additional care must be taken to monitor
fuel system condition.
5.10 Fuel System 100-Hourly
As all possible circumstances cannot be listed here, the following is provided as guidance only. A
critical, trained eye is required and inspections should include, but not be limited to, the following.
The fuel tanks should be filled immediately after flight to lessen condensation of moisture.
Service Letter JSL007 contains a great deal of detailed information on the suitability, operating
requirements and storage requirements of different fuels. Operators and maintainers must
familiarize themselves with this information and follow the guidelines given in the letter.
Fuel drains must be inspected to ensure they are functioning correctly and are not leaking. Fuel
drains are located:
-
For aircraft with wing tanks, in each of the Left & Right hand wing fuel tanks. The drains are
located on the underside of the wing, near the wing root.
-
For aircraft with wing tanks, a third drain is located under the fuselage. This drain may be under
the passenger seat, just aft of the main undercarriage or just aft of the sound curtain (the rear of
the cabin)
– depending on the model and configuration.
-
Some aircraft with wing tanks may also be equipped with gascolators located inside the cabin just
aft of the front doors.
-
Aircraft with the main fuel tank inside the cabin are equipped with a fuel drain on the underside of
the fuselage
– immediately under the fuel tank.
Fuel filters must be checked and replaced at the intervals noted.
The carburettor bowl must be removed and checked for contaminants. While the bowl is removed,
inspect the float level and check for any foreign objects in any of the jets.
Check the electronic fuel boost pump functions and produces a sufficient flow rate.
Inspect fuel lines and connectors. Check for hardening, cracking, leakage, correct radius,
obstruction, foreign matter and any other signs of deterioration.
Check the condition of fire sleeves. Ensure that fire sleeves are long enough to completely cover all
flexible hoses
– i.e. they must extend past the hose clamp to the very tip of the hose
Where equipped, check that the fuel line sheaths inside cabin are in place and secure at their
attachments. Check for any tears, rips or signs of fuel leakage / pooling.
Check the function of fuel tank caps. Check that the required placards are in place and in good
condition.
Where equipped, verify the function of the ball valve in the fuel tank vent cap (air should flow out
easily at slow flow rates but be blocked at high flow rates. Air should be able to flow into the tank
easily at all times.)
Visually inspect the fuel tanks (in-situ) to check for staining and other signs of leakage or damage. If
equipped, check the condition of the lines and fittings inside the wing root to determine if there is any
leakage.
Check the function of the fuel shut-off valve(s). Ensure that all placards are in place and in good
condition.
