Fuel Vents - Jabiru j160 Technical Manual

Aircraft Technical Manual
JTM001-5
8.4 Fuel Vents (all J-Series)
8.4.1 Description

For aircraft with wing tanks, ventilation is either provided by vented fuel caps or by a "sharks fin" vent
fitted to the cabin roof.

Where vented caps are used, some models incorporate a check valve to prevent excess fuel leakage
when the aircraft is parked on an angle or flown out of balance.

For aircraft with wing tanks and a header tank, all three tanks are interconnected to ensure uniform
breather pressure and even feeding from all tanks.

For aircraft with a single fuel tank fitted behind the crew seats a single vent line is fitted to the
underside of the fuselage.
8.4.2 Inspections
Required Tools:
Parts and Material:
Type of Maintenance:
Level of Certification:
Return to Service:

Vent lines can become blocked, resulting in fuel starvation of the engine. Also, the vent line, if
plugged, can result in pressure from expanding fuel pressurising the tank.

The following procedure may be used to check the vent lines for aircraft with wing tanks:
- Have an assistant hold a rubber glove or balloon over the vent tube on one cap.
- Blow into the cap vent on the other wing. If the balloon/glove inflates the breather lines between
the tanks are open and the tanks are cross-feeding.
- Correct any blockage.
This document is controlled while it remains on the Jabiru server. Once this no longer applies the document becomes uncontrolled.
ISSUE 1 2 3
Jabiru Aircraft
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
Rubber glove or balloon
Fuel line clamps
Replacement parts (if required)
Line Maintenance
L2 or LAME (A&P or LSA Repairman / Maintenance)
L2 or LAME (A&P or LSA Repairman / Maintenance)
4 5 Dated: 29th October 2014
Pty Ltd
Issued By: AS Page: 228 of 298