Jabiru Aircraft
Pty Ptd
Aircraft Service Manual
Jabiru J230-C
REVISION
0
Dated : Feb 2006
Issued By: RAS
Page: 139 of 171
L:\files\Technical_manuals\J230_J430\J230.J430_Work_files\J230-C_Tech_Rev_1.doc
Print Date: 14/01/2009 4:41:00 PM
Trouble
Probable Cause
Remedy
Leak in airspeed or vertical
speed indicator installations
Check other instruments and
system plumbing for leaks.
Blow out lines, tighten
connections
13.3.9
TROUBLE SHOOTING – VERTICAL SPEED INDICATOR (OPTION)
Table 13. Trouble Shooting – Vertical Speed Indicator (Option)
Trouble
Probable Cause
Remedy
Static line plugged
Check line for obstructions.
Blow out lines.
Instrument fails to
operate
Static line broken
Check line for damage,
connections for security.
Repair or replace damaged
line, tighten connections.
Partially plugged static line
Check line for obstructions.
Blow out lines
Ruptured diaphragm
Substitute known-good
indicator and check reading.
Replace instrument
Incorrect indication
Pointer off zero
Reset pointer to zero
Partially plugged static line
Check line for obstructions.
Blow out lines
Leak in static line
Test lines and connections for
leaks. Repair or replace
damaged lines, tighten
connections.
Pointer oscillates
Leak in instrument case
Substitute known-good
indicator and check reading.
Replace instrument.
Excessive vibration
Check shock mounts.
Replace defective shock
mounts.
Hand vibrates
Defective diaphragm
Substitute known-good
indicator and check for
vibration. Replace instrument.
13.3.10
PITOT TUBE ALIGNMENT
Refer to Figure 56
For correct airspeed indication, pitot tube must be properly aligned. Open end of tube
must be perpendicular to longitudinal axis of the aircraft. Refer to Figure 56 for alignment
details.
