Jabiru Aircraft
Pty Ptd
Aircraft Service Manual
Jabiru J230-C
REVISION
0
Dated : Feb 2006
Issued By: RAS
Page: 138 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
13.3.7
TROUBLE SHOOTING – AIRSPEED INDICATOR
Table 11. Trouble Shooting – Airspeed Indicator
Trouble
Probable Cause
Remedy
Pitot pressure connection not
properly connected to
pressure line from pitot tube
Test line and connections for
leaks. Repair or replace
damaged line, tighten
connections
Hand fails to response
Pitot or static lines clogged
Check line for obstructions.
Blow out lines.
Leak in pitot or static lines
Test lines and connections for
leaks. Repair or replace
damaged lines, tighten
connections.
Incorrect indication or
hand oscillates
Defective mechanism or
leaking diaphragm
Substitute known-good
indicator and check reading.
Replace instrument.
Excessive vibration
Check panel shock mounts.
Replace defective shock
mounts
Hand vibrates
Excessive tubing vibration
Check clamps and line
connections for security.
Tighten clamps and
connections, replace tubing
with flexible hose.
13.3.8
TROUBLE SHOOTING – ALTIMETER
Table 12. Trouble Shooting – Altimeter
Trouble
Probable Cause
Remedy
Static line plugged
Check line for obstructions.
Blow out lines
Instrument fails to
operate
Defective mechanism
Substitute known-good
altimeter and check reading.
Replace instrument
Hands not carefully set
Reset hands with knob
Leaking diaphragm
Substitute known-good
altimeter and check reading.
Replace instrument.
Incorrect indication
Pointers out calibration
Compare reading with known-
good altimeter. Replace
instrument
Hand oscillates
Static pressure irregular
Check lines for obstruction or
leaks. Blow out lines, tighten
connections.