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Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 206 of 233
Trouble
Probable Cause
Remedy
Defective mechanism
Substitute known-good
tachometer and check reading.
Replace instrument
Defective sensor
Replace sensor
Incorrect indication
Sensor not working correctly
Replace sensor
Poor connections
Check and repair wiring &
connections.
15.9 DIGITAL DISPLAYS
Digital displays are optional in Jabiru Aircraft.
Jabiru recommend Dynon Avionics Products.
Electronic Flight Information Systems (EFIS) and Engine Monitoring Systems (EMS) are used.
EFIS systems are a muti-function flight data display. The instrument shows parameters including:
airspeed, true airspeed, outside air temperature, altitude, heading, artificial horizon, turn coordinator,
heading markers, vertical speed etc.
EMS systems are multi-function engine data displays. The instrument shows parameters including:
CHT, EGT, oil temperature, oil pressure, system voltage, RPM, fuel level, fuel flow, system voltage,
fight timers etc.
Setup of these instruments must be carried out in accordance with manufacturer’s instructions.
15.9.1 REMOVAL & INSTALLATION
Remove the instrument panel fascia as detailed above.
Disconnect the instrument.
Undo the fasteners and remove the instrument from the fascia.
For installation, reverse removal steps above.
15.9.2 TROUBLESHOOTING
The following points reflect areas which commonly cause issues with the digital instruments used in
Jabiru Aircraft. For more comprehensive installation, operation and troubleshooting data refer to the
operator’s instructions.
Table 21
– Trouble Shooting – Digital Instruments Gauges
Trouble
Probable Cause
Remedy
Instrument fails to
operate
Circuit breaker(s) open
Check master and avionics
circuit breakers. Re-set if
necessary.
Defective mechanism
Substitute known-good
instrument and check reading.
Replace instrument
Inaccurate or non-
functioning OAT /
heading data
Firmware of remote compass
does not match main instrument
Update firmware of system
OAT Sensor incorrectly set
Set OAT sensor settings per
manufacturer’s data
Heading calibration not carried
out
Perform heading calibration per
manufacturer’s instructions.