Jabiru j250 - 11.9 DIGITAL DISPLAYS

Aircraft Technical Manual
Jabiru Aircraft Pty Ltd
JTM001-5
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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Dated: 29th October 2014
Issued By: AS
Page: 261 of 298
11.9 Digital Displays (all J-Series)
 Digital displays are optional in Jabiru Aircraft.
 Jabiru recommends 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.
11.9.1 Removal & Installation
Required Tools:
Tools as required in Section 11.2.2
Screwdrivers
Parts and Material:
N/A
Type of Maintenance:
Line Maintenance
Level of Certification:
L2 or LAME (A&P or LSA Repairman / Maintenance)
Return to Service:
L2 or LAME (A&P or LSA Repairman / Maintenance)
 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.
11.9.2 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 11-7 – 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.
Oil pressure inaccurate /
fluctuating
Poor quality earth connection
between display and engine
Check connection, replace /
improve as required.