Mechanical Standby Altimeter Troubleshooting; Md 302 Standby Indicator Troubleshooting - Garmin G1000 Nxi System Maintenance Manual

Mechanical Standby Altimeter Troubleshooting

Symptom
Altimeter lighting is inoperative or
malfunctioning
Altimeter Vibrator is inoperative or
malfunctioning or fail flag is
displayed
Altitude displayed is incorrect

MD 302 Standby Indicator Troubleshooting

Symptom
Standby indicator is inoperative
Displayed altitude or airspeed
appears incorrect
Red X's on display.
Warning or Error Messages
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Recommended Action
•
Perform the Standby Instrument Electrical Power Checks in Section 9.9.
•
Remove standby altimeter per Section 6.28.2 and inspect the electrical
connector.
•
Check that electrical power is being appropriately supplied to the
instrument.
•
If the input electrical power is not adequate, troubleshoot the wiring
harness.
•
If the input electrical power is appropriate, replace the standby
altimeter or contact the manufacturer for further troubleshooting.
•
Using a pitot-static ramp tester, check altitude displayed on standby
altimeter (Note that PFD2 has error correction above 19,000 ft. and will
not be the same as the non-corrected standby altimeter.)
•
Inspect the pitot/static ports and associated equipment for faults.
•
Replace the standby altimeter or contact the manufacturer for further
troubleshooting. See Section 6.28.2 for removal instructions.
Recommended Action
•
Perform the Standby Instrument Electrical Power Checks in Section 9.9.
•
Remove standby indicator per Section 6.27.1 and inspect the electrical
connector.
•
Check that electrical power is being appropriately supplied to the
instrument.
•
If the input electrical power is not adequate, troubleshoot the wiring
harness.
•
If the input electrical power is appropriate, replace the standby
altimeter or contact the manufacturer for further troubleshooting.
•
Using a pitot-static ramp tester, check altitude displayed on standby
altimeter for accuracy.
•
Perform airspeed and altitude calibration per Section 3.19.2
•
Inspect the pitot/static ports and associated equipment for faults.
•
Replace the standby altimeter or contact the manufacturer for further
troubleshooting. See Section 6.27.1 for removal instructions.
Troubleshoot per Mid-Continent Instruments and Avionics MD 302 Installation
Manual number 9017782 available at
US 316-630-0101.
www.flysam.com/specifications/
Revision 1
or call
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