Honeywell MK VIII Appendix B Troubleshooting Do’S And Do Not’S, Egpws Line Maintenance Manual

EGPWS LINE MAINTENANCE MANUAL

12 APPENDIX B: TROUBLESHOOTING DO’S AND DO NOT’S

DO use built-in self test levels to find the exact nature of the fault.

DO use our free WinVIEWS program to quickly access Self Test Level 1, 2, and 3 info

DO remember to look at the front panel LEDs

Green Computer OK LED means “don’t remove”

Amber External Fault LED means “don’t remove”

Red Computer means “possibly remove”

DO NOT use cockpit INOP lamps for troubleshooting

INOP indications are merely a pilot’s indication of which EGPWS functions are inactive, they are not positive indication of internal EGPWS faults. Experience shows External (non-EGPWS) faults are responsible for INOPs illumination 99% of the time.

DO NOT remove unit if front panel green Computer OK LED is illuminated

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 61 of 68