CHAPTER 6 EXPANDED EMERGENCY AND ABNORMAL PROCEDURES
Page 6-10
091-00027-001 REV A Evolution Backup Display Pilot’s Guide
Page 6-11
091-00027-001 REV A
Evolution Backup Display Pilot’s Guide
NOTE
When operating on the internal battery, the display
backlight intensity is limited to a value of 70.
NOTE
Setting the brightness to a value of greater than 40%
will reduce the battery operation time to less than 30
minutes.
CAUTION
During situations where a high electrical demand is placed on the aircraft electrical
system, electrical transients that cause aircraft voltage to drop below 9.0V momentarily
or 12.3V for 2 minutes (14V electrical system) or 18.0V momentarily or 24.6V for 2 minutes
(28V electrical system) will cause the EBD display to automatically switch to its internal
battery.
This will be accompanied by an ON BAT annunciation.
The ON BAT annunciation should extinguish shortly after the electric transient demand
goes away. If the ON BAT annunciation does not extinguish, then an aircraft power source
failure has most likely occurred.
WARNING
When fully charged, the internal battery will power the EBD to provide ADAHRS and
emergency RSM GPS position (if enabled) for approximately 30 minutes. When continued
safe operation depends on the EBD’s primary ight data, UNRESTORABLE LOSS OF
EXTERNAL POWER IS AN EMERGENCY SITUATION. The pilot should follow the
electrical failure checklist in the Aircraft Flight Manual land as soon as possible.
091-00027-001 Rev A EBD Pilots Guide V&H .indb 10 8/27/14 8:51 AM
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