System Failures; Power Distribution; Loss Of Aeronav - BENDIXKing AeroNav 910 Pilot's Manual

SYSTEM FAILURES

NOTE
Good Airmanship
In all cases, basic airmanship should be exercised
and fundamentals utilized such as: maintain aircraft
control, analyze the situation, and take proper
action.

POWER DISTRIBUTION

Each AeroNav draws a total of 2 amps in nominal operation and
up to 4 amps under peak conditions for 28V aircraft. This rises to
4 and 8 amps respectively for 14V aircraft. The system is
designed to operate without degradation on a single power bus,
including single functioning alternator.
Each AeroNav is controlled by a pair of circuit breakers which
need to be pulled out to remove power to an AeroNav, or the top
left AeroNav knob can be pushed and held to power the unit
down (recommended method).

LOSS OF AERONAV

Failure Indication:
The simplest method of determining that a loss of an AeroNav
has occurred is a loss of both the bezel backlighting and the
display going black.
Functionality Lost:
When the failure of an AeroNav is indicated by loss of both the
bezel backlighting and the display going black, this is a total loss
of function for this unit: There will be no VHF, GPS, ADS-B
position output, deviation output, etc. In a dual AeroNav system,
loss of an AeroNav may also result in loss of some sensor data
on the remaining AeroNav if that sensor data was only wired to
the failed AeroNav and therefore cannot be shared with the
remaining AeroNav.
89000039-010
Rev 1 May 2019
AeroNav 900/880 Series Pilot's Guide
General 7-27