Avidyne IFD410 FMS/GPS, Pilot'S Manual

Page: 320 / 380

IFD400 Series Pilot Guide
6-28 General
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 IFD 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 IFD is controlled by a pair of circuit breakers which need to
be pulled out to remove power to an IFD, or the top left knob can
be pushed and held to power the unit down (recommended
method).
LOSS OF IFD
Failure Indication:
The simplest method of determining that a loss of an IFD has
occurred is a loss of both the bezel backlighting and the display
going black.
Functionality Lost:
When the failure of an IFD 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 IFD system, loss of an IFD
may also result in loss of some sensor data on the remaining IFD
if that sensor data was only wired to the failed IFD and therefore
cannot be shared with the remaining IFD.