I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 78
FOR SIMULATION USE ONLY – NOT A TRAINING AID
The IACs also provide REPEAT cockpit control. The MFDs may operate in repeat
mode, such that the rear cockpit MFD displays are slaved to the front cockpit and
vice versa. The IACs also receive data from these subsystems:
trim aid device (TAD),
flight data recorder (FDR), and
The pitot static system.
The integrated avionics system enters into the initialization state and establishes a
default operating condition upon application of power. If a failure is detected, the
integrated avionics system component enters the fail state, otherwise it enters the
normal state where all functional modes are available.
Integrated avionics system components enter the test state when an initiated built-
in test (IBIT) is conducted.
Full IAC 1 failure consists of complete loss of IAC 1. This includes the loss of IAC
external power, failure of IAC power supply, and/or complete failure of all
PEN/FMS/HUM/GPS cards.
Full IAC failures are indicated as cautions IAC1 FAIL on the EICAS.
When IAC 1 fails, the following events occur (not in order):
Automatic exit from REPEAT mode
HUD repeater image does not contain a HUD camera image, only the HUD
symbology
The DVR/DTS stops all the video and audio recording
The DTS has no capability to load or download data between DTS cartridge
and IAC 1
Both cockpits display video from IAC 2
FWD Up Front Control Panel (UFCP) displays AFT UFCP presentation
No communication between PEN, FMS, and HUM data for synchronization
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