User's Manual

Fault Name BIT Check Raise Fault/Failure Condition
Clear Fault/Failure
Condition
System ISVM ISDM GPS Operable SDU SCM
A717
INACTIVE
ARINC
573/717
Receiver
Inactive Fault
The “ARINC 573/717 Receiver fault
will be raised if the ARINC 573/717
is configured Active data and the
data is not present.
The ARINC 573/717
Receiver Fault will be cleared
if ARINC 573/717 data
resumes.
Yes OK OK
Verify ARINC 573/717
data.
Comment
L-3 Iridium SATCOM System - Built-in Test and Fault Indicators
EXTERNAL CHECKS
Indicator Description
LED Off Fault/Event
Fault Light
Discrete Output
ON OFF
Operational,
No Failure/Fault
Critical Failure
Front Panel LEDs MCDU Indicators
MCDU3 RX
INACT
MCDU 3
Receiver Port
Inactive Fault
The “MCDU 3 Receiver Port
Inactive Fault” will be raised if an
ARINC 429 Receiver Port
configured as ARINC 739 MCDU 1
has not received a recognized label
A raised “MCDU 3 Receiver
Port Inactive Fault” will be
cleared if a recognized label
with correct parity is received
for 4 seconds in a row over
No
(MCDU
3)
OK OK
Display on MCDU 3
inoperable.
Inactive
Fault
has
not
received
a
recognized
label
with correct parity for 4 seconds in
a row.
the port for which the “MCDU
1 Receiver Port Inactive
Fault
”
was raised
3)
A
429 TXn FAIL
(n = Port
Number)
ARINC 429
Transmitter
Port
Loopback
Failure
An “ARINC 429 Transmitter Port
Loopback Failure” will be raised if
an active ARINC 429 Transmitter
Port is configured as a GP Bus or
CFDS and the loopback from the
port is not detected.
A raised “ARINC 429
Transmitter Port Loopback
Failure” will be cleared if the
loopback is detected from the
port for which the “ARINC
429 Transmitter Port
Loopback Fault” was raised.
Yes FAIL OK
Verify ARINC 429 data on
indicated transmitter port.
ACARS TX
FAIL
ACARS
Transmitter
Port
Loopback
Failure
The “ACARS Transmitter Port
Loopback Failure” will be raised if
an ARINC 429 Transmitter Port is
configured as ACARS and the
loopback from the port is not
detected.
A
raised “ACARS Transmitter
Port Loopback Failure” will
be cleared if the loopback is
detected from the port for
which the “ACARS
Transmitter Port Loopback
Failure” was raised.
Yes FAIL OK
Verify ACARS transmitter
port.
A
CARS FAULT
ACARS Loop
Test Fault
The “ACARS Loop Test Fault” will
be raised if an ACARS Loop Test
does not pass on at least one
ACARS system.
Yes OK OK Verify ACARS system.
L‐3AviationRecordersProprietary