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Interpretation of the messages
Interpretation of the maintenance-related messages is made delicate by the following factors:
• this type of message is only transmitted once, at the first occurrence. It can only indicate
that a fault has appeared. If the fault has disappeared, no message is transmitted
to indicate this,
• some messages concerning the aircraft’s configuration such as stall or overspeed
warnings are not recorded,
• message-timing by the CMC is accurate to within one minute,
• the order in which these messages are transmitted does not necessarily correspond
to the associated sequence of events,
48
• the limited rate of communication by satellite does not make it possible to determine
directly the time of message reception precisely to the nearest second,
• in the CFR, a class 1 fault message is not necessarily accompanied by a cockpit effect,
and it is possible that a cockpit effect message is not the consequence of a fault
message.
Fault messages are identified by the letters FLR (for “failure”) at the beginning of the
message, and cockpit effect messages by the letters WRN (for “warning”):
fault: - .1/FLR/FR0906010211 34123406IR2 1,EFCS1X,IR1,IR3,,,,ADIRU2 (1FP2),HARD
cockpit effect: - .1/WRN/WN0906010210 221002006AUTO FLT AP OFF
The information contained in a message differs depending on the type of message. Some of
this information may be common:
Note: the fault messages generated by the EFCS are always of the HARD type.
Analysis of the cockpit effect messages
Note: when cockpit effect type messages are associated with procedures, the latter are referenced in
appendix 5.
The cockpit effect messages are described in the order in which they appear on the CFR.
The theoretical symptoms in the cockpit are given for each one taken separately: the ECAM
message, the visual and aural warnings, the SD page called up and the local alarms that
correspond to it.
49
o AUTO FLT AP OFF (2 h 10)
ECAM Alarm Aural
warning
Visual
warning
SD
page Local alarm
Inhibited
in phase
6
AUTO FLT AP OFF Cavalry charge Master warning - - no
Meaning: This message indicates an autopilot disconnection other than by pressing the
push-button provided for that purpose on the control sticks (instinctive disconnect).
o AUTO FLT REAC W/S DET FAULT (2 h 10)
ECAM Alarm Aural
warning
Visual
warning
SD
page Local alarm
Inhibited
in phase
6
AUTO FLT REAC W/S DET FAULT Single chime Master caution - - no
Meaning: This message indicates unavailability of the reaction to wind shear detection
function.
o F/CTL ALTN LAW (2 h 10)
ECAM Alarm Aural
warning
Visual
warning
SD
page Local alarm
Inhibited
in phase
6
F/CTL ALTN LAW (PROT LOST) Single chime Master caution - - no
The green symbols showing the attitude protections on the PFD are replaced by amber
crosses.
Meaning: This message indicates switching to alternate flight control law.
o FLAG ON CAPT PFD SPD LIM and FLAG ON F/O PFD SPD LIM (2 h 10)
Symptoms: Disappearance of the display of the characteristic speeds (in particular VLS and
green dot) on the Captain and First Officer PFDs, with display of the SPD LIM flag at the
bottom of the speed scales.
Meaning: This message indicates the unavailability of the FMGEC’s characteristic speed
calculation function.
o AUTO FLT A/THR OFF (2 h 10)
ECAM Alarm Aural
warning
Visual
warning
SD
page Local alarm
Inhibited
in phase
6
AUTO FLT A/THR OFF Single chime Master caution - - no
Meaning: This message indicates disconnection of the auto-thrust other than by pressing the
button provided for that purpose on the throttle control levers (instinctive disconnect) or that
the throttle control levers were moved to the idle notch.
50
o NAV TCAS FAULT (2 h 10)
ECAM Alarm Aural
warning
Visual
warning
SD
page Local alarm
Inhibited
in phase
6
NAV TCAS FAULT - - - Flag on PFD and
ND no
Meaning: This message indicates that the TCAS is inoperative. At this stage of the
investigation, this message has not been fully explained.
o FLAG ON CAPT PFD FD and FLAG ON F/O PFD FD (2 h 10)
Symptoms: Disappearance of the Flight Director on the PFDs, Captain and First Officer
sides, and display of the red FD flag.
Meaning: This message indicates the Flight Director function is selected and unavailable.
o F/CTL RUD TRV LIM FAULT (2 h 10)
ECAM Alarm Aural
warning
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