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Old 24th Jun 2010, 20:46
  #1603 (permalink)  
aguadalte
 
Join Date: Oct 2006
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HM39,
This is what's on the last interim report:
F-GZCP - 1st June 2009
37
ADIRU2 (1FP2) (2 h 11)
ATA: 341234
Source: IR2
Identifiers: *EFCS1, IR1, IR3
Class 1, HARD
This message was generated by IR 2. For an ADIRU of this standard, it means
that the IR considered that the three ADRs were invalid, that is to say that at
least one of the three parameters was invalid (SSM status not NO) amongst
pressure altitude, barometric vertical speed and true airspeed. As soon as the
third ADR is rejected, the IR generates a message pointing to its ADIRU. If one
of the IRs considers the three ADRs as being invalid, this must also be the
case for the other IRs. It is therefore logical that, in parallel with this ADIRU 2
message generated by IR 2, an ADIRU 1 message was generated by IR 1 and
an ADIRU 3 message by IR 3, which would explain the presence of the latter
amongst the identifiers.
The fact that EFCS1 was present amongst the identifiers preceded by an
asterisk indicates that EFCS1 had at least generated one class 2 message,
perhaps followed by a class 1 message. There are too few elements available
to determine precisely what the presence of EFCS1 amongst the identifiers
means. Nevertheless, it is possible to state that it concerns a rejection of ADR
by at least two PRIMs. It has not been possible at this stage to understand why
EFCS2, the clone of EFCS1, is not an identifier.
FMGEC1 (1CA1) (2 h 13)
ATA: 228334
Source: AFS
Identifiers: -
Class 1, INTERMITTENT
This message cannot be the trace of a reset which, in particular, excludes the
possibility of a manual shutdown. This message could be the consequence of
inconsistency between the two channels in the FMGEC (COM and MON). Such
an inconsistency could be the consequence of erratic input parameter values.
In any event, the effects of such a message could only be the disengagement
of automatic systems, whose associated cockpit effect messages had already
been transmitted at 2 h 10.
The “INTERMITTENT” nature of the message means that the problem lasted for
less than 2.5 seconds.
and later on on page 40, it gives a list of the ACARS messages, where the one issued at 2:13:14 is not mentioned:
Time Fault message with cockpit effect Cockpit effect messages
0210 PROBE-PITOT 1X2 / 2X3 / 1X3 (9DA)
AUTO FLT AP OFF
AUTO FLT REAC W/S DET FAULT
F/CTL ALTN LAW
FLAG ON CAPT PFD SPD LIMIT
FLAG ON F/O PFD SPD LIMIT
AUTO FLT A/THR OFF
FLAG ON CAPT PFD FD
FLAG ON F/O PFD FD
F/CTL RUD TRV LIM FAULT
0210 FCPC2 (2CE2) /WRG:ADIRU1 BUS ADR1-2 TO
FCPC2
MAINTENANCE STATUS EFCS 2
MAINTENANCE STATUS EFCS 1
0211 ADIRU2 (1FP2) FLAG ON CAPT PFD FPV
FLAG ON F/O PFD FPV
0214
Note: this message is necessarily correlated
with a fault message, but this fault message
was not received
MAINTENANCE STATUS ADR 2
Fault messages without cockpit effect
0211 ISIS(22FN-10FC) SPEED OR MACH FUNCTION Note: the flags on the ISIS are not
captured by this CMC
0213 FMGEC1(1CA1)
Note: the only cockpit effects
potentially associated with
this message had already been
generated and could not be
generated a second time
Cockpit effect messages without fault
0210 NAV TCAS FAULT
0212 NAV ADR DISAGREE
0213 F/CTL PRIM 1 FAULT
0213 F/CTL SEC 1 FAULT
0214 ADVISORY CABIN VERTICAL SPEED
The message you are referring to was issued at 2:11 not at 2:13:14
The 2nd interim report discusses this message on pages 37-38 under the heading "ADIRU2 (1FP2) (2h11)"
not this one:
.1/FLR/FR0906010211 34123406IR2 1,EFCS1X,IR1,IR3,,,,ADIRU2
(1FP2),HARD
Am I missing something here?
Thanks,
VF
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