The unofficial Delta crew report must be verified. Nothing can move forward without this first step.
If the incident happened, one hopes that Delta does a FOQA program on the 330; if so, perhaps the QAR can be downloaded, (far more data and greater sampling rates for some parameters). One hopes too that given the incident and current circumstances they have already pulled the recorders including the CVR at NRT and shipped them to Washington.
Hopefully more information will be available on this throughout the day, with the usual caution that hindsight is 20/20. We know where this "points" but that is all we know as to possible cause(s).
augustusjeremy;
egg and chicken
a) 341115 - PROBE-PITOT 1+2/2+3/1+3
279334 - FCPC2(2CE2)/WRG: ADIRU1 BUS ADR1-2 TO FCPC2
OR
B) 279334 - FCPC2(2CE2)/WRG: ADIRU1 BUS ADR1-2 TO FCPC2
341115 - PROBE-PITOT 1+2/2+3/1+3
?????
These are recorded early in the entire sequence, (0210Z). The latter fault have associated Maintenance Status messages (ATA279000)
As per a number of experts' comments, the timing of the ACARS messages apparently can't be fully sorted out with 100% confidence not only because of the way the ACARS interfaces with the CMC, (Central Maintenance Computer) but becauses of the timings of individual system BITE processes which may complete and where such exists, latch a fault and then report. I personally think it is significant that the Pitot probes fault message comes before the first ADIRU messages but have nothing to substantiate that opinion. Perhaps those with special systems knowledge will be able to sort out which message came first by knowing that another fault wouldnt' have occurred without the first fault, etc etc.
A quick examination of the new ACARS PFR (Primary Fault Report?) list shows a few new details which had not been available on the first list made available:
A windshear Detect Fault, (My AMM shows “22-62-020” as the W/S DET FAULT)
The ISIS “Speed or Mach function”
Reference to ATA 279334 – FCPC2 and the explanation: WRG:ADIRU1 BUS ADR1-2 to FCPC2 – does this mean that FCPC2 took over inputs to ADR1 & 2?
Confirmation of Hard fault ATA 341115 PROBE PITOT 1+2 / 2+3 / 1+3
Clarification of the warning flag on the Capt PFD – Flight Director flag
Clarification of the warning flag on the F/O PFD – Speed Limit
Clarification of the PFD Flags at 0211 as “FPV”, flight path vector warning flags – this is an interesting fault
The “INTM” (Intermittent) AFS Class 1 Fault ATA 228334 – FMGEC1 (1CA1) BITE Detection is “CPC receives no data from FMGEC1”
My sole point in asking this is, if a rapidly devolving FMGES (Flight Management Guidance and Envelope System - all input devices, associated computers and crew interface units) are sending BITE results, by what method are they sorted for input into the CMC (and then sent to the ACARS)?
Perhaps the question is unimportant but the intent is clear enough; I just don't know enough to judge whether the order of ACARS messages we see is a result of this kind of critical process or not.
PJ2