augustusjeremy:
210 34-11-15-0 FLR EFCS2
EFCS1, AFS - PROBE PITOT 1+2/2+3/1+3 (9DA)
9DA=HEATING ELEMENT PITOT 1 (6DA1/PHC1)
Heating Element Pitot 1 suspected failed.
Bye Bye dual/triple pitot failure hypothesis...
This is way too much reading into this ACARS sequence. ACARS are only triggered for post-flight maintenance once landed. They are not a kind of FDR giving the full data flow involved behind each events, neither they are a sequential explanation of the in flight cockpit events.
The ground maintenance will download the complete data report from each real time fault or event displayed by ACARS; once it is done, it will appear that nothing is wrong with the probes: from the other reports, by Airbus and Air France, which are describing this sequence of pitot-static line icing, the point is that nothing is discovered "failed" once landed, neither the probe heat units, neither the probe heat computer, neither the probes themselves: ice obstruction is gone.
This ACARS is just pointing at "what may have failed" (9DA: Heating element pitot 1) in order to get this part ready, but also, it is on the first pitot-probe because it is a shortened message send by an expensive system (SATCOM); this doesn't mean that the sequence of faults is anyway complete and that the following won't include one or two remaining probes. Moreover, the Rudder Control Limiter system wouldn't be stopped without an unreliable speed condition concerning two or more units. A single unit fault is considered a minor issue almost transparent for the flight management.
S~
Olivier