From greespinner, post #73 :
341234 – ADIRU
279334 – EFCS
341115 – PROBE – PITOT
If one looks at all the ATA, we basically have a majority of 34xxxxxx and 22xxxxxx.
The maintenance status 341115 refers to pitot probe (-s ?).
Then what is common to ADIRUS, ISIS, 34xx flags on PFDs, rudder travel limiter ?
Bar a major electrics break-down, I can only see air data inputs.
Then the ADRs Disagree point towards the same origin : differing input data to the ADRs, which again puts the finger in the direction of faulty air data sensors.
So what can cause these faults ?
Icing.
Pitot probe icing.
Although unlikely and far-fetched, that's my only explanation, fwiw.
14:18
the Airbus telex greenspinner quotes confirms "unreliable airspeeds", and he posted it while I was typing.
Any thoughts ?