Eurocockpit reports another AF document pointing at a known problem with pitot probes:
French version:
page 1,
page 2
English version:
page 1,
page 2
Note that this AF maintenance from Aug. 2008 states that:
The purpose of this NT is to gather information in order to confirm the involvement of pitot probes in case of "NAV IAS discrepancy"
At the time of the creation of this NT, a case on THT and six cases on A340 AFR have been reported
Furthermore, if I'm not mistaken, several warnings reported in this note are found in the ACARS messages received from AF447