Several pilots of the United States alerted the FAA about a warning recurring message on the Boeing 787, indicated by the onboard computer on a flaw in the system that is responsible for measuring the speed of flight, also known as pitot tubes.
The used test fleet provided three reports air speed, which indicated significantly below actual speed, said FAA. In each case, the 787 was flying conditions involving significant intake of water, and possibly, cases of icing in two of the three pitot tubes, which inform the speed and altitude of the aircraft.
In one case, the pilot reacted to inaccurate data by performing a sudden command of "diving" where the nose wins downward trend. During this procedure the autopilot was turned off. The FAA has demonstrated a concern that the pilot be frightened by such a warning and command a dive that exceeds the structural limit of the Boeing 787, the airlines have been recommended to guide their drivers when there is something.
Boeing and FAA will perform several tests continuously to identify the reasons for the display of such notice, the expectation is that the error resolve in the coming months, given the concern about the case.