Originally Posted by
Pontius Navigator
There was earlier talk of pitot covers not being removed. Then a suggestion that they would not have been fitted overnight. Then that the system may have been maintained over night.
But there are other possible problems are there not? Could there be water in the system? Has there been significant rainfall around these two flights?
Unless they were still on from the flight that reported the initial problem, and remarkably and however improbable this might be, no-one noticed prior to the second flight.