The static ports on the left side of the aircraft had been taped over while the aircraft was being waxed and cleaned. After the job was done, the tape was not removed.[8] February 23, 2008 – B-2 bomber crash in Guam caused by moisture on sensors.[9] 1 June 2009 – The French air safety authority BEA said that pitot tube icing was a contributing factor in the crash of Air France Flight 447.[10]