Not only pitot probes. The GE90 is very susceptible to ice damage to the HP compressor stage 1 blades. Flight through high level 'ice clouds' builds up a deposit on the p25 probe this then breaks free and bends a blade. They are big blades as well approx 9ins x 5ins. At best its a borescope inspection for area 'blockage' that has to be calculated and at worst it's an engine change.
