As i mentioned earlier, the c checks are now being carried out by SR Technics..i suspect strongly that they are going to catch alot of stuff that was previously "missed" over several years of maintenance by the previous maintenance contractor.
Trace amounts of minor corrosion are easily treated without structure work and will not warrant grounding an aircraft. Corrosion severe enough to warrant structural work/sheet metal replacement is a bit more than minor in my humble opinion. Glad they are now inspecting the aircraft thouroughly and fixing the problems with a tool other than one you stick in your shirt pocket.
