Blended 1st stage fan blades on the 767's CF6 and, not being ETOPS qualified, had to downgrade the aircraft after maintenance was performed. Easy to overlook this during a busy morning.
About testing, we now are ALL CAT on our fleets! Ever heard of this Mark? I took the required training and passed the test, five modules, so now I am "ALL CAT" qualified on the fleet: 747, 76, 75, MD11, and A300.