What was found
(AUS) PROPELLER HUB CONTAINED A RADIAL CRACK IN THE OUTBOARD END OF THE NR 1 HUB ARM AT THE HUB/PILOT TUBE JOINT. CRACK WAS CONFIRMEDUSING MAGNETIC PARTICLE INSPECTION (MPI). CRACK LENGTH APPROXIMATELY 25.4MM (1IN). FOUND DURING DISASSEMBLY AND INSPECTION FOLLOWING LIGHTNING STRIKE ON NR 3 BLADE. THE PILOT TUBE PLUGS WERE REMOVED AND NR 1 AND NR 2 HUB ARMS WERE FOUND TO CONTAIN APPROXIMATELY 10ML WATER IN EACH (ALONG WITH CORROSION PREVENTATIVE COMPOUND).