What was found
(CAN) BOLTS WERE PROCURED IN A LOT OF 26 FOR USE AS WING ATTACHMENT BOLTS ON CANADIAN MILITARY CC130H HERCULES AIRCRAFT. PRIOR TO INSTALLATION THE RCAF TECHNICAL ORDER REQUIRES THAT THESE BOLTS UNDERGO MAGNETIC PARTICLE TESTING. DURING MAGNETIC PARTICLE TESTING OF THE 26 BOLTS 4 BOLTS WERE FOUND TO BE CRACKED LONGITUDINALLY IN THE BOLT HEAD. THE SAME BOLT PART NUMBERS ARE USED IN CIVIL L100-382 HERCULES AIRCRAFT. (TC# 20180706012)