As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF AD 2002-10-05- MAIN ROTOR UPPER HUB INSP FOUND (2) BOLT HOLES CRACKED AS DEPICTED IN MD HELICOPTERS SERVICE BULLETIN 900-072. CRACKS WERE FOUND USING MAGNIFIED VISUAL METHOD. HUB WAS SUBSEQUENTLY INSPECTED BY EDDY CURRENT METHOD TO VERIFY CRACKS. EDDY CURRENT INSPECTION USING A BOLT HOLE SCAN FOUND A THIRD HOLE CRACKED. THIS CRACK WAS NOT VISIBLE AT THE FLANGE SURFACE USING THE MAGNIFIED VISUAL METHOD. TO DATE HUB IS ON ORDER PENDING REPLACEMENT.