As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A ONE INCH CRACK ON THE AFT END OF RT GUIDE RAIL FOR THE CREST COWLING ON THE TOP OF THE FUSELAGE LOCATION WATER LINE 2900 MM, BUTTLINE RT 300MM AND STATION 4000MM. THIS ITEM WAS FOUND DURING AAIP INSPECTION. CENTER CREST COWL ATTACHES AT THIS POINT SO IF HAVING EITHER LOOSE HARDWARE, VIBRATION AND HAVING ALMOST 12,000 HRS THIS IS COMMON.