As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PERIODIC CHECK, THE NR 1 ENGINE NACELLE STRUT SKIN PANEL WAS FOUND WITH A CRACK COMING OUT OF THE 433AL ACCESS PANEL. CRACKS WERE APPROXIMATELY 0.75 INCH LONG IN THE SKIN, DOUBLER, AND TRIPLER. INSTALLED REPAIR PER NWA EA 55-98174. MFG PART NUMBER 311N3450-13, -15.