What was found
DURING CLIMBOUT, A LOUD CRACKELING SOUND WAS HEARD IN THE FLIGHT DECK. SOUNDED LIKE FROM EXTERIOR, LASTED APPROXIMATELY 5 MINUTES. PERFORMED GVI INSPECTION OF AIRCRAFT ACCESS PANEL, MLG DOORS, HUMP SEALS, WIPERS, BONDING JUMPER, STATIC WICKS FLIGHT DECK PANELS AND NO DEFECTS NOTED IAW SRM 51-10-02. AIRCRAFT OK FOR SERVICE.