What was found
A STRONG ODOR WAS IN THE FORWARD CARGO BAY, REPORTED BY RAMP CREW, EMANATING AROUND AIRCRAFT EXTERIOR FROM FORWARD CARGO BAY. THE AIRCRAFT WAS GROUNDED. MAINTENANCE ACCOMPLISHED JC 26L00021001, AND FOUND AND REPLACED BURNED INSULATION, IN THE MIXING BAY NEAR FIN 14HK, IAW AMM 21-63-52. MAINTENANCE ALSO PERFORMED A SATISFACTORY OPERATIONAL CHECK.