What was found
DURING MAINTENANCE IT WAS NOTED THAT THE FORWARD AND AFT MOUNT STRUCTURES FOR THE AFT WATER HEATER WERE FOUND DAMAGED. WATER HEATER IS SUSPENDED AT 6 POINTS. THE REAR MOUNT WHICH PREVENTS LATERAL MOVEMENT AND THE FORWARD MOUNT WAS FOUND TO BE CRACKED. THE HEATER AND ASSOCIATED MOUNT STRUCTURE IS ADDED DURING AIRCRAFT COMPLETION. THE MANUFACTURER OF THIS INSTALLATION IS RATHEON E-SYSTEMS. THIS IS THE SECOND TIME THIS PART STRUCTURE CRACKS ON THIS AIRCRAFT TYPE. REMOVED AND REPLACED CRACKED MOUNT. L3 COMMUNICATIONS IS EVALUATING THIS PROBLEM. (M)