What was found
ATB - FLT EX9880 -DXB/DXB - NR 4 ENGINE, BOTH NACELLE TEMP INDICATORS INDICATED 8.4 ON SCALE AT CLIMB POWER CLOSED BLEED VALVE NO CHANGE. REDUCED THROTTLE TO IDLE, INDICATIONS DROPPED TO 2-2.5, SAME AS NR 1, NR 2, NR 3 ENGINE. AT HIGHER POWER INDICATIONS FOLLOW THROTTLE. FOUND NACELLE ANTI-ICE TOP ATTACHMENT CLAMP ADRIFT AND LEAKING AIR. CLAMP REMOVED AND VISUALLY INSPECTED, FOUND NO DAMAGE. CLAMP REINSTALLED AND TORQUED. LEAK CHECK, PERFORMED SATISFACTORILY. (M)