What was found
NR 2 ENG NACELLE PYLON OVERHEAT LOOPS A & B LIGHTS ON AFTER TAKEOFF. BOTH LOOP LIGHTS WENT OUT WHEN THROTTLE/POWER REDUCED AND HIGH PRESSURE BLEED OFF. WHEN POWER INCREASED, LOOP LIGHTS CAME ON WITH HIGH PRESSURE BLEED OFF. INSPECTED DUCTING AND TIGHTENED CLAMPS IN SPLITTER AREA. INSPECTED AND TIGHTENED CLAMPS IN PYLON ABOVE ENGINE. FOUND B-NUT ON PNEUMATIC DUCT FWD OF EJECTOR VALVE BACKED OFF. TIGHTENED SENSE LINE B-NUT. APPLIED PNEUMATICS, RAN ENG PER PFHB AND CKS GOOD.