What was found
ON PUSHBACK, NOTED WING LEADING EDGE OVERHEAT ON LEFT WING. WHEN ADP NR 1 WAS SELECTED, LIGHT WENT OUT. RETURNED TO BLOCKS. FOUND DUCT CRACKED AT BOSS FOR NR 2 PYLON BLEED AIR SENSE LINE, BOSS BLOWN OUT. REMOVED AND REPLACED DUCT ASSY, LEAK CHECK NORMAL PER MM 36-11-01. DUCT VERIFIED BY P/N TO BE IN COMPLIANCE WITH AD 91-06-08.