What was found
UPON LANDING CREW NOTICED A BURNING ELECTRICAL SMELL AND THEN AT THE GATE WITH BOTH ENGS OFF, APU ON AND ONLY PACK 2 ON RECDIVED BLEED 2 LEAK EICAS MESSAGE. REF ITEM 1 LG PG 5074288 FOR TRIAD EVENT CORRECTIVE ACTION AND ITEM 1 LG PG 5074287 FOR BLEED 2 LEAK CORRECTIVE ACTION. 5074286-2: UPON ARRIVAL @ AIRCRAFT, NO BURNING SELL PRESENT. PERFORMED GVI OF MIDDLE AVIONICS BAY AND PACKS 1 + 2 BLEED LINES. NO DEFECTS NOTED. RAN PACKS 1 + 2. NO BURNING SMELL AT THIS TIME. SUSPECTED BAD #2 PRE-COOLER PER FIM 36-11-00-810-837-A. 5074288-1: FOLLOWING TRIAD EVENT WORKSCOPE PERFORMED TASK 25-30-00-810-801A NO SMELL NOTEDON GALLEY AREA TASK 21-20-00-810-801A NO SMELL NOTED WITH APU RUNNING AND TASK 21-20-00-810-803A NO SMELL NOTED COMING FROM PACK1 OOR PACK2 ALSO RUNNED ENGINES NO SMELL COMING FROM ENGINES EITHER