What was found
SMOKE AND FUMES IN THE CABIN, FUMES IN COCKPIT SHORTLY AFTER TAKEOFF. R & R THE NR 1 HEAT EXCHANGER. OPS CHECKED GOOD. LEAK CHECK GOOD. FOUND GRATE ASSEMBLY DAMAGED. R & R THE GRATE ASSEMBLY. OPS AND LEAK CHECKED GOOD. FOUND THE NR 1 ACM TO BE SEIZED. ACM WOULD NOT TURN ON WITH BLEED AIR ON. FOUND SIGNS OF DAMAGE TO THE COMPRESSOR BLADES OF THE ACM. R & R THE NR 1 ACM. OPS CHECKED GOOD. LEAK CHECK GOOD. R & R THE DUCT SENSOR. OPS AND LEAK CHECKED GOOD. R & R THE PACK DUCT OVER TEMPERATURE SWITCH. OPS AND LEAK CHECKED GOOD. FOUND INCORRECT SWITCH INSTALLED IN THE NR 1 PACK SET DOWN SWITCH LOCATION. R & R THE NR 1 PACK SET DOWN SWITCH. OPS CHECKED GOOD. NO DEFECTS NOTED. R & R THE PACK OVER TEMPERATURE SWITCH. OPS AND LEAK CHECKED GOOD.