What was found
HOT OIL SMELL IN COCKPIT, SEEMS TO BE ASSOCIATED WITH A PACK, POSSIBLY LEFT, BUT HARD TO SAY. NO OTHER INDICATION. LEFT PRE-COOLER OUT TEMP INDICATES 180 DEG. INSPECTED HEAT EXCHANGER INLET AND REMOVED BIRD'S NEST DEBRIS. PRE-COOLER OUT TEMP NOW READS 79 DEG LEFT AND RIGHT PACK TEMP CONTROLLER BITE TEST ACCOMPLISHED PER FIM 21-51-00 FIG 104 WITH NO FAULTS NOTED.