As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A ENGINE PNEUMATICS PRODUCING A BURNT SMELL IN COCKPIT. WHEN TAI IS ACTIVATED SMELL GETS STRONGER. ODOR IS UNUSUAL APU PNEUMATICS DOES NOT PRODUCE THE ODOR. FOUND EVIDENCE OF BIRD STRIKE ON NR 2 ENGINE. PERFORMED BIRD STRIKE INSPECTION PER FIM 71-05-00 FIGURE 102. OK TO CONTINUE.