As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTED BURNING ODOR COMING FROM AIR VENTS BURNING ODOR IS THE RESULT OF THE LEFT PACK OUTPUT AT 99 DEGS AND RISING. THERE IS NOTHING ABNORMAL ABOUT THIS ODOR EXCEPT TO FIND CAUSE OF LEFT PACK NOT PUTTING OUT NORMAL COOL AIR. THIS HOT TEMP OUTPUT SEEMS TO HAVE A HISTORY.