As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR OF SOMETHING BURNING IN COCKPIT. REMOVED BOTH COALESCER SOCKS P/N 746451-3 AND INSTALLED 2 NEW SOCKS P/N 746451-3. REMOVED THE COCKPIT (AFT) ACM P/N 738384-33 S/N 9808193 AND INSTALLED A REPAIRED UNIT P/N 738384-33 S/N 200207059. PERFORMED AN OPS/LEAK CHECK WITH NO DEFECTS NOTED. ALL WORK WAS PERFORMED IAW THE MM 21-51-00 AND 12-10-01.