As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING ODOR FROM FLIGHT DECK FLOW 10 MINUTE AFTER BEING OPENED, CONTINUED FLIGHT PER MEL. REMOVED LT WATER SEPARATOR, CLEANED WITH MILD SOAP AND WATER, AND REINSTALLED. GROUND RAN SUSPECT SMELL FROM RESIDUAL OIL FROM COMPRESSOR SEAL LEAK REF TO AML NR 479886. NO BURNING SMELL IN FLOW NOW, OK FOR SERVICE. (M)