What was found
WHEN THE BLEEDS ARE SWITCHED FROM ENGINE TO APU IN FLIGHT, OIL FUMES ARE SMELLED IN THE COCKPIT AND CABIN. COULD NOT DUPLICATE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHEN THE BLEEDS ARE SWITCHED FROM ENGINE TO APU IN FLIGHT, OIL FUMES ARE SMELLED IN THE COCKPIT AND CABIN. COULD NOT DUPLICATE.