As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG FUMES DURING T/O AND DESCENT W/ LIGHT HAZE IN CABIN. DISSIPATES DURING CRUISE. SMELL IS OF OIL. ACCOMPLISHED CONDITIONAL INSPECTION, IAW B747-400 AMM 05-51-56 AND FIM 21-00 TASK 810. ISOLATED SOURCE TO ENGINE 1 BLEED SYSTEM. REMOVED, CLEANED AND REINSTALLED PACK 2 COALESCER BAG. FOR COMPANY CONVENIENCE ENGINE 1 HP REQUIRES DEACTIVATION. SECURED ENGINE 1 HPSOV CLOSED AND TRANSFERRED TO DMI 70300340, IAW MEL 36-11-3 CAT C DUE 2-3-21, PLACARDS INSTALLED.