As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING DESCENT STRONG ODOR PRESENT IN FLIGHT DECK AND AFT GALLEY. MOSTLY ASSOCIATED WITH POWER CHANGES. IMPROVED IN FLIGHT DECK AFTER CROSS-BLEED SELECTED TO SHUT. STRONGER IN AFT GALLEY AFTER CROSS-BLEED SHUT. MAINTENANCE FOUND THE APU OIL LUBE MODULE VALVE CAP LEAKING OIL AND REPLACED THE VALVE CAP PER CMM 49-90-57. A SATISFTORY LEAK CHECK WAS ACCOMPLISHED WITH NO LEAKS NOTED.