As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS STRONG OIL FUME SMELL, SEEMS BETTER WITH LEFT PACK OFF. OCCURRED WITH BOTH ENGINE AND APU BLEED AIR. MAINTENANCE FOUND THE APU OIL COOLER FAN LEAKING. REMOVED AND REPLACED APU OIL COOLER FAN ASSEMBLY IAW AMM 49-52-51. OPS AND LEAK CHECK GOOD.