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 AFTER TAKEOFF STRONG DIRTY SOCK SMELL. MAINTENANCE ACCOMPLISHED JOB CARDS 26L00021001 AND 26L0002002. FOUND APU OIL COOLER FAN LEAKING. REMOVED AND REPLACED APU OIL COOLER IAW AMM 49-52-51. FUNCTION CHECK AND LEAK CHECK GOOD.