As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: STRONG SMELL ON TAKEOFF ROLL, SIMILAR TO DIRTY SOCKS. NOTICABLE AT 40% N1, BECAME WORSE AS WE INCREASED THRUST. EVIDENCE OF OIL WAS FOUND ON THE STAGE 3 BOOSTER BLADES AND EVIDENCE OF SIGNIFICANT COKING WAS PRESENT ON THE STAGE 4 GUIDE VANES. REMOVED AND REPLACED NUMBER 2 ENGINE ASSEMBLY. PER J/C 08L40072003.