What was found
AIRCRAFT WAS GROUNDED: SHORTLY AFTER TAKEOFF AN UNUSUAL ODOR LIKE SMELLY SOCKS WAS SENSED THROUGHOUT THE ENTIRE AIRCRAFT STARTED IN THE AREAS OF ROW 8 AND 9 AND FORWARD. **SUPPLEMENTAL REPORT FOR AALA202401023907: MAINTENANCE FOUND EVIDENCE OF OIL CONTAMINATION IN THE APU COMPARTMENT. MAINTENANCE ACCOMPLISHED THE APU SMOKE /ODOR / FUME TROUBLESHOOTING TASK CARD AND NO LEAKS WERE NOTED. MAINTENANCE ACCOMPLISHED THE DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM WITH NO FINDINGS OR ODORS NOTED. ** (CLOSED)