As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL-PIT - FLT 288 - UPON APPLICATION ON TAKEOFF THRUST, A STRONG, ACRID, MUSTY ODOR DEVELOPED IN THE COCKPIT AND AFT CABIN AREAS. FLIGHT LANDED IN PIT WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED LEFT AND RIGHT COALESCER BAGS. LEAK CHECKED GOOD. RAN THE APU AND BOTH ENGINES. NO ODOR WAS DETECTED. VISUALLY INSPECTED THE APU AND ACM COMPARTMENTS FOR LEAKS. NONE WERE NOTED. (M)