As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AC MUSTY SMELL BELOW10K FEET. ATTEMPTED TO ACCOMPLISH TASK 21-00-00-615-802-A AT THE REQUEST OF UAL MANAGEMENT AND TOMC, REQUIRED ENGINE PRESSURE AND TEMPERATURE IN STEP 4B4A ARE UNATTAINABLE AT IDLE THRUST SETTING ON THE GATE. ACCOMPLISHED MAINT TASK AMM 21-00-00-615-802-A. NO UNUSUAL SMELLS/ODORS NOTED IN COCKPIT OR IN MAIN CABIN.