As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, AFTER RUNNING NEW TAKEOFF DATA, FMC SHOWED 88.4 FOR NR 1 ENGINE AND 89.2 FOR NR 2 ENGINE. RE-RAN DATA AND RECEIVED MESSAGE CALCULATION ERROR 3 DIFFERENT TIMES. ACFT GROUNDED. T/S SYSTEM, FOUND NR 2 PACK INOPERATIVE. R & R AIR CONDITIONING MODULE ON P5 PANEL, REF AMM 21-51-65-400-801. ALL FUNCTIONAL CHECKS OK.