As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PACK CYCLED OFF THEN ON MULTIPLE TIMES DURING T/O. IT WAS ACCOMPANIED BY AN ODOR OF DIRTY SOCKS. DISCHARGE TEMP SENSOR REPLACED ON NON ROUTINE PER 21-31-05. OPERATED PACK PER MM 21-00-00-001 OPS CHECK GOOD. THE AIRCRAFT WAS GROUNDED.