As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT THERE WAS SMOKE IN THE COCKPIT. THE SMOKE DISSIPATED ON ITS OWN BEFORE LANDING. THE ACFT LANDED WITHOUT FURTHER INCIDENT AT ITS INTENDED DESTINATION. MAINTENANCE DEFERRED THE COOLING PACK 1 SYS. THE DEFERRAL WAS CLEARED ON 8/4/2014 WHEN OPERATIONAL CHECKS OF THE PACK 1 SYS WERE GOOD WITH NO FURTHER DEFECTS NOTED.