As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(ORIG-CLOSED) FLIGHT NUMBER 159. AFTER STARTING RIGHT ENGINE-VIBRATION HEARD AND FELT THROUGHOUT AIRCRAFT AT IDLE POWER. VIBERATION GOES AWAY WHEN POWER ADVANCED. MAINTENANCE PERFORMED TEST NR 10 HIGH/LOW IDLE CHECK PER MM 71-00-00, NO FAULTS FOUND. PERFORMED TEST NR 6, ENGINE VIBRATION SURVEY PER MM 71-00-00/501, CHECK OK. PER MM 71-00-00-2 ENGINE WITH PHASE 5 COMBUSTERS RUMBLE AT IDLE IN COLD WEATHER. OPERATION NORMAL PER MM 71-00-00-2. AIRCRAFT RETURNED TO SERVICE.