What was found
DURING CLIMB-OUT, VIBRATION FELT, SUBSIDED AT CRUISE. ON DESCENT, VIBRATION RETURNED WITH SULFUR SMELL. RAN QRH TO ISOLATE THE LT PACK. SMELL AND VIBRATION STOPPED. REMOVED AND REPLACED EQUIPMENT COOLING FAN PER MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB-OUT, VIBRATION FELT, SUBSIDED AT CRUISE. ON DESCENT, VIBRATION RETURNED WITH SULFUR SMELL. RAN QRH TO ISOLATE THE LT PACK. SMELL AND VIBRATION STOPPED. REMOVED AND REPLACED EQUIPMENT COOLING FAN PER MM.