What was found
CREW REPORTED SMOKE IN CABIN, FOLLOWED PROCEDURES TO CLEAR SMOKE AND ISOLATED POWER TO MEDICAL EUIPMENT BELIEVING THAT WAS THE SOURCE. NO ADDITIONAL SMOKE OR SMELL WAS OBSERVED. WHILE EN ROUTE TO MAINTENANCE FACILITY THE CREW REPORTED HEARING AND FEELING A LOUD VIBRATION IN THE AIRFRAME, BELIEVING IT TO BE FROM AN ENGINE. INSPECTION REVEALED NO EVIDENCE OF FIRE IN AIRCRAFT. THE NR 2 ENGINE OIL WAS OBSERVED TO BE HIGHER THAN NORMAL, POSSIBLY CAUSING A MINOR LEAK RESULTING IN THE SMOKE IN CABIN. TWO BLEED AIR LINE CONNECTIONS WERE FOUND WITH WORN SEALS AT THE HEAT EXCHANGER CAUSING THE METAL LINE TO VIBRATE AND LEAK CAUSING THE VIBRATION.