What was found
DOOR 1R LOUD LOW HUMMING NOISEINBOUND CREW DEBRIEFED. FLIGHT ATTENDANTS REPORT NOISE (DESCRIBED AS LIKE A TUBA, NOT A SQUEAL), FROM UPPER AREA OF DOOR 1R. NOISE STARTED APPROXIMATELY 18-20,000FT, AND WAS CONTINUOUS TO 33,000FT. WHEN AT CRUISE, NOISE FLUCTUATED. DURING DECENT, NOISE RETURNED TO BEING CONTINUOUS. REQUEST PERFORMED ECRA 5300-03239 PART 1 INTERIM REPAIR.