What was found
CREW HEARD WHINING SOUND UNDER FLOOR IN AFT GALLEY. INSTALLED NEW AFT CARGO HEAT VENTILATION FAN. STILL VERY LOUD IN AFT GALLEY. REPLACED FAN, CHECKED OKAY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CREW HEARD WHINING SOUND UNDER FLOOR IN AFT GALLEY. INSTALLED NEW AFT CARGO HEAT VENTILATION FAN. STILL VERY LOUD IN AFT GALLEY. REPLACED FAN, CHECKED OKAY.