As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRUISE FLIGHT LEVEL 370, F/A REPORTED WHISTLING NOISE FROM ACFT LT OVERWING EXIT. NOISE DIMINISHED DURING DESCENT. ACCOMPLISHED PRESSURIZATION TEST OF FUSELAGE IAW AMM. LT OVERWING HATCH PRESSURIZED AND INSPECTED LT OVERWING HATCH FOR AIR LEAK. NO AUDIBLE DEFECT NOTED. OK FOR SERVICE.