As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD HISSING SOUND BY FO'S SIDE WINDOW, STARTING AT ABOUT 1.5 PSI DIFFERENTIAL AND NOT SUBSIDING. CABIN PRESSURIZATION NORMAL. DIVERTED. LANDING UNEVENTFUL. FOUND MULTIPLE OUTER SCREWS LOOSE ON AFT SIDE OF FO`S SIDE WINDOW. TORQUED SCREWS IAW AMM TASK 56-10-06-400-801. PRESSURIZED ACFT IAW AMM TASK 21-00-00-863-801. NO LEAKS NOTED. ACFT OK FOR CONTINUED SERVICE.