As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICERS WINDOW 2R CONTINUES HIGH PITCHED SQUEAL. HALF WAY UP AFT VERTICAL POST. FOUND SEALANT MISSING FROM SEAL RETAINER AT LOWER WINDOW FRAME. APPLIED SEALANT PER MM. CHECKED WITH DEF PRESS 3.0, NO LEAK FOUND PER MM. REPLACED RIGHT NR 2 SLIDING WINDOW PER AMM.