As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN DUE TO R2 DOOR LEAK. LOUD PULSATING NOISE. PERFORMED A DETAILED INSPECTION OF THE R2 DOOR SEAL IAW AMM 52-10-00-220-006A, NO DEFECTS FOUND. PERFORMED A PRESSURIZED TEST OF THE DOOR SEAL IAW 05-53-00-870-001A, NO LEAKS NOTED. NO DEFECTS FOUND. COULD NOT DUPLICATE WRITE UP. OK FOR SERVICE.