As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/O WINDOW LOCKING BOLT WAS OUT OF POSITION DURING INITIAL CLIMB-OUT. LOUD NOISE FROM AIR LEAK. RETURNED TO LAND AT MSP, DUMPED 10,000 LBS FOR LANDING WEIGHT. REINSTALLED RT SLIDING WINDOW SEAL PER STD PRAC & DC10-10 AMM 56-12-00-4. OPERATIONAL CHECK OF RT SLIDING WINDOW NORMAL PER DC10-10 AMM 56-12-00-4 & 56-12-00-5. A/C OK FOR SERVICE.