As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH FLIGHT LEVEL 240 THE DV WINDOW STARTED TO WHISTLE VERY LOUDLY. UPON REACHING FLAT LEVEL 270 THERE STARTED TO BE AIR LEAKING AROUND THE DV WINDOW WHICH INCREASED TO AN EXTENSIVE AMOUNT, CAUSING THE CABIN ALTITUDE TO EXCEED 10,000 FEET BY THE TIME CREW PUT ON THEIR OXYGEN MASS CABIN WAS AT 15,000 FEET AT THIS TIME AN EMERGENCY WAS DECLARED IN A RAPID DESCENT WAS PERFORMED.