What was found
WHILE CLIMBING THROUGH FL280 WE EXPERIENCED AND LOUD POP/THUMP AND THEN HEARD AIR RUSHING INTO THE AIRCRAFT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE CLIMBING THROUGH FL280 WE EXPERIENCED AND LOUD POP/THUMP AND THEN HEARD AIR RUSHING INTO THE AIRCRAFT.