As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AND DIFFERENTIAL PRESSURE 2.6 THERE IS A LOUD NOISE AND VIBRATION FELT AND HEARD FROM BEHIND FORWARD INSTRUMENT PANEL ALL NOISES AND VIBRATIONS QUIT AT DIFFERENTIAL PRESSURE OF 3.4. DEFECT CONFIRMED, FOUND AN AIR LEAK ON PRESSURIZATION SEAL THAT WAS ADRIFT IN 2 PLACES ON FWD EQUIPMENT CENTER ACCESS DOOR , THE SEAL WAS REFITTED TO RETAINER IAW AMM 52-09-04-214-008.