What was found
LOW POP REPORTED ON CLIMB OUT BY PAX IN 2E. F/A 'S CALLED AT CRUISE FL 220 TO REPORT PAX REPORT AND TO SAY IT WAS SO LOUD WITH NOISE NOW THEY COULDN'T TALK TO EACH OTHER BY 2E. DIVERTED, AND MADE A UNEVENTFUL LANDING. REMOVED UPPER FWD EMERGENCY EXIT DOOR IAW AMM 52-22-00-000-801. FOUND NO SEALANT ON UPPER CORNERS OF LOWER FWD EMERGENCY EXIT DOOR. APPLIED NEW SEALANT TO UPPER CORNERS OF LOWER FWD EMERGENCY EXIT DOOR AS REQUIRED IAW AMM 51-23-00-390-801. CLOSED LOWER FWD EMERGENCY EXIT DOOR AND INSTALLED UPPER FWD EMERGENCY EXIT DOOR IAW 52-22-000-400-801. PRESSURIZED ACFT TO 4.5 PSID IAW AMM 21-00-00-863-801. NO "POPS", "SQUEALS" OR LOUD UNUSUAL NOISE NOTED. ACFT HOLDS PRESSURE OK. LEAK CHECK OK. DE-PRESSURIZED ACFT IAW AMM 21-00-00-863-802. NO FURTHER DEFECTS NOTED. NOTE: REF USED FOR SEALANT PLACEMENT ABOVE WAS IAW HS 52-0008 STEP 1B. RETURNED TO SERVICE.