As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED OF FLIGHT DUE TO DURING CLIMB, A STRONG NOISE IN L1 DOOR WAS DETECTED WITH VIBRATION AND IT WAS SHOWN MESSAGE “LNAV AND VNAV” MAINTENANCE PERSONNEL PERFORM INSPECTION IAW AMM 52-11-00, DETECTING THE SEAL DISARRANGED; SO THE DOOR SEAL WAS REPLACED IAW AMM 52-09-12-00-801; IT WAS PERFORMED PRESSURIZATION TEST IAW AMM 56-12-11, ALL CORRECT.