As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1411, FLL-AUA. (AIRCRAFT PERFORMED AN AIR TURN BACK TO FLL) 'LOUD HISSING NOISE AND POP L1 DOOR ON ASCENT; ACCOMPLISHED PRESSURIZATION TEST FOR SPECIFIC AREA IAW AMM: 05-53-00. FOCUS AREA L1 DOOR & FWD ACCESS DOORS. NO LEAKS OR NOISES WERE NOTED. AS PRECAUTIONARY CLEANED & LUBED THE L1 DOOR SEAL. A/C OK TO CONTINUE.'