As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: MAIN CABIN LEFT SIDE BS 663 TO 639 BL45 TO 63 VAPOR BARRIER DETERIORATED. APPLIED VAPOR BARRIER. PER B737 AMM 28-11-00-300-804 PERFORMED VAPOR BARRIER THICKNESS CHECK ON REPAIR AREAS AT MAIN CABIN LEFT SIDE ALL AREAS WITHIN LIMITS. PER AMM 28-11-00.