What was found
ON CLIMBOUT FROM FLL, EN ROUTE TO CLT, CREW REPORTED AN EXTREMELY LOUD NOISE COMING FROM COCKPIT OVERHEAD WINDOW L5 WHICH DID NOT ALLOW CREW TO COMMUNICATE WITH EACH OTHER. FLIGHT RETURNED TO FIELD AT FLL AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REPAIRED BOTH NR 4 AND NR 5 EYEBROW WINDOWS PER EO 5611-01005. ACCOMPLISHED PRESSURIZATION CONFIDENCE CHECK, PART 3, PER JOB CARD 03C10021001. CHECKS GOOD.