What was found
ON INITIAL CLIMBOUT EXCESSIVE AIR PRESSURE FROM PACKS CAUSED A CEILING PANEL IN CABIN TO BLOW OFF WITH HIGH AIRFLOW ON PASSENGERS IN THAT AREA. REMOVED CEILING PANELS IN AFFECTED AREA, BLOWN OUT SECTION OF DISTRIBUTION DUCT AND NUMBER 5 VIDEO SCREEN REPAIRED. REPLACED 7 SECTIONS OF DISTRIBUTION DUCT ON N/R CARDS 1-11. REMOVED AND REINSTALLED CEILING PANELS AND VIDEO MONITORS ON N/R CARDS 1-11, RAN PACKS AND PRESSURE CONTROL SYS IN HIGH AND LOW FLOW W/ENGS AND APU CHECKS GOOD PER AMM.