What was found
PASSENGER OXYGEN SYSTEM DISTRIBUTION MANIFOLD FOUND TO HAVE A CRACK IN THE LINE WHERE A FITTING ATTACHES TO THE MANIFOLD P/N 97108928-013. THE FITTING SEPARATED FROM THE LINE WHEN REMOVING FLEX LINE FOR OTHER MAINTENANCE. IF THIS FITTING HAD SEPARATED AND WAS NOT DETECTED, THE PASSENGER O2 SYSTEM WOULD HAVE FAILED TO SUPPLY O2 TO THE PASSENGERS AND RISK OF FIRE. REFERENCE RAYTHEON IPC 35-21-01-37 FIGURE 37 PAGE 4 ITEM 90. THIS OXYGEN MANIFOLD IS INSTALLED IN A B737-700 VVIP CONFIGURATION BY STC ST09102AC-D WHICH IS REQUIRED UNDER STC ST9752SC-D.