Where is the oxygen blow out disc that is inspected during the pre-flight inspection?

Where is the oxygen blow out disc that is inspected during the pre-flight inspection?

• A. Right forward fuselage
• B. Under floor panels
• C. Nose cone
• D. Left forward fuselage

Answer: (D)

During preflight, you verify the oxygen system and its safety devices. A blow-out disc is a pressure-relief vent that protects the oxygen system by venting excess pressure if needed. On the A320, this disc is mounted on the left forward fuselage so ground crew can easily inspect it during the preflight checks and ensure it’s intact. The other locations listed do not house this vent, as the nose cone is the radome/avionics area, under-floor panels relate to different cabin oxygen plumbing, and the right forward fuselage isn’t the standard location for this disc.

During preflight, you verify the oxygen system and its safety devices. A blow-out disc is a pressure-relief vent that protects the oxygen system by venting excess pressure if needed. On the A320, this disc is mounted on the left forward fuselage so ground crew can easily inspect it during the preflight checks and ensure it’s intact. The other locations listed do not house this vent, as the nose cone is the radome/avionics area, under-floor panels relate to different cabin oxygen plumbing, and the right forward fuselage isn’t the standard location for this disc.