How many O2 Walkarounds are on the OFAR for the 777-300ER?

How many O2 Walkarounds are on the OFAR for the 777-300ER?

• A. 6
• B. 7
• C. 8
• D. 9

Answer: (C)

Eight O2 walkarounds are listed in the OFAR for the 777-300ER. The OFAR uses these walkarounds to verify the entire crew oxygen system is ready at all required stations, so every crewmember has access to functional oxygen if needed. Each walkaround checks a different oxygen location or function—such as the flight deck O2, crew seats or jumpseats, and the indicators and flow/pressure gauges involved—to ensure there are no leaks, the masks deploy correctly, and oxygen flow is available. With multiple crew positions on this aircraft, eight distinct checks provide complete coverage of the oxygen system without unnecessary repetition. That’s why eight is the correct total.

Eight O2 walkarounds are listed in the OFAR for the 777-300ER. The OFAR uses these walkarounds to verify the entire crew oxygen system is ready at all required stations, so every crewmember has access to functional oxygen if needed. Each walkaround checks a different oxygen location or function—such as the flight deck O2, crew seats or jumpseats, and the indicators and flow/pressure gauges involved—to ensure there are no leaks, the masks deploy correctly, and oxygen flow is available. With multiple crew positions on this aircraft, eight distinct checks provide complete coverage of the oxygen system without unnecessary repetition. That’s why eight is the correct total.