The minimum oxygen pressure for dispatch for two cockpit crewmembers is 807 psi.

• A. 807 psi
• B. 1107 psi
• C. 607 psi
• D. 1000 psi

Answer: (A)

This question hinges on having enough oxygen for both cockpit crewmembers for the required duration in an emergency. The oxygen bottles used by pilots must be above a minimum pressure before dispatch to guarantee that two people can breathe adequately for the time the aircraft needs to operate under decompression or smoke conditions. The specified minimum for two crew is 807 psi, because this level provides the necessary oxygen supply for the mandated duration with an appropriate safety margin. Pressures lower than this could lead to running out of oxygen before the situation is resolved, while higher pressures are simply not required by the dispatch rule for two people.