The standard POB on a CRJ 700 is 2. Which statement best describes the two configurations that deviate from this standard?

• A. 70 PAX and 70 PAX United each require 3 POB
• B. Only 70 PAX require 3 POB
• C. Only 70 PAX United require 3 POB
• D. No exceptions

Answer: (A)

Portable oxygen bottles (POB) on this jet aren’t fixed; the count changes with how the cabin is configured. The two-seat standard setup is two POB, but when the aircraft is configured for around 70 passengers, extra oxygen coverage is required. In both the standard 70-seat layout and the 70-seat United layout, an additional POB is specified, bringing the total to three. This reflects the need to ensure adequate portable oxygen availability for the higher occupancy scenario and for potential contingencies in a depressurization until the aircraft descends to a safe altitude. Other configurations don’t push the occupancy or policy thresholds, so they stay with the baseline two POB.