What must be ensured for a passenger requiring in-flight oxygen service?

The requirement for a passenger needing in-flight oxygen service to have an able-bodied adult present focuses on ensuring safety and assistance in case of an emergency. This provision is essential as the presence of an able-bodied adult can help the passenger with mobility issues or difficulties in using the oxygen service effectively. In-flight situations may require immediate assistance, especially concerning safety protocols or evacuations, and sharing space with someone who can help is critical for the well-being of the passenger.

The option regarding a backup oxygen tank, while it might seem practical, is not a standard requirement since airlines typically provide adequate oxygen facilities for those who need them. The condition about boarding last addresses logistical arrangements but does not impact the safety of the passenger in the same way that having an able-bodied adult does. Lastly, the exclusion of exit row seating is based on safety regulations that prevent certain passengers with special needs from occupying those seats, ensuring appropriate assistance can be rendered in emergencies. However, the central focus remains on having an adult present to assist throughout the flight.