Are approved POCs allowed onboard but not permitted for use inflight?

Approved portable oxygen concentrators (POCs) are indeed allowed on board aircraft as per regulations established by aviation authorities. However, their use inflight is subject to specific conditions. Generally, while these devices can be brought onto the aircraft, the regulations mandate that they should only be used if they are approved and the passenger has confirmed the proper functioning of the device.

The correct answer indicates that while approved POCs can be carried by passengers, they are not permitted for use during the flight except under certain conditions, such as emergencies or specific medical needs that have prior approval from the airline. This reflects compliance with safety and operational protocols that prioritize passenger safety during flight.

While there may be exceptions or specific regulations for certain conditions, the general rule stands that approved POCs are indeed allowed onboard but restricted from use inflight without the necessary approvals or exceptional circumstances.