坐飞机可以带 便携式医用制氧机 吗？（美国TSA/加拿大CATSA标准）

有限制允许：须严格符合民航安全规范与限量要求方可随身携带。

允许托运：须符合民航关于托运数量、包装及防护要求的相关规定。

Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.

Prescription pills and solid medications do not require declaration at domestic security checkpoints. However, liquid prescription medicines exceeding 3.4 ounces (100 ml), injectables, and syringes must be declared to checkpoint officers before screening begins for visual or explosive trace inspection under medical exemption guidelines.

Notify the airline when booking — carriers require advance notice, confirm your POC model against the FAA acceptance list, and set battery-duration requirements (typically 150% of flight time). Many airlines do not provide oxygen service.