The last place you want an exploding smartphone is on an airplane. That’s why the Federal Aviation Administration (FAA) is currently considering a complete ban on the Galaxy Note 7 that would prevent it from being taken on U.S. airlines.

Samsung has recalled all 2.5 million Galaxy Note 7 handsets sold to date, even though it’s thought that only a very small percentage of them are at risk of exploding from a battery fault. However, it isn’t an official recall just yet.

Although Samsung is giving customers the option to exchange their handset for a new one, some carriers and retailers in the U.S. are still selling them. That’s because Samsung didn’t initiate the recall with the Consumer Product Safety Commission.

Should that happen, the device would automatically be banned from U.S. airlines by the FAA. That hasn’t happened just yet, but the FAA is still considering it.

“The FAA and the Pipeline and Hazardous Materials Safety Administration are working on guidance related to this issue,” a spokesman told Gizmodo. 

“If the device is recalled by the manufacturer, airline crew and passengers will not be able to bring recalled batteries or electronics that contain recalled batteries in the cabin of an aircraft, or in carry-on and checked baggage.”

Right now, most airlines have no plans to ban the Galaxy Note 7 from their flights, but a ban from the FAA means they would have no choice but to do so. The difficulty will be establishing which Note 7 handsets are safe, and which are not.