The Federal Aviation Administration (FAA) is responsible for the regulation and oversight of civil aviation within the United States. Therefore, when it advises that lithium-ion batteries can be hazardous, it speaks with authority. The FAA issued a Safety Alert for Operators concerning these batteries on August 25 2025, that we link to below.
Lithium-Ion Batteries Can Be Hazardous on Aircraft
The FAA cites a number of serious incidents in passenger compartments arising from lithium-ion (L-Ion) batteries. Therefore, it advises, airlines should address potential fire risks arising from batteries carried by passengers and crew. They should also review firefighting procedures and crew readiness.
The Administration’s announcement confirmed 50 lithium-ion battery smoke, fire or extreme heat incidents on aircraft in the previous eight months. Some of these have injured people on board, disrupted flights, and / or caused diversions.
Reuters cites one of many examples of how lithium-ion batteries can be hazardous. In this particular incident, a passenger’s smartphone overheated and began smoking. The passenger sustained injuries while the aircraft floor was damaged. Hundreds of other passengers were also inconvenienced.
Recommendations For Mitigating L-Ion Battery Hazards
The FAA recommends U.S. airlines adopt the following seven-step plan:
- Identify all potential hazards. Reduce the risks of carrying lithium batteries.
- Review lithium battery firefighting methods and training, including thermal runaway stages.
- Assess safety equipment such as extinguishers, water sources, and fire containment.
- Evaluate onboard items that may become involved in thermal runaway events.
- Review procedures that minimize the potential for smoke inhalation by people on board.
- Review safety information including websites, messaging, and in-cabin announcements.
- Inform passengers of the stages of thermal runaway, and also appropriate action.
The Federal Aviation Administration is concerned that passengers may obscure lithium-ion batteries in power banks and portable chargers, by placing them in overhead bins and carry-on baggage. This makes it difficult for crew to monitor them, and delays thermal runaway detection and firefighting responses.
More Information
FAA Guidelines for Lithium Battery Transport
Thermal Runaway and Personal Safety
