In a stark reminder of the potential dangers associated with lithium-ion battery-powered devices, a recent incident aboard an Air Busan flight bound for Hong Kong has led to a significant warning for airline passengers regarding the use and condition of power banks. The incident occurred on January 28, 2025, when a power bank, stored in an overhead compartment, is believed to have sparked a fire, leading to an emergency landing at Gimhae International Airport in Busan, South Korea. The flight, which was carrying 176 passengers and crew, was forced to return to Busan after smoke was detected emanating from the luggage compartment. According to eyewitness accounts, the crackling sound of what seemed like an electrical malfunction was followed by the emergence of smoke, prompting immediate action from the cabin crew. The plane landed safely, and there were no serious injuries reported, with only minor burns sustained by a few passengers due to the quick response of the flight attendants.
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This event has reignited discussions around the safety of carrying power banks on aircraft. Power banks, or portable chargers, have become indispensable for travelers seeking to keep their devices charged during long flights or layovers. However, these devices contain lithium-ion batteries, which are known for their high energy density but also for the potential to overheat, leading to fires or thermal runaway — a process where the battery can generate its own heat, leading to a self-sustaining fire. South Korea's Ministry of Land, Infrastructure and Transport, along with aviation safety experts, has issued a warning advising passengers to ensure that their power banks are in good condition and from reputable brands. The incident underscores the importance of checking for any signs of wear or damage before bringing such devices aboard an aircraft. Professor Lo Kok-keung, a retired engineering professor with expertise in traffic accident analysis, emphasized that "passengers should check their power banks to ensure they are in good condition and avoid bringing old ones on board."
The International Air Transport Association (IATA) already has guidelines in place for lithium battery devices, including power banks. According to these regulations, power banks should not exceed 100 Wh (Watt-hours) for carry-on baggage. Those between 100 and 160 Wh require airline approval and anything above 160 Wh is not allowed on passenger aircraft. Additionally, passengers are advised to keep power banks in their carry-on luggage rather than checked bags, where they cannot be monitored, and to never charge them during the flight. The Air Busan incident isn't isolated. There have been previous incidents involving power banks on flights, including an explosion on a Royal Brunei flight in 2019 and a fire on a Scoot flight in 2023. These occurrences have led to increased scrutiny and sometimes, the temporary bans or restrictions on charging devices on certain airlines.
In response to this latest event, Air Busan, along with other airlines, might reconsider their policies on power banks. Some airlines have already implemented strict controls or outright bans on their use aboard flights, though Air Busan had not imposed such measures before this incident. This event might prompt a review of cabin safety protocols, possibly leading to more stringent checks at security or even at the boarding gate to ensure compliance with battery safety standards. Passengers are now urged to be more vigilant about the condition of their electronic devices, particularly those with lithium-ion batteries. The advice includes avoiding overcharging, not using unknown or cheap brands, and being aware of any unusual heat or swelling in devices. As airlines and regulatory bodies continue to assess the risks associated with these common travel accessories, travelers must also take responsibility to ensure their gadgets do not become a hazard in the sky.