Old planes can now get new lithium batteries for backup power

The US aviation regulator has created new safety rules for installing modern lithium-ion batteries in older Airbus C-212 series airplanes. This means these planes can now use lighter, more powerful batteries for critical backup systems, which was not previously allowed under existing rules.

For decades, aviation safety rules were written for older battery technologies. This meant that even if a new, safer battery existed, it couldn't be installed in an older plane without a specific exemption. This change allows a specific type of older aircraft to upgrade to modern power systems, improving reliability and potentially reducing weight. It sets a precedent for how regulators can adapt to new technology without rewriting all existing rules.