While modern aircraft are engineered to be incredibly robust, a plane can break up in mid-air under rare and extreme circumstances. The most common cause is structural failure due to metal fatigue, corrosion, or improper maintenance, where a critical component like a wing spar or pressurized bulkhead fails under the stress of flight. A catastrophic loss of cabin pressure at high altitude can also lead to an explosive decompression that compromises the airframe. Extreme weather, such as severe turbulence or microbursts, can exert forces on the wings and tail that exceed the aircraft's design limits, although this is extremely rare for commercial airliners. Another cause is mid-air collision with another aircraft or a high-velocity impact with a heavy object. Finally, sabotage or explosive devices can cause immediate structural disintegration. It is important to note that commercial planes are tested to withstand "limit loads" far beyond what they encounter in normal flight, and "in-flight breakup" remains one of the rarest types of aviation incidents in the 2026 safety landscape.