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Cosmic-Ray Theory Raised in JetBlue A320 Plunge as Airbus Updates Fleet

Regulators have yet to verify the cause after Airbus briefly grounded roughly 6,000 A320-family jets for urgent software updates.

Overview

  • The Oct. 30 JetBlue A320 from Cancún to Newark suddenly lost altitude and diverted to Tampa, where about 15–20 passengers were taken to hospitals with non-life-threatening injuries.
  • Airbus said its analysis indicated intense solar radiation could corrupt flight-control data and ordered immediate software updates across thousands of A320-family aircraft.
  • Space-radiation experts, including Clive Dyer, argue solar activity that day was insignificant and suggest a cosmic-ray strike from a distant supernova as a more plausible trigger.
  • Most aircraft received the software fix within hours, around 900 needed hardware changes, and as of early week fewer than 100 planes still awaited modification, according to reporting.
  • Investigations continue and neither the FAA nor Airbus has confirmed a cosmic-ray or supernova origin, highlighting broader concerns over particle-induced upsets in modern avionics.