Group 1 - Airbus has announced that approximately 6,000 A320 aircraft require urgent replacement of a flight control software that is susceptible to solar radiation [1][3] - Following an incident involving a JetBlue aircraft at the end of October, Airbus instructed all customers using the affected software to "immediately cease operations" [3] - Analysis revealed that "intense solar radiation could damage critical data required for flight control," a conclusion confirmed by Airbus [3] Group 2 - Major airlines, including American Airlines, Jetstar Airways, All Nippon Airways, and Avianca, have reported operational delays due to the urgent software upgrades required for the A320 aircraft [3] - As of October 7, Airbus A320 deliveries have surpassed Boeing 737 deliveries, marking a historic milestone in aviation with a total of 12,260 A320 aircraft delivered since its market introduction in 1988 [3][4] - Airbus stock closed at €204.45, reflecting a year-to-date increase of over 40%, with a total market capitalization exceeding €160 billion (approximately ¥1.3 trillion) [5]