American Airlines (AAL) stock plummeted 10.55% during night session trading, marking a significant 24-hour plunge for the airline carrier.

The sharp decline follows news that Todd Inman, a National Transportation Safety Board (NTSB) member who was the on-scene investigator for the January 2025 American Airlines collision with an Army helicopter near Reagan Washington National Airport, was fired by the White House. That collision resulted in 67 fatalities.

Investor concerns appear to be focused on potential implications for the ongoing investigation into the fatal incident and broader safety regulatory scrutiny. The news of the NTSB member's dismissal comes as the board continues its investigation into one of American Airlines' most serious safety incidents in recent years.