The FAA is investigating an incident where a jetliner had to abort its landing due to another plane departing on the same runway. Such occurrences, known as runway incursions, can be highly dangerous and require thorough investigation to prevent future incidents. The FAA will likely review air traffic control communications, flight data, and any relevant video footage to determine the cause and identify any procedural errors or lapses in safety protocols. These investigations are crucial for maintaining and improving aviation safety standards.