Equipment failure or malfunction
Defects in an airplane can arise due to a number of factors, including design flaw, manufacturer flaw, or wear and tear from use. Although inspections are performed regularly, including before and after flights, accidents still can result from faulty or malfunctioning components.
Human error
Human error can happen due to mechanics, ground crew, flight attendants, air traffic controllers, and others, as these individuals play a crucial role in the maintenance and safe operation of an aircraft. Therefore, the Federal Aviation Administration (FAA) pays close attention to the training, knowledge, and communication to determine if human error may be the cause of an airplane accident.
Mid-air collisions
Mid-air collisions are less common cause of airplane accidents, and this is because the FAA uses the most advanced technology to detect potential collisions, as well as other forms of monitoring the aircraft.
Bad weather
Bad weather conditions, such as high winds, snow storms, thunder and lightning, and more, all pose a threat to some capacity when it comes to flying.
Pilot error
Pilots are always responsible for the safe transportation of passengers. Although it is rare, pilots fail to comply with the proper procedures when operating an aircraft.