In the fifth paragraph, prone most nearly means

Read this passage and answer questions: Historically, the term pilot error has been used to describe an accident in which an action or decision made by the pilot was the cause or a contributing factor that led to the accident. This definition also includes the pilot's failure to make a correct decision or take proper action.     From a broader perspective, the phrase human factors related more aptly describes these accidents. A single decision or event does not lead to an accident, but a series of events and the resultant decisions together form a chain of events leading to an outcome.  ... Show more

Read this passage and answer questions:

Historically, the term pilot error has been used to describe an accident in which an action or decision made by the pilot was the cause or a contributing factor that led to the accident. This definition also includes the pilot's failure to make a correct decision or take proper action.    
From a broader perspective, the phrase human factors related more aptly describes these accidents. A single decision or event does not lead to an accident, but a series of events and the resultant decisions together form a chain of events leading to an outcome.    
In his article Accident-Prone Pilots, Dr.  Patrick R. Veillette uses the history of Captain Everyman to demonstrate how aircraft accidents are caused more by a chain of poor choices rather than one single poor choice. In the case of Captain Everyman, after a gear-up landing accident, he became involved in another accident while taxiing a Beech 58P Baron out of the ramp. Interrupted by a radio call from the 17-11 dispatcher, Everyman neglected to complete the fuel crossfeed check before taking off.    
Everyman, who was flying solo, left the right-fuel selector in the cross-feed position. Once aloft and cruising, he noticed a right roll tendency and corrected with aileron trim. He did not realize that both engines were feeding off the left wing's tank, making the wing lighter.    
After two hours of flight, the right engine quit when Everyman was flying along a deep canyon gorge. While he was trying to troubleshoot the cause of the right engine's failure, the left engine quit.    
Everyman landed the aircraft on a river sand bar but it sank into ten feet of water.    
Several years later, Everyman flew a de Havilland Twin Otter to deliver supplies to a remote location. When he returned to home base and landed, the aircraft veered sharply to the left, departed the runway, and ran into a marsh 375 feet from the runway. The airframe and engines sustained considerable damage. Upon inspecting the wreck, accident investigators found the nose wheel steering tiller in the fully deflected position. Both the after-takeoff and before-landing checklists required the tiller to be placed in the neutral position. Everyman had overlooked this item.    
Now, is Everyman accident prone or just unlucky?    
Skipping details on a checklist appears to be a common theme in the preceding accidents. While most pilots have made similar mistakes, these errors were probably caught prior to a mishap due to extra margin, good warning systems, a sharp copilot, or just good luck. What makes a pilot less prone to accidents?    
The successful pilot possesses the ability to concentrate, manage workloads, monitor and perform several simultaneous tasks.    
Some of the latest psychological screenings used in aviation test applicants for their ability to multitask, measuring both accuracy and the individual's ability to focus attention on several subjects simultaneously. The FAA oversaw an extensive research study on the similarities and dissimilarities of accident-free pilots and those who were not. The project surveyed over 4,000 pilots, half of whom had clean records while the other half had been involved in an accident.    
 

Five traits were discovered in pilots prone to having accidents. These pilots:    
Have disdain toward rules.    
Have very high correlation between accidents on their flying records and safety violations on their driving records.    
Frequently fall into the thrill and adventure seeking personality category.    
Are impulsive rather than methodical and disciplined, both in information gathering and in speed and selection of actions to be taken.    
Show a disregard for or under-utilization of outside sources of information, including copilots, flight attendants, flight service personnel, flight instructors, and air traffic controllers.    

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