; and (4) physical characteristics of the airport and its facilities, such as the configuration of runways, runway lighting, and construction activity. 5. Task Force on Human Factors in Aviation Safety (a) In general Not later than 6 months after the date of enactment of this Act, the Administrator shall convene an FAA Task Force on Human Factors in Aviation Safety. (b) Composition The Task Force shall consist of members appointed by the Administrator and having expertise in an operational or academic discipline that is relevant to the analysis of human errors in aviation. The number of members shall be determined by the Administrator to ensure sufficient representation of relevant operational and academic disciplines. (c) Duration (1) In general Members of the Task Force shall be appointed for the length of the existence of the Task Force. (2) Length of existence (A) In general The Task Force shall have an initial length of existence of 2 years. (B) Option The Administrator may exercise an option to lengthen the duration of the existence of the Task Force for a period of 2 years. (d) Disciplines For purposes of subsection (b), disciplines may include air carrier operations, line pilot expertise, air traffic control, technical operations, aeronautical information, aircraft maintenance and mechanics psychology, linguistics, human-machine integration, general aviation operations, and organizational behavior and culture. (e) Expertise (1) In general No less than half of the members shall have expertise in aviation. (2) Additional expertise The Task Force shall include members with expertise on human factors but whose experience and training are not in aviation specifically and who have not previously been engaged in work related to the FAA or the aviation industry. The Task Force shall also include pilot labor organizations and at least one member from an air traffic controller labor organization. (f) FAA members (1) In general Not more than 4 members may be employees of the FAA and NTSB, excluding representatives