The arguments against such flexibility rotate around the thought that, in the event of a medical incapacitation, an air carrier or commercial pilot usually has another pilot on board who can take control of the aircraft and safely land. In contrast, the private pilot often has no such "safety net" and, therefore, a medical incapacitation is likely to have severe safety consequences. In the case of the private pilot, I think we can be more flexible and allow that pilot to assume some risks for him or herself that we would not permit in air carrier or other commercial operations. This philosophy is frequently challenged regarding the safety of persons who fly as invitees of the private pilot. The risk derives not only from the medical status of the pilot, but the pilot 's proficiency and experience as well as the airworthiness of the aircraft.
One might suggest that our approach, allowing greater flexibility in the medical certification of private pilots, constitutes experimentation with safety in private operations. This suggestion might have some validity if private pilots who are granted special issuances experience a significant number of medically related accidents. Humans regard vision as their most valuable sense, yet they fail to appreciate what a remarkable and complicated organ the human eye is. The rods are concentrated in a ring around the cones.
Both the cones and the rods are used for vision during daylight and bright moonlight. The pilot should consciously practice this scanning procedure to improve night vision. It is important for the pilot to maintain good physical condition.
While dim red lighting has the least adverse effect on night vision, it severely distorts colors. Older pilots may experience extreme
Bibliography: Aeromedical factors. (n.d.). Retrieved from http://www.free-online-private-pilot-ground-school.com/aeromedical.html Aeromedical factors. (n.d.). Retrieved from https://ntc.cap.af.mil/ops/dot/school/CAPF5_Course/aeromedical.htm Aeromedical factors: cfi lesson plan. (n.d.). Retrieved from http://cfi-lesson-plans.com/aeromedical-factors/ Aerospace medicine & human factors. (n.d.). Retrieved from http://aeromedical.org/avmed_home.php Office of aerospace medicine. (n.d.). Retrieved from http://www.faa.gov/about/office_org/headquarters_offices/avs/offices/aam/cami/