Precision Approach Path Indicator (PAPI) lights are used as a visual approach sl

Question

Precision Approach Path Indicator (PAPI) lights are used as a visual approach slope aid for pilots landing aircraft. A typical glide path for commercial jet airliners is 3 degree . The space shuttle has an outer glide approach of 18 degree - 20 degree . PAPI lights are typically configured as a row of four lights. All four lights on, but in different combinations of red or white. If all four lights are white, then the angle of descent is too high; if all four lights are red, then the angle of descent is too low; and if there are two white and two red, then the approach is perfect. Glide Path of a Commercial Jet Airliner. If a commercial jetliner is at an altitude of 457 feet when it is a horizontal distance of 5200 feet (approximately 1 mile ground distance) from the runway, what is the glide slope angle? Round your answer to one decimal place. The glide slope angle is approximately degree .

Explanation / Answer

tan = h/b

= 5.02

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