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kuyakev
ANSWERS: 2
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The descent rate varies with altitude and weight. Normally above 10,000 feet, the descent from cruise altitude is done with idle thrust, going anywhere from 1500-3000 feet per minute. Pilots typically begin this descent when they are within 150-200 NM of the airport. Once below 10,000 feet, careful speed monitoring is also necessary. At this stage, the descent must slow down, flaps deployed, spoilers used, and various other manuevers performed. The descent now can be anywhere from 500-1000 feet per minute. Without ILS, if the runway is being approached visually (not uncommon) then the descent rate may go to as little as 100 feet per minute, slowing even more as the aircraft prepares to touch down. Altitude, airspeed, trim, flaps, thrust, and pitch all play a role in the descent rate.
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ROD Rate Of Descent * From Cruise FL to 10,000ft hold 0.79 Mach until 290 kts, reduce thrust for 2500 fpm * Below 10,000ft rate of descent varies with ATC requirements, but is between 800 - 3000fpm * In normal conditions 250kts idle descent , then slow & configure speed so as to not add power until on Glide Slope. * Use speedbrakes to slow down * Glide Slope descend is between 1500 - 500fpm depending on your situation * At Runway Threshold descend between 400-200fpm for a smooth touchdown landing
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