Turn on "ignore crash" for the first few attempts, use full flaps, gear down, about 140 IAS over the runway and a rate of descent of 300-500 feet per minute, then cut the throttle at about 10 feet and flare...slowly. You'll do OK...although the PAX will give you an angry stare as they exit the airplane (hopefully by the door...and not the chute.)
A good runway to practice on is KJFK's Runway 13R / 31L...it's 14,572 feet long http://en.wikipedia.org/wiki/Image:JFK_airport_diagram.png and an overrun will result in a refreshing dip into Jamaica Bay.
(Next week we'll learn about spoilers, reverse thrust, and brakes.)
2007-01-13 21:30:32
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answer #1
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answered by 4999_Basque 6
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5 times ground speed
300 feet per nautical mile.
These will give the descent rate for a 3 degree descent angle and top of descent.
3 degrees is what ATC expects and it is what the ILS uses.
TAS = 480
headwind component = 60
ground speed = 420
Rate of descent = 2100 fpm (42 halved is 21)
TAS = 480
tailwind component = 60
ground speed = 540
Rate of descent = 2700 fpm (54 halved is 27)
32,000 feet to 2000 feet = 30,000 altitude change
divide by 300 = 100 miles minimum to go, start descent.
ILS
ground speed = 140 knots = use 700 fpm (14 halved is 7)
5 miles to go you should be 1500 feet above TDZE
4 miles to go you should be 1200 feet
3 miles to go you should be 900 feet
2 miles to go you should be 600 feet
1 mile to go you should be 300 feet
cross the threshold at 50 feet
land on the 1000 foot marker (ILS glide slope antenna is abeam)
1000 feet is one sixth of a mile
300 feet per mile is an approximation
6000 feet in a nm is an approximation
2007-01-14 17:06:27
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answer #2
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answered by mach_92 4
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I'm not too sure what you are referencing in "altitude x 3," really doesn't make any sense. I see your question in two phases: 1) determining a required rate of descent from cruise to arrive at the appropriate altitude at either the first approach fix or, if VFR, at the airport traffic pattern, and, 2) setting up your airspeed and rate of descent on final approach from either the Final Approach Fix (FAF) or on final from a visual approach. To calculate the required rate of descent from cruise, determine the distance from the fix (or, say, 1 - 2 miles nearer you from the airport for a standard VFR traffic pattern), and divide that by your groundspeed. That will give you the time to the fix. Next, subtract the altitude at the fix (or traffic pattern altitude, as appropriate) from your cruising altitude, and divide the required altitude loss by the time to fix (in minutes), and that will give you your required rate of descent. To fly final, either from the FAF or on a visual approach, a standard approach speed would be in the range of 1.3 to 1.4 x stall speed for the aircraft at its landing weight and configuration. That speed should be maintained on final until shortly before touchdown, at which point the Lear would be flared slightly, while reducing power, and the Boeing would typicaly be flown on at final approach speed. Again, the same calculations would apply for the rate of descent; however, in this environment, approach speed is more critical, and rate of descent is adjusted as necessary throughout the approach. Rate of descent would depend on your groundspeed (remember to consider head or tailwinds) relative to the distance of your final approach, and can change with changes in wind speed and/or direction (not unusual in the last 1,000 to 2,000 feet of descent). Generally, if flying a 120 knot approach, rate of descent on final can range from 400 - 600 FPM, and is judged by visual reference to the runway, or, if you are flying an ILS approach, by reference to the glideslope needle on the CDI.
2007-01-14 00:59:28
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answer #3
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answered by 310Pilot 3
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To calculate your point of descent its your flying altitude minus the last 3 digits and multiply by 3.. This will give your point of descent and your descent rate should be somewhere between 1500 and 2000 Ft/Min..On approach it should be around 700FT/Min.
Msg me if you need more information..always there to help pilots..
2007-01-14 12:25:54
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answer #4
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answered by ZUS 3
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You should take your approch from far away and descend at about 600 ft. per minute. When you are close to the runway and flaring, do 200 ft. per minute. That's for a Boeing 737.
For a Learjet 45, you should take your approach as your instructor taught you and depending on your altitude, take it however you like-but don't crash.
2007-01-16 20:17:30
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answer #5
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answered by Leon 5
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i have been taught a trick from a real world pilot that i use in microsoft flight simulator 2004. your rate of descent has to be 7-900 feet/minute and another trick is that if you are 3 miles away from the airport, you should have 1000 feet in altitude.
2007-01-14 18:54:06
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answer #6
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answered by mcdonaldcj 6
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usually a typical rate of decend at 140 knots on a 3 degree glide slope is about 700 fpm.
2007-01-14 02:12:14
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answer #7
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answered by TimTim 3
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If you are using flight simulator, study the aircraft manuals that come with it. Determine the stall speed at whatever weight you are and increase it by at least 10 knots. Trim nose up and keep the touchdown marks at the same spot in your windshield with the throttle.
2007-01-14 02:48:14
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answer #8
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answered by eferrell01 7
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I hope you are not flying around and asking that guestion.
Read the manual for the plane. It has all that information and a lot of things you don't think to ask.
But then your flight instructor should know this.
2007-01-14 00:45:41
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answer #9
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answered by Anonymous
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YOU ARE SO DUMB.
2007-01-14 07:31:27
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answer #10
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answered by zrunner04 2
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