PPRuNe Forums - View Single Post - New Policies at EK (The Green Dot Thread)
Old 1st Jul 2006, 11:06
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fiddlair
 
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Ray the short answer is : at the same point. Of course only theoretically, as you have to keep a slightly higher rate of descent( about 900 ftpmin depending on the weather and weight naturally) and you want to flare nicely. The long answer is: If we talk about FCOMs, and data from there, then you have to specify the type you are talking about when mentioning 14 and so on feet...
That is because on one aircraft 1 dot means 0.4 degree, on another 0.5 degree or maybe more and the ILS might be anything between 2.8 and 3.3 degrees I guess, so if the glideslope is 3.0 degrees, it's 5.2% which means you are probably 52 feet over the treshold (again theoretically) and the touchdown is 1000 ft from treshold.
You can maintain 2 or more dots above, and still catch the ground the same place.
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