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Old 4th April 2010 | 10:34
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giladal
 
Joined: Oct 2009
Posts: 31
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From: ISRAEL
Struggling with a question

Hi Guys,

Wondering if anyone here can help me figure out this problem. I dont know what the formula is to figure out height below gs when considering dot deviation.

-- Question --
An aircraft is on an ILS approach and indicated half full scale deflection on the glide slope, giving a fly up indication. At 2.2NM range from the threshold there is an obstruction of 285ft above the threshold level. What will be the vertical clearance from the obstacle when the aircraft passes over it on a 3 degree glide slope?

Looking forward to hearing from you,
CG
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