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Eagle · January 19th, 2003, 16:04

they also have arrival requirements where ATC needs you at an alt. that is when you get.

Cross XYZ at 120.

There is a formula (escapes me right now) talks about how to figure when to start your desent to be at the crossing alt on time. I do it the old math way. xxxFPM/number of feet needed...

January 19th, 2003, 16:04	#3
Eagle Banned Join Date: Oct 2000 Posts: 1,272	Re: How does Center know? they also have arrival requirements where ATC needs you at an alt. that is when you get. Cross XYZ at 120. There is a formula (escapes me right now) talks about how to figure when to start your desent to be at the crossing alt on time. I do it the old math way. xxxFPM/number of feet needed...