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daveatc · October 11th, 2006, 00:57

There's no real cut-off time, persay. Typically, clearances are kicked out of the computer to the controllers 30 minutes prior to whatever you filed as your proposed departure time. If you call before that, they just have to do a touch more digging (or calling someone, depending on where you're flying out of) to get you the clearance. However, to do that they have to change your P-time to get the computer to give you a code. No big deal, unless you plan on sitting on the ground for two hours, in which case the computer deletes your clearance.

Short answer, most places, controllers don't care when you get it!

October 11th, 2006, 00:57	#2
daveatc Former ATC Join Date: Aug 2006 Posts: 87	Re: Obtaining IFR clearance There's no real cut-off time, persay. Typically, clearances are kicked out of the computer to the controllers 30 minutes prior to whatever you filed as your proposed departure time. If you call before that, they just have to do a touch more digging (or calling someone, depending on where you're flying out of) to get you the clearance. However, to do that they have to change your P-time to get the computer to give you a code. No big deal, unless you plan on sitting on the ground for two hours, in which case the computer deletes your clearance. Short answer, most places, controllers don't care when you get it!