On Nov 2, 12:45 pm, paul kgyy wrote:
I've heard some discussion that there is a national number to call for
a void time on filed IFR flight plans.

True? And if so, what's the number?

I saw (I think it was here) that there is a nationwide clearance
delivery number, 1-888-766-8267. Have not tried it yet...

Cheers,
John Clonts
Temple, Texas
N7NZ