Re: Obtaining IFR clearance
We have to get an ADIZ clearance for every flight which are handled somewhat like IFR clearances. On our DA20's the hobbs doesn't tick until the oil pressure is up so we can use the radio without using hobbs time. When I have 141 students that are pushing their time I use this method to save hobbs time, and ATC doesn't seem to mind the 10 minute gap between obtaining the clearance and taxiing.
At times the clearance frequency can get quite busy so catching them when they're available can save time.
Mike
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