Respuesta :
The pilot in command of an aircraft operated under IFR, in controlled airspace, not in radar contact, shall report by radio as soon as possible when passing each predefined reporting location while taking into account the time and altitude.
If it ever becomes clear that a previously provided estimate was more than two minutes off, it will be adjusted. If the mistake is 3 minutes or greater for flights across the North Atlantic (NAT), a revised estimate is necessary. The pilot should contact ATC before departing the final approach and fix inbound on the final approach if they are not in radar contact and there is no special request. By the route listed in the flight plan in the absence of an assigned route or a path that ATC has advised may be anticipated in a subsequent clearance.
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