Final answer:
The report time at the aircraft for the CRJ and the ERJ is 45 minutes before departure.
Step-by-step explanation:
The report time at the aircraft for the CRJ and the ERJ is 45 minutes before departure. This means that passengers should arrive at the aircraft 45 minutes prior to the scheduled departure time. It allows enough time for the necessary procedures such as boarding, checking-in luggage, and completing pre-flight preparations.