Final answer:
The responsibility of the pilot and crew to report a near midair collision is when the proximity is at 500 feet or less to another aircraft.
Step-by-step explanation:
The responsibility of the pilot and crew to report a near midair collision is when the proximity is at 500 feet or less to another aircraft. This means that if two aircraft are within 500 feet of each other, the pilot and crew are responsible for reporting this incident. It is important to report these incidents to the relevant authorities to ensure the safety of air travel.