The long, pendulous ears on Cocker Spaniels are prone to ear infections if they are not cleaned on at least a weekly basis. Some Cocker Spaniels may need their ears cleaned 2-3 times per week. While playing with or brushing your Cocker Spaniel, lift the ear flap and sniff the ear. If it smells clean, it is healthy.
More importantly, though, Grand Canyon helicopters (West Rim AND South Rim) have a weight surcharge if a passenger weighs more than a specified limit. The weight limit is set by the tour operator, but it's usually either 275 or 300 pounds. So, as a general rule, passengers who weigh more than that will need to pay a weight surcharge before they're allowed to board their chopper. The amount of the surcharge is set by the tour company that's operating the flight.
Measuring 30.1 meters or 98 feet 10 in in length and with a rotor diameter of 18.3 meters or 60 ft., the CH-47D had an empty weight of 10,185 kg (23,400 lb) and a cargo capacity of 12,700 kg (28,000 lb) or could carry 33 to 55 troops apart from the pilot, copilot and flight engineer.