The Everest Base Camp Heli Tour choppers can carry 5 passengers and a captain. The maximum passenger weight allowed between Kathmandu and Lukla is 500 kilograms. However, the maximum weight allowed from Lukla to Kala Patthar/base camp is 250 kg. So, to maintain a body weight of 250 kg on average, we operate in two shuttle flights from Lukla to Kala Patthar and vice versa.