A chopper owned by Fishtail Air crashed at Lobuche of Solukhumbu district in north eastern Nepal on Tuesday afternoon. However, there was no casualty. All three persons aboard including the captain and an Australian citizen escaped unhurt though the rear part of the chopper suffered minor damage, according to official sources. The chopper crashed soon after it took off from the Mt. Qomolangma (Mt. Everest) region, Fishtail Air said.