Over 100 commercial jets stand idly on the tarmac of Singapore’s Changi Airport, grounded by the Covid-19 pandemic that has debilitated the airline industry. Passenger volume at what was the world’s seventh busiest airport has plummeted to a mere 1.5 per cent of happier and noisier times before the pandemic. This sight is repeated at aviation hubs across the world, with some 31 per cent of the world’s 26,000 commercial planes still inactive according to aviation data company Cirium, even as air travel creeps up with the establishment of