LONDON (Reuters) - American Airlines AAL.O, British Airways ICAG.L, and the oneworld alliance will launch a coronavirus testing trial this month aimed at convincing the U.S. and UK governments to introduce testing so that transatlantic travel can restart. BA was operating 84 flights per week between London Heathrow and New York JFK prior to the pandemic, but last week operated just 21. BA CEO Sean Doyle said that without a travel testing regime, Britain was being left behind countries such as Germany. Alongside its partners, BA plans to collect data from at least 500 passengers on flights from three U.S. cities to London Heathrow by asking them to take three free COVID-19 tests as part of their journey: one before departure, one on landing, and one three days after their arrival.