British Airways (BA, London Heathrow) and other fellow Oneworld alliance members who operate into Bangkok Suvarnabhumi have all denied claims by Airports of Thailand (AoT) that the group was keen to relocate their operations to Bangkok's old airport, Bangkok Don Mueang, citing "flight connectivity constraints and service quality for premium passengers as key impediments." The Bangkok Post reports that newly appointed AoT chairman, Sqn Ldr Sita Divari, had on March 27 said that "Oneworld was interested in shifting to Don Mueang, even suggesting that the alliance had proposed the airport be upgraded to handle A380-800s." Despite opening as recently as 2006, Suvarnabhumi International has already exceeded its planned operating capacity of 50 million passengers per year by 5 million, forcing Thai authorities to push Don Mueang as an alternative in order to alleviate congestion. Don Mueang is currently mainly used by Nok Air (DD, Bangkok Don Mueang), Thai AirAsia (FD, Bangkok Don Mueang) and other low-cost and charter carriers.