Airline Transport Pilot Licence
（重定向自Airline Transport Pilot Certificate）
The Air Transport Pilot License (ATPL), or in the United States of America, an Airline Transport Pilot (ATP) certificate is the highest level of aircraft pilot licence. Those certified as Airline Transport Pilots (unconditional) are authorized to act as pilot in command on scheduled air carrier's aircraft under CFR 14 Part 121. Additionally, ATP may be used as a name suffix, e.g. John Smith, ATP'