The authors thank the comments of Paulina Beato. They also want to thank all the representatives of airports, Civil Aviation Authorities and International Aviation Organizations for their input and answers to our questionnaire, a copy of which can be found in the appendix of the original report. They are specially indebted to Francisco Salazar (AENA), Julián de la Cámara (from the ICAO task force on fees) and Ernesto Vázquez Rocha (president of AITAL, the Latin American branch of IATA). This working paper is being published with the sole objective of contributing to the debate on a topic of importance to the region, and to elicit comments and suggestions from interested parties. This paper has not gone through the Department’s peer review process or undergone consideration by the SDS Management Team. As such, it does not reflect the official position of the Inter-American Development Bank.