Volume I
2008

Passenger terminals at Brazilian airports: an evaluation of quality
Adival Aparecido Magri Jr
Cláudio Jorge Pinto Alves

Abstract
The competition among airlines and even among airports to try expand the demand for their services has been increasingly firce. To have knowledge about the customers´perception of the offered services means to meet their needs and expectations, in order to keep the customers and, therefore, keep a significant advantage over the competition. The air transportation passengers want rapidity, security and convenience. Conveniense can be understood as the comfort the passenger wants for the price he can afford. This paper identifies, as a result of a survey conducted at six Brazilian airports suring 2002, the best indicators of the passengers´ perception. These indicators, among others, have been listed in the Airports Council International (ACI) handbook. Distinctive perceptions were observed among passengers with different travel motivations. This survey was carried through at the airports of Brasilia, Porto Alegre, Salvador, Fortaleza, Curitiba and Belém. Based on its results we could then identify of the service at these particular six airports of the Brazilian network. the results shall be pulished and made available to all the parties concerned (airport authorities, airline companies and service providers) and shold lead to corrective actions whenever a passenger is not satisfied with the service.

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Evaluation of the impact of new technologies on aeronautical safety: an approach through modelling, simulation and comparison with legacy systems.
Lúcio Flávio Vismari
João Batista Camargo Jr.

Abstract
Nowadays, the capacity of the air transportation system is limited by a chain of constraints. The values for the separation minima between aircrafts are limited by the technologies applied to the air traffic services cannot be met. The CNS/ATM is a concept based on digital technologies applied on comunication, navigation and surveillance as a way to minimize the above mentioned constraints. Nonetheless, it is necessary to ensure that the CNS/ATM concept guarantees the improvement of the air transportation system capacity an, at the same time, maintains acceptable safety levels. In this way, this work presents a method that permits the assessment of the impact of new technologies on the system safety levels. It combines modelling, simulation and quantitative comparison between systems as a way to maximize de advantages of the safety assessment methods adopted by the international Civil Aviation Organization(ICAO)

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Air trasnportation planning: multicriteria analysis in the definition of sustainable development indicators
Rosane dos Santos Lourenço
Arnaldo Caldeira Pires

Abstract
The purpose of this study is to provide a planning instrument for the decision making process in order to evaluate airport projects in different geopolitical contexts, taking into account the environment dimension of the problem. Firstly, three different scenarios are defined: a) The Predominantly Rural Regional Development Scenario; b) The Promotion of Sustainable Development Scenario; and, c) The More Aggressive Development Scenario. Next, a multicriteria model is built based on multidimensional indicators, which are categorized according to four criteria: a) economic; b)social; c) environmental; and, d) transport infraestructure (including facilities and services). The model, in addition to the potential quantitative analysis of the indicators to be obtained in a empirical research, presents a qualitative approach with the use of weighting criteria evaluated by multidisciplinary experts. The choice among different projects is possible through the resulting aggregated indicator - The Enhanced Sustainability Index - to be employed in a rational decision making process.

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A demand optimization model for aeronautical infraestructure
Jamil Kalil Naufal Jr.
João Batista Camargo Jr.

Abstract
This paper presents a model optimization proposal applied to a complex real problem with heavy safety requirements in aeronautical infraestructure. This problem is related to the unbalance between capacity and demand in the aeronautical infraestructure, which provokes big traffic jams, especially nearby the airports. As a consequence of this situation, there is an increase in the workload of air traffic controllers, making it difficult to maintain the safety integrity level. The demand optimization model (DOM) proposed in this paper uses generic algorithms to solve this problem. At the end, some results are presented, where this model is applied to a real scenario covering four regions of the Brazilian air space. This research shows the power of this approach, enabling the reduction of the air traffic controllers´ workload through air traffic demand optimization, and following the maintenance of the safety integrity level.

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A statistical methodology for the evaluation of the Brazilian regular traffic delay cost
Alexandra Ribeiro Mendes de Almeida
Beatriz Vaz de Melo Mendes
Erivelton Pires Guedes

Abstract
This paper provides a methodology for the evaluation of air traffic delay costs in Brazil, focusing on the national air carries. the proposed methodology is based on the analysis of monthly data provided by national air carries to DAC (Department o Civil Aviation), according to the IAC-1505 instructions, in 2001. The minimum weekly flight times were collected, disaggregated by aircraft type, route and air carrier. The samples were then adjusted to a Generalized Extreme Value (GEV) distribution. It was thus possible to evaluate, for all flight times, the difference between the sum of the actual flight times and the sum of the estimated minimum flight times. This overall difference was then multiplaied by the mean value of the aircrafts´ operational costs, producing the overall delay costs, estimated in about 500 million dollars, which correspond to approximately 24.8% of the overall costs.

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Productivity analysis of the Brazilian air transport industry
Antonio Henrique de Araújo Jr.
Reinaldo Pacheco da Costa

Abstract
Until the beginning of the 1990s, passenger air transportation was strongly regulated in Brazil. This was the case for both the domestic and the international market, which is now undergoing a liberalization process. Two important dimensions were studied in the context of the air transport deregulation: the productive or allocative effiency and the technical effiency. This paper focuses on the productivity analysis of the main production factors: labor, capital, energy and also on the process directly managed by airlines. It measures the operational productivity and its explanatory variables during the post-deregulation period, as well as its impacts the studied period, the Brazilian airlines have achieved an expressive productivity growth: 34.4% or 3.7% p.a. and, therefore, above the overall industry avarage growth.

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