ATSP_Feb1_Final[1] - CNS/ATM Focused Team ATSP Focus Group...

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CNS/ATM Focused Team ATSP Focus Group February 1, 1999 1 AIRLINE METRIC CONCEPTS FOR EVALUATING AIR TRAFFIC SERVICE PERFORMANCE Report of the Air Traffic Services Performance Focus Group (ATSP FG) CNS/ATM Focused Team (C/AFT) February 1, 1999
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CNS/ATM Focused Team ATSP Focus Group February 1, 1999 2 Executive Summary The Communication Navigation Surveillance/Air Traffic Management Focused Team (C/AFT) formed the Focus Group (FG) on Air Traffic Service Performance (ATSP) to facilitate global airline consensus on the basis for evaluating the quality of Air Traffic Services (ATS). Within this framework, ATS performance metrics fulfill several important functions. First, they define the elements of value to the scheduled airline business. Second, they form a basis for assessing and monitoring the services provided by the ATM system. Finally, they can become the common criteria for developing economic models needed to predict benefits, and help make decisions when evaluating CNS/ATM alternatives. Because this report represents the work of the ATSP FG, its basic definition of value is related to how the ATM system impacts the airlines’ ability to plan and operate their schedules. Each metric concept is described within the context of how well it allows airlines to most effectively use their capital assets and manpower resources to produce their primary product, the flight schedule. This report has categorized metrics into the following basic categories of performance objectives that define air traffic service (ATS) quality. 1. Delay 2. Predictability 3. Flexibility 4. Efficiency 5. Access 6. Cost of Service Since the term value is used to represent the balance between the quality of air traffic services and its cost, all metrics that attempt to evaluate ATS performance within the first five categories must ultimately include the Cost of Service metric (ATS charges and airline costs) as their final denominator. This report defines these five categories using high-level, conceptual metric examples, and attempts to describe the fundamental interrelationships between them. 1 Delay has traditionally been used as the most direct measure of ATS performance. However, measuring delay against scheduled times in a congested system has become much less meaningful over time, because so much expected delay is built into the airlines’ block times to maintain operating integrity. Conceptually, delays should be measured by comparing actual flight times against baselined optimum times, not scheduled times, in order to assess overall ATM system performance. Predictability is a measure of delay variance against a performance dependability target. As the variance of expected delay increases, it becomes a very serious concern for airlines when developing and operating their schedules. Conceptually, predictability metrics should be a comparison of the actual flight time to the scheduled flight time, since the scheduled time includes the amount of expected delay at a targeted dependability performance.
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This note was uploaded on 12/07/2011 for the course MBA 0001 taught by Professor Akshat during the Spring '09 term at Institute of Management Technology.

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ATSP_Feb1_Final[1] - CNS/ATM Focused Team ATSP Focus Group...

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