Oceanic Area System Improvement Study (OASIS). Volume I. Executive Summary and Improvement Alternatives Development and Analysis.

Abstract : This report describes potential improvement alternative to air traffic services (ATS) system in the North Atlantic, Central East Pacific, and Caribbean regions. The improvements would affect the communication, navigation, and surveillance functions, and include: vertical separation minimum reduction above Flight Level 290; an airborne separation assurance device; automatic dependent surveillance with either network HF data link and voice or satellite data link and voice; cooperative independent surveillance with multiple satellite data link and voice; and combinations and derivatives of these improvements including a simple network HF data link and voice system. The provider and user costs of the potential improvements were estimated, including capital, and maintenance, and flight costs. The flight costs for fuel, crew, and maintenance were estimated using the Flight Cost Model (FCM) computer program which simulates alternate separation minima and operations corresponding to selected potential improvement configurations, and considers anticipated future traffic. The total costs to the year 2005 of the improvement configurations were compared to assess their economic feasibilities.