ensuring the security in civil aviation - as a primary factor in economical and industrial development - is the major concern of international community. pursuant to the serious challenges in this sector after terrorist events of 11 september 2001 in the united states, international civil aviation organization (icao) as the most important organization relating to the international civil aviatio...

The Advanced Automation System is a distributed real-time system under development by Loral's Federal Systems Company for the US Federal Aviation Administration. The system is intended to replace the present en-route and terminal approach US air traac control computer systems. High availability of air traac control services is an essential requirement for the system. This paper discusses the ge...

Physical infrastructure is critical to the nation's economy and affects the daily life of virtually all Americans— from facilitating the movement of goods and people within and beyond U.S. borders to providing clean drinking water. However, this infrastructure—including aviation, highway, transit, rail, water, and dam infrastructure—is under strain. Estimates to repair, replace, or upgrade agin...

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CHATURVEDI AK, CRAFT KJ, CANFIELD DV, WHINNERY JE. Toxicological findings from 1587 civil aviation accident pilot fatalities, 1999–2003. Aviat Space Environ Med 2005; 76:1145–50. Introduction: The prevalence of drug and ethanol use in aviation is monitored by the Federal Aviation Administration (FAA). Under such monitoring, toxicological studies for the 1989–1993 and 1994–1998 periods indicated...

To reduce the possibility of midair collisions, the Federal Aviation Administration has developed the Traffic Alert and Collision Avoidance System, or TCAS. This airborne system senses the presence of nearby aircraft by interrogating the transponders carried by these aircraft. When TCAS senses that a nearby aircraft is a possible collision threat, TCAS issues a traffic advisory to the pilot, in...

All single-rotor helicopters require an antitorque device (usually a tail-rotor system) to counter the fuselage’s reaction to the rotation of the main-rotor system. From 1988 through 1993, there were 74 U.S. civil turbine-engine helicopter accidents involving the helicopter’s tail-rotor system, according to statistics from the U.S. National Transportation Safety Board (NTSB) and the U.S. Federa...

• The Mode S data link is a high-capacity air-ground digital communications system that can deliver information to the cockpit in a form that will significantly improve pilot situational awareness and aircraft utility. The Federal Aviation Administration is currently deploying Mode S surveillance sensors with data-link capability at 143 sites across the United States. Two Mode S data-link appli...

URET is designated as the conflict probe for the Federal Aviation Administration's Free Flight Program. Objective analyses of the conflict detection and notification functions of URET are known as functional performance assessments. This paper introduces metrics and techniques that are applied to perform these assessments on data recorded from the URET systems at the Memphis and Indianapolis Ai...