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Accession Number N20120014582
Title Traffic Aware Strategic Aircrew Requests (TASAR).
Publication Date Sep 2012
Media Count 9p
Personal Author D. J. Wing M. G. Ballin
Abstract Under Instrument Flight Rules, pilots are not permitted to make changes to their approved trajectory without first receiving permission from Air Traffic Control (ATC). Referred to as 'user requests'; trajectory change requests from aircrews are often denied or deferred by controllers because they have awareness of traffic and airspace constraints not currently available to flight crews. With the introduction of Automatic Dependent Surveillance-Broadcast (ADS-B) and other information services, a rich traffic, weather, and airspace information environment is becoming available on the flight deck. Automation developed by NASA uses this information to aid flight crews in the identification and formulation of optimal conflict-free trajectory requests. The concept of Traffic Aware Strategic Aircrew Requests (TASAR) combines ADS-B and airborne automation to enable user-optimal in-flight trajectory replanning and to increase the likelihood of ATC approval for the resulting trajectory change request. TASAR may improve flight efficiency or other user-desired attributes of the flight while not impacting and potentially benefiting the air traffic controller. This paper describes the TASAR concept of operations, its enabling automation technology which is currently under development, and NASA's plans for concept assessment and maturation.
Keywords Air traffic control
Air traffic controllers(Personnel)
Flight crews
Information systems
Instrument flight rules

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 85D - Transportation Safety
85A - Air Transportation
Corporate Author National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1308
Contract Number N/A

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