Impact of Air Traffic Controllers' strike on the the safety of National Airspace System

1983 ◽  
Author(s):  
Mallik M. Arjunan
Author(s):  
Bradley Boyer ◽  
Margaret Campbell ◽  
Patricia May ◽  
David Merwin ◽  
Christopher D. Wickens

Three experiments are reported in which participants (air traffic controllers, Experiments 1 and 2; pilots, Experiment 3) were required to guide an aircraft around the hazards of terrain (Experiment 1) and weather (Experiments 2 and 3), using either 2D (planar) or 3D (perspective) displays. In Experiment 2, air traffic controllers, but not pilots, were less accurate in projecting tracks around terrain with the 3D display than with the 2D display. In Experiment 2, there was little difference between display formats in their ability to support safe vectoring around weather. In Experiment 3, pilots took slightly longer to plan a route around weather with the 3D display, and did so with equivalent accuracy to the 2D display. In all three experiments, the 3D display supported creation of paths that were slightly longer, and skirted the hazard by a wider margin than did the 2D display.


1983 ◽  
Vol 27 (10) ◽  
pp. 848-851
Author(s):  
Mallik M. Arjunan

The findings of the study performed for FAA/DOT Office of Aviation Safety are presented. The level of safety of performance in the ATC system after the strike of August 1981 was analysed. There were two parameters of interest, viz. 1, near mid air collisions, 2, operational error reports, of these, the operational errors related more directly to the performance of ATC and was analyzed in detail. The data consisted of 54 weekly frequency counts of operational errors and the volume of operations covering the periods from January 1980 to July 1982. The model used a linear autoregressive process, but the parameters were estimated using a derivative-free non-linear least squares estimation method. The post-strike operational error data normalized to the volume of operations were found to be lower than the same rate for the pre-strike period. The analysis of operational errors of the Air Traffic Controllers reported during comparable periods before and after the strike date of August 3, 1981 showed that there was a lack of degradation of safety of the National Airspace System in the post-strike period. This was found to be true both for terminals and the air route traffic control centers.


Author(s):  
O. M. Reva ◽  
V. V. Kamyshin ◽  
S. P. Borsuk ◽  
V. A. Shulhin ◽  
A. V. Nevynitsyn

The negative and persistent impact of the human factor on the statistics of aviation accidents and serious incidents makes proactive studies of the attitude of “front line” aviation operators (air traffic controllers, flight crewmembers) to dangerous actions or professional conditions as a key component of the current paradigm of ICAO safety concept. This “attitude” is determined through the indicators of the influence of the human factor on decision-making, which also include the systems of preferences of air traffic controllers on the indicators and characteristics of professional activity, illustrating both the individual perception of potential risks and dangers, and the peculiarities of generalized group thinking that have developed in a particular society. Preference systems are an ordered (ranked) series of n = 21 errors: from the most dangerous to the least dangerous and characterize only the danger preference of one error over another. The degree of this preference is determined only by the difference in the ranks of the errors and does not answer the question of how much time one error is more dangerous in relation to another. The differential method for identifying the comparative danger of errors, as well as the multistep technology for identifying and filtering out marginal opinions were applied. From the initial sample of m = 37 professional air traffic controllers, two subgroups mB=20 and mG=7 people were identified with statisti-cally significant at a high level of significance within the group consistency of opinions a = 1%. Nonpara-metric optimization of the corresponding group preference systems resulted in Kemeny’s medians, in which the related (middle) ranks were missing. Based on these medians, weighted coefficients of error hazards were determined by the mathematical prioritization method. It is substantiated that with the ac-cepted accuracy of calculations, the results obtained at the second iteration of this method are more ac-ceptable. The values of the error hazard coefficients, together with their ranks established in the preference systems, allow a more complete quantitative and qualitative analysis of the attitude of both individual air traffic controllers and their professional groups to hazardous actions or conditions.


Aerospace ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 170
Author(s):  
Ricardo Palma Fraga ◽  
Ziho Kang ◽  
Jerry M. Crutchfield ◽  
Saptarshi Mandal

The role of the en route air traffic control specialist (ATCS) is vital to maintaining safety and efficiency within the National Airspace System (NAS). ATCSs must vigilantly scan the airspace under their control and adjacent airspaces using an En Route Automation Modernization (ERAM) radar display. The intent of this research is to provide an understanding of the expert controller visual search and aircraft conflict mitigation strategies that could be used as scaffolding methods during ATCS training. Interviews and experiments were conducted to elicit visual scanning and conflict mitigation strategies from the retired controllers who were employed as air traffic control instructors. The interview results were characterized and classified using various heuristics. In particular, representative visual scanpaths were identified, which accord with the interview results of the visual search strategies. The highlights of our findings include: (1) participants used systematic search patterns, such as circular, spiral, linear or quadrant-based, to extract operation-relevant information; (2) participants applied an information hierarchy when aircraft information was cognitively processed (altitude -> direction -> speed); (3) altitude or direction changes were generally preferred over speed changes when imminent potential conflicts were mitigated. Potential applications exist in the implementation of the findings into the training curriculum of candidates.


2021 ◽  
Vol 96 ◽  
pp. 102105
Author(s):  
Marta Makara-Studzińska ◽  
Maciej Załuski ◽  
Joanna Biegańska-Banaś ◽  
Ernest Tyburski ◽  
Paweł Jagielski ◽  
...  

Author(s):  
Jamie D. Barrett ◽  
Brett Torrence ◽  
Michelle Bryant ◽  
Linda Pierce ◽  
Julia Buck

The primary mission of the Federal Aviation Administration (FAA) is to maintain the safety of the National Airspace System (NAS). As part of this mission, the FAA is tasked with ensuring that future air traffic controllers are adequately trained to perform the high-risk job of directing air traffic. The FAA Academy curriculum for newly hired controllers involves 3-4 months of intensive lessons and performance assessments. It has been suggested that this training program is quite stressful, and successful trainees tend to be those who can better manage stress. To support ATC trainees, researchers at the Civil Aerospace Medical Institute (CAMI) have conducted operational research to develop and evaluate a stress management training to help trainees manage their stress during training at the FAA Academy.


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