Download or read book Aircraft Midair Collisions a Continuing Problem Department of Transportation written by United States. General Accounting Office and published by . This book was released on 1974 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Midair Collisions in U S Civil Aviation 1968 written by United States. National Transportation Safety Board and published by . This book was released on 1969 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Midair Collisions in U S Civil Aviation 1968 written by and published by . This book was released on 1969 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Midair Collisions in U S Civil Flying calendar Years 1948 1957 written by and published by . This book was released on 1958 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book To See Or Not to See written by and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The medical records of airmen involved in midair collisions from 1970 through 1973 were reviewed and compared with two other groups of pilots: (1) pilots involved in other types of accidents and (2) pilots without any accident records. There is nothing in the results to indicate that the pilots with visual corrections are a greater risk.
Download or read book Near Midair Collisions as an Indicator of General Aviation Collision Risk written by H. Paul Shuch and published by . This book was released on 1990 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Conventional wisdom suggests aircraft midair collisions to be random events, governed by the laws of Brownian Motion, and best analyzed by stochastic methods. An alternative hypothesis, that such accidents are deterministic in nature, and that specific factors leading to midair collisions can be identified and mitigated, forms the basis for this Dissertation. A predictive model using case control theory is developed for assessing Risk Index, a criterion measure of midair collision likelihood, for any General Aviation flight, actual or hypothetical. Generating the model requires statistical validation of two independent near midair collision databases, and identifying within them those aircraft, aircrew and airspace characteristics most closely associated with collision risk. Calibration of the model shows reality to fall somewhere between the stochastic and deterministic assumptions. A statistically significant correlation is found between predicted and observed Risk Index for a sizable random sample of flights, with a resulting Coefficient of Determination of 0.25. This suggests that we have identified 25% of the source of variance in midair collision risk, the remaining 75% being random. Therefore we can realistically hope to reduce midair collisions by roughly 25%. Strategies for mitigating the identified causal factors are proposed. Measures to reduce the random, remaining 75% of collision risk are also explored. However, these appear to require a significant overhaul of Air Traffic Control procedures, which must be approached with caution, to guard against the attendant possibility of curtailing capacity in the Air Transportation System."--Page 1-2
Download or read book An Investigation of Some Paramters Related to Midair Collisions of Aircraft written by R. Byron Fisher and published by . This book was released on 1957 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Near Midair Collision Report of 1968 written by United States. Near Midair Collision Study Group and published by . This book was released on 1969 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Briefs of Accidents Involving Midair Collisions U S General Aviation written by and published by . This book was released on 1979 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Science of a Plane Crash written by Carol S. Surges and published by Cherry Lake. This book was released on 2014-08-01 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the science behind plane crashes. The chapters examine the worst plane crashes in history, explain how aircraft fail, and show how scientists and engineers are designing safer aircraft. Diagrams, charts, and photos provide opportunities to evaluate and understand the scientific concepts involved.
Download or read book Midair Collision Potential written by and published by . This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircraft Collision Models written by Shinsuke Endoh and published by . This book was released on 1982 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: The threat of midair collisions is one of the most serious problems facing the air traffic control system and has been studied by many researchers. The gas model is one of the models which describe the expected frequency of midair collisions. In this paper, the gas model which has been used, so far, to deal only with simple cases is extended to a generalized form, and some special types of collision models, such as the overtaking model, are deduced from this generalized model. The effects of the probability distributions of aircraft direction and altitude on the frequency of collisions are also analyzed. The results in this paper can be applied to evaluate the frequency of conflicts as well as that of collisions. In this paper, an aircraft is represented as a circular cylinder, and a collision is described as an overlap of two cylinders. If the size of the cylinder is expanded to the volume of the protected airspace of an aircraft, an overlap of two cylinders means a conflict. Therefore, with a slight modification, the results can be used to analyze the frequency of conflicts. This flexibility gives the models of this paper an important potential for application to a future air traffic control system. The FAA is currently developing a new type of air traffic control system called AERA (automated en route air traffic control). AERA is expected to reduce the workload of human controllers and expand the capacity of airspace using new computer systems and better communication links. When this system is fully implemented, aircraft will be able to fly under fewer restrictions. However, if many aircraft are flying on random routes, the frequency of potential conflicts the computer system should handle becomes high. Therefore, the frequency of potential conflicts under various circumstances should be calculated in order to estimate the computer workload before full implementation of the system. The models developed in this paper may be helpful in this evaluation. The consequences of actual collisions are, of course, grave. Fortunately, the average number of such collisions per year has remained relatively small. According to an FAA Report (Report of the FAA Task Force on Aircraft Separation Assurance, Jan. 1979), the average number of midair collisions reported to NTSB from 1974 through 1978 was 33 per year. Most midair collisions have occurred between small general aviation aircraft operating under VFR. However, the report also states that there were 227 near midair collision reports in 1975 alone, and that air carriers were involved in 68 of these cases. (According to the report, a near midair collision is an incident which would probably have resulted in a collision if no action had been taken by either pilot. Closest proximity of less than 500 ft would usually be required for a near midair collision report.) Although the number of conflicts is not available in the report, it is clearly far greater than the number of near midair collisions considering the difference of airspace volumes involved. The outline of this thesis is as follows. In Chapter 2, we present an overview of two aircraft collision models, the Reich model and the gas model, which have been the most important ones in this field. In Chapter 3, we develop some extensions of the gas model including a generalized two-dimensional gas model, an overtaking model and a three dimensional gas model. In Chapter 4, we develop an aircraft collision model which does not assume the uniformity of aircraft distribution. The conclusions of this thesis are summarized in Chapter 5.
Download or read book Aircraft Midair Collisions written by United States Accounting Office (GAO) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-17 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft Midair Collisions: A Continuing Problem
Download or read book Near Midair Collisions Between Military and Civilian Aircraft written by United States. Congress. House. Committee on Government Operations. Government Activities and Transportation Subcommittee and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book To See Or Not to See written by and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book We Are Going In written by Mike Nelson and published by AuthorHouse. This book was released on 2012-04 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author gives an account of the circumstances and people involved in a midair collision on June 30, 1956 over the Grand Canyon between two airliners, a United Air Lines Douglas DC-7 and a TWA Lockheed Constellation.
Download or read book The Crash of Piedmont Airlines Flight 22 written by Paul D. Houle and published by McFarland. This book was released on 2016-01-05 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Against a backdrop of inadequate funding, misplaced priorities and a lack of manpower, American commercial aviation in the 1960s was in a perilous state. In July 1967, when a Piedmont Airlines Boeing 727 collided with a Cessna 310 over Hendersonville, North Carolina, killing 82 people, the industry was in crisis. Congress called hearings on aviation safety and government and union officials pressured President Lyndon Johnson to request increased funding for aviation safety. But the National Transportation Safety Board's probe into the crash was flawed from the start. The investigative team was made up of individuals whose companies had certain interests in the outcome. The lead investigator was the brother of the vice president of Piedmont Airlines. In an effort to shift blame from the government and Piedmont, critical conversations recorded on tape never made it into the NTSB's report. Maintenance and training records, as well as industry warnings of the 727's operational limitations, were also omitted. This book reveals the true story of the investigation: what was left out and why.
