BACKGROUND Accidents in degraded visibility continue to account for a disproportionately large number of fatal crashes and fatalities in general aviation (GA). However, the relatively small percentage of these crashes annually suggests that even a small reduction in the number of crashes can result in a large reduction in associated fatalities. OBJECTIVE This study identified risk factors ass...

This paper introduces an integrated framework and software platform that uses a three layer approach to modeling complex systems. The multi-layer PRA approach implemented in IRIS (Integrated Risk Information System) combines the power of Event Sequence Diagrams and Fault Trees for modeling risk scenarios and system risks and hazards, with the flexibility of Bayesian Belief Networks for modeling...

Sociotechnical systems are those which rely not only on technology but on humans and social organisation for their adequate functioning. The analysis of sociotechnical systems poses the particular challenge of synthesising methods appropriate to formerly separate scientific disciplines. One result is that prominent features of the systems are often missed during analysis. This paper points to s...

We analyse the `probable cause' of the 1979 Chicago DC-10 accident using a minimal formalism, and find an omission. The omission is contained in the body of the report. This omission had consequences for the public discussion of this accident, which we show. We conclude that formalism helps in accident reporting by enabling simple consistency and omission checks. We then present a quick overvie...

Safety assurance is of paramount importance in the air transportation system. In this paper, we analyze historical passenger airline accidents that happened from 1982 to 2006 as reported National Transportation Board (NTSB) aviation accident database. A four-step procedure formulated construct a Bayesian network capture causal relationships embedded sequences these accidents. First all, with re...

This paper proposes novel Fuel Cell Auxiliary Power Unit (FCAPU) for J150+ aircraft application. The primary version of APU in J150+ aircraft is a gas turbine Auxiliary Power Unit (APU) which is based on gas turbine jet engine but in the suggested FCAPU, the generated electrical power is achieved from chemical energy with higher efficiency. The Solid Oxide Fuel Cell (SOFC) technology is used to...

The subject of research in the article is approaches to improving onboard equipment a search and rescue aircraft (AC). purpose study develop proposals for technical means searching that have suffered an accident, namely video surveillance systems information transmission control centers (CC) operation, based on analysis Rules Search Rescue Support Flights State Aviation Ukraine foreign experien...

Abstract In these times, dominated by innovation, technology is an important asset in optimizing maintenance, aircraft operations and even the investigation process of aviation accidents, with unprecedented results so far. All information related to aircraft, generated over time, can be included a database, order analyzed for better technical insights. The same approach applied analyzing eviden...

national airport (LAX) cleared a commuter aircraft to position and hold on runway 24L while she worked to clear other aircraft to cross the other end of the runway. There were several communications delays because one of the other aircraft was on the wrong radio frequency. Visibility was poor at twilight because of haze and glare. The controller’s workload was considered moderate by air traffic...