Posts

Wind: The Greatest Hazard to Aviation Operations

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    In my opinion the most hazardous weather to aviation operations is wind because it can be unpredictable, and a multitude of factors affect its characteristics. You cannot see wind either which makes it even more hazardous. Adverse winds were responsible for 52% of weather-related aircraft incidents from 2000-2011 in part 91 operations and turbulence was 74% in part 121 operations (Eick, 2015). Wind can come in the form of turbulence or wind shear which are the most dangerous to aviation operations. The numbers prove that wind is the biggest hazard in aviation operations.     Wind is created by the horizontal movement of air from high pressure to low pressure across a gradient (PHAK, 2016). It effected by temperature, Coriolis effect, and friction which determine its speed and direction. Turbulence can be created by convective currents near the surface, vertical wind shear, or mountains. Convective currents are caused from the uneven heating or cooling of the eart...

Air Traffic Control: Comparing the Tower to the Air Route Traffic Control Center

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        The airspace that we fly through has to have a control function otherwise the chance that aircraft would collide with each other would be dramatically increased. In the United States the Federal Aviation Administration is in charge of the National Airspace System and controls this air space via the Air Traffic Control system (PHAK,2016). The Air Traffic Control system is broken down into many entities to ensure that one entity isn't overloaded with tasks. To better see how this system is broken down we can look two different entities and how they are similar and different. The entities I have chosen are Air Route Traffic Control Centers (ARTCC) and the Air Traffic Control Tower (ATCT) specifically the Tower component, so let us first look at how they both control their respective airspace.      The Air Route Traffic Control Center is in charge of all air routes beginning above 1200 AGL, IFR flights, and Class A airspace, they provide safe ...

An Airport Environmental Issue: Noise Pollution

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      One of the biggest issues with airport operations is that of the noise created from aircraft and ground equipment. Noise pollution is a serious issue especially when a large airport is located in a densely populated area but it can also effect rural airports too. Noise effects both humans and animals so the more noise reduction technology that is created the better. To best see this issue let us look at Seattle-Tacoma International airport in Washington.      Sea-Tac airport is a major hub for international flights so it sees its share of airline traffic but it is in the middle of the residential areas near Seattle and Tacoma. An article in The Seattle Times explains how the uptick in travel through the airport has created some unhappy residents in the areas surrounding the airport (Gates,2018). The article explains how the approach paths into the airport are over the same residential areas and that the planes are guided in by air traffic controllers ...

Aviation Law: The Aviation Safety Research Act of 1988

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      The Aviation Safety Research Act of 1988(1988) became law November 3, 1988 and contains many sections which are all centralized around the research and improvement of safety in aviation. The law requires the FAA to research fire and smoke resistant material and maintenance technology, research human factors effect on aviation, research medical conditions and the effects, research air traffic controller technology, research fuel system components to better withstand crashes, and appropriates the funding to do so.      I believe this law was instrumental to the aviation industry we know today. Airplanes are now safer from improved aircraft maintenance technology, fire and smoke resistant materials, and from required airframe design testing. In my own job, I see the effects of the improved fire resistant material in our cargo compartments which are required to be keep a fire contained for 195 minutes for Extended Range Twin-Engine Operations (ETOPS)....

ASCI 202: Team-Based Human Factors

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     As a flying crew chief, team-based human factors are an integral part of my job because not only do we fly a two maintainer team but we are part of the aircrew and fall under their crew resource management.  To me, human factors in aviation are defined as the inherit traits of human beings performing aviation tasks that could lead to errors. The FAA defines human factors in maintenance as issues that affect human performance which can be from human psychology, workplace limitations, aircraft design, etc(MX HF Presentation System, 2019).       An example of how human factors can affect a team activity would be during an aircraft tire change where usually a team of 2 or 3 mechanics are needed on bigger jets. On the C-17 we had a team of 5 or 6 because of the complicated process to prepare for the tire change. The challenges of working in a team on a maintenance task can be overwhelming as you get teammates with varying experience, varying moods...

Aviation Security: An Emerging Threat

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    Aviation security is an ever evolving challenge for the aviation industry. As technology continues to progress the tools of deviant actors improve but the security measures also improve to combat them. The the ever changing security risks can lead to emerging threats such as 3D printed weapons. This is a relatively new threat as 3D printers have recently become affordable and easy to acquire. The issue with 3D printed weapons is that they are made of composites and plastics which make them harder to detect on X-rays and other scanning machines. They also may pass off as replica weapon which could make it through security in a checked bag per the TSA rules but if there was an inside worker who could access after it was checked it could be used to hijack a plane by the worker or if the worker were to pass it to someone on the flight. This threat could challenge a few layers of security but there are ways to mitigate it in each of those layers which I will get into next. ...

Aircraft Systems and Flight: System Failure

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     This week I have chosen to cover the oil system of an aircraft, how a failure in that system would effect an aircraft, and some mitigation efforts to reduce the chances of it happening. To begin, the oil system in an aircraft whether it be a reciprocating engine or a jet engine serves essentially the same function. The oil system lubricates the moving parts, cooling by reducing friction and removing heat from the engine, creates a seal between moving parts, and it carries contaminants out of the engine (PHAK, 2016). I would like to specifically address the failure of the oil pump.     The oil pump is the heart of the oil system, it delivers pressurized oil to parts of the engine that require it, below is a diagram of an oil system in an aircraft oil system (PHAK, 2016). An oil pump could fail for many reasons to include; manufacture defect, being clogged with contaminants, improper care, and improper oil le vels (Loss of Oil Pressure Is An Emergency, 2020)....