Round dials also referred to as the analog gauges have been used in aircrafts since the early days of aviation. Broken round dials can have major implications when flying an aircraft. Some of the challenges include the inability to reset the heading indicator which needs to reset after every 15 minutes. As opposed to a glass cockpit where all the information is displayed on a single screen, a pilot using an original cockpit must scan six instruments. Therefore, a faulty glass cockpit can be detected faster than that of round dials (Salvendy & Smith, 2009) . Glass cockpits have more switches than round dials cockpits so then is a need for constant maintenance of the switches because the more the number of switches then higher the probability of operational problem of an aircraft.
Numerous gadgets are used when investigating aviation accidents. One of the most important factors that the investigators use when determining the cause of an accident is photographs. An investigator must have a basic knowledge of photography. Therefore, most handheld digital devices can take a photo in case of an aircraft accident. In an event that these devices are not destroyed during an accident then they play a critical role in the investigation process.
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Data Capture system
FDC (Flight Data Capture) can capture the crewmember flight record and individual aircraft for reporting and local use. The data captured can also be deployed with the FRC module. The history maintained and stored is limitless. The calculation of circle distance in nautical miles based on departure to the destination is made possible by the FDC (Talotta, 1997) . It also captures the flight landings and time, the condition of the flight, non-precision, and precision approaches for the pilot, pilot mission, and remarks description. The down-linking data system is a two-way data link structure which enables the controller to communicate an urgent strategic message to the pilot through the utilization of flight deck visual display. However, this system is not mandatory for private general aviation aircraft because it is not a requirement to file a flight plan.
References
Salvendy, G., & Smith, M. J. (2009). Human Interface and the Management of Information. Information and Interaction: Symposium on Human Interface 2009, Held as Part of HCI International 2009, San Diego, CA, USA, July 19-24, 2009, Proceedings, Part II. New York: Springer Science & Business Media.
Talotta, N. J. (1997). A Field Study of Transponder Performance in General Aviation Aircraft. London: Federal Aviation Administration, William J. Hughes Technical Center.
