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“Safety concerns about wiring systems in airplanes were brought to the forefront of public attention by a midair explosion in 1996 involving a 747 airplane. Ignition of flammable vapors in the fuel tank was the probable cause of that fatal accident, and the most likely source was a wiring failure that allowed a spark to enter the fuel tank.
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Aircraft electrical system schematic. The electrical system generally consist of a battery, generator or alternator , switches, circuit breakers and instruments such as voltmeters and ammeters . Back up electrical supply can be provided by a ram air turbine (RAT) or Hydrazine powered turbines.
A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.
In the United States, the Federal Aviation Administration (FAA) issues Technical Standard Orders (TSOs) regarding equipment used on civil aircraft. The TSO for aviation headsets is C139, which includes requirements to withstand extreme heat and cold, decompression, and electromagnetic interference. [14]
A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.
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Title of the Boeing T-43A Flight Manual. An aircraft flight manual (AFM) is a paper book or electronic information set containing information required to operate an aircraft of certain type or particular aircraft of that type (each AFM is tailored for a specific aircraft, though aircraft of the same type naturally have very similar AFMs).