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Method for diagnosing degradation in aircraft wiring

  • US 20030105598A1
  • Filed: 07/29/2002
  • Published: 06/05/2003
  • Est. Priority Date: 12/08/1999
  • Status: Active Grant
First Claim
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1. A method of on-line diagnosis of insulation degradation in a portion of an aircraft wiring cable comprising the steps of:

  • i) measuring the current flow at two locations on said cable utilizing an optical current sensor with a bandwidth of dc to 50 kHz;

    ii) determining the current flow difference between said two locations at one or more frequencies in the range 10 kHz to 50 kHz;

    iii) analyzing the results of the current flow difference to locate a potential cable wiring fault.

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