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The eighth article in the series Electrical Wire Interconnection Systems (EWIS) Service Life Extension Programs (SLEPs) discusses the Enhanced Zonal Analysis Procedures (EZAP) process which aims to improve maintenance and inspection programs for all EWIS components. The EZAP process tailors the frequency of inspections based on the determined environmental conditions of a particular zone.

The EZAP procedure, originally developed by the FAA back in 2007, should be designed to maintain an aircraft’s EWIS airworthiness. This is achieved through defining general guidance checklists throughout the aircraft and inspection intervals. The EZAP logic below provides a step-by-step process for determining the proper inspection procedures.

Read the rest of the article here.