b737-300 electrical
Join Date: Apr 2004
Location: Dorset UK
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The Circuit breaker panels are arranged in a grid pattern, so to locate a particular CB, a check list or MEL procedure would say H5 for example, and the CB would be in row H and be the 5th one along.
Hope this helps.
Hope this helps.
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Join Date: Jan 2023
Location: Iran
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dixi188, very many thanks for your response,however the number (Grid No) is not as simple as you mentioned and some sort of more complex alpha-numerical code such as "L010" is used in WDM.so do you have any idea on specific document to be consulted to find thorough explanation of such alpha-numerical coding?
