Windows, Direct Vision:
It has been brought to our attention that some of the DV windows installed in the Westwind fleet are showing signs of cracking / splitting / delaminating on the laminar plane. Part numbers affected are 343017-409, 343017-452 and 343017-97. Please inspect the window for cracking / splitting / delamination along the edge. The seal may have to be removed to see it clearly. Although the DV window is not specifically mentioned in the current revision of the AMM, IAI has determined that if there is this sort of deficiency in the window, it must be replaced. Please see the attached pictures of a window with delamination (dye penetrant was used to clearly show the separation)
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