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Showing results for tags 'data input failure'.
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As I was inbound to Atlanta from Germany I discovered the Captains CDU panel no longer accepted any key inputs. I tried both the panel keys and the Desktop keyboard. Not a huge problem as I was no longer using the LNav or LNav function to fly the aircraft but became a little concerned when I was prompted to configure the vRef page. What was puzzling was all the LSK and page buttons were working, I just couldn't input any data. After I parked the airplane and shut the engines down, I began to troubleshoot the problem. It seems the FO CDU was working perfectly, only the Captains CDU didn't. This was a first for me. Anyone else have this problem?