Heni Posted September 18, 2020 Share Posted September 18, 2020 Hello everyone, Do you think we should turn the NESA heat OFF after having a cracked window in a C130J ? the -1 docs doesn't say any thing about this subject! all it says "If a window is found to be arcing, the NESA system should be turned off. The intense local heating at the spot where the arcing occurs can cause the window to delaminate and crack. The longer arcing occurs, the more opportunity there is for damage to occur." Thanks!! Quote Link to comment Share on other sites More sharing options...
Metalbasher Posted September 23, 2020 Share Posted September 23, 2020 I would think if they are telling to turn it off to avoid cracking, then you would leave it off if it were cracked. Can always submit a TAR/-107 for clear guidance. Quote Link to comment Share on other sites More sharing options...
hehe Posted September 23, 2020 Share Posted September 23, 2020 The heat keeps the window flexible. From what I understood, you keep heat on unless it's arcing to keep the window flexible and not shatter I'll read around my pubs and manuals and see if anything addresses a crack and what to do Quote Link to comment Share on other sites More sharing options...
hehe Posted September 23, 2020 Share Posted September 23, 2020 https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.lockheedmartin.com/content/dam/lockheed-martin/aero/documents/sustainment/csc/service-news/sn-mag-v11-v20/V19N3.pdf&ved=2ahUKEwiXkpqhkYDsAhWPqZ4KHZLBD7kQFjAAegQIEBAC&usg=AOvVaw2phgJef06Y2lZ2x121EmRP This is older and I wouldn't go operating an aircraft off of this but to be honest the windows havent really changed that much and this information should at least give you something "official" from lockheed to start having a conversation with your stan/eval. It talks about cracks in flight. It's what I thought, keeping the window heated is safer than letting it get cold and brittle. Arcing is really only reason I can think to 100% turn it off. Quote Link to comment Share on other sites More sharing options...
Heni Posted September 24, 2020 Author Share Posted September 24, 2020 Thank you all for your replies! I will keep you updated if I have something new concerning this topic Quote Link to comment Share on other sites More sharing options...
BAKRI Posted February 13 Share Posted February 13 WHAT CUSE NASA WINDOWS CRACK? Quote Link to comment Share on other sites More sharing options...
hlg6016 Posted February 14 Share Posted February 14 https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwj4xvSqwpX9AhWWD1kFHSvABJAQFnoECBEQAQ&url=https%3A%2F%2Fwww.lockheedmartin.com%2Fcontent%2Fdam%2Flockheed-martin%2Faero%2Fdocuments%2Fsustainment%2Fcsc%2Fservice-news%2Fsn-mag-v11-v20%2FV19N3.pdf&usg=AOvVaw2phgJef06Y2lZ2x121EmRP Not a T.O. but it's a good place to start. Quote Link to comment Share on other sites More sharing options...
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