Aircard Troubleshooting Flow Chart Above is a flow chart to help you diagnose the reasons why your aircard is failing to communicate. You can download the PDF file below. Aircard Comm Error Troubleshooting Chart.pdf 100 KB Download Related articles Why is my Aircard not Communicating? Aircard Error Codes on SmartLink: Explanation and Resolution What if my aircard is not communicating? What do the alerts mean? How do I replace a 3G aircard with an LTE (4G) aircard? Comments 0 comments Please sign in to leave a comment.