Power lines constitute a great thread for aircraft flight safety. Digital camera based methods consider these power lines as digital lines and edges which are desired to be detected using line and edge detectors. EDLines, LSD and Hough Transform are the best line detection methods that are known in the literature. In this study, in order to determine the power lines for aircraft safety, methods of EDLines, LSD and Hough Transform are considered. The paper starts by briefly describing the methods, then continues with their performance analysis. Finally, the results are discussed. EDLines method is observed to provide higher accuracy among the three methods. In addition, it produces faster results. Consequently, EDLines method is expected to be widely used in aircraft safety applications.