Time sequence of AIA/SDO 171Å images of the active region NOAA 11429 (time interval, 12 s; image scale, 0.6.̋per pixel). The location of the detected flare with respect to Heliographic coordinates (in degrees) is: −40, 21. Partial 171Å images during 12:22:36 UT–12:31:00 UT show the coronal loop appearance and the temporal evolution of the flare ascending phase. The red contour in panel 1 represents magnetic loop (L1). Panel 2 shows the L2 loop that appeared, and the last panel demonstrates the time when the L1 and L2 loops widened and the evident magnetic reconnection started between them.