Today, I had a couple of strange events while doing a test flight. Tested a ROI, a short WP mission, and a RTL, everything worked as expected, except on landing only one arm came down. I cycled it a few times, but it wouldn't budge. So I hand caught the one landing gear arm, disarmed it, then tried the upside down trick where you flip it and then cycle the gear switch, after about 4 tries, the second gear came down(up). Changed to the 2nd battery, but the H520 would not connect, I kept getting the "timed out" message. I must have tried it 20 times also resetting all links. No difference. Left the test field and tried it at home, still no luck. Before people ask the obvious questions - had done a compass calibration, 2nd battery was fully charged and the aircraft turned on normally, I cycled the ST16s on/off several times. I was in an open field, no steel, concrete, antennas, HV lines nearby... Any suggestions?
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