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How to Drown Your Spark...
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<blockquote data-quote="RLB" data-source="post: 41538" data-attributes="member: 8367"><p>My experience with RTH and hopefully lessons learned - all be it a slow process in my case! First, lost site of drone over heavily wooded area and a low battery warning. I panicked and hit RTH. The drone started back but I never gained sight of it so cancelled RTH and took over manually and flew it into a tree. I did recover the drone after paying a tree service $150 to climb the tree and saw the offending limb off the tree. The drone had been in the tree for 6 days and two days of rain.</p><p>Recovered and dried out after two days I was able to fly it without incident. Lesson learned: don't cancel RTH if you can't see the drone, make sure that RTH is set </p><p>before flight so as to avoid the highest object on the return path. Keep in mind the collision sensors will not work in RTH. Don't allow your remaining flight time put you into a situation where the battery life cannot get the drone back on the ground.</p><p></p><p>Second incident, same or similar mistakes make re battery life and RTH altitude setting. I had flown the drone out of sight behind a tree when the low battery warning came on, hit RTH and it flew into the tree-failed to set RTH altitude before flight. I never saw the drone in the tree, searched over several days and decided that it probably fell into the pond below, never recovered. Now on second Spark and had another RTH incident, low battery hovering against small branches with obstacle warning at 1'. I went over to pick up the drone and the fail safe RTH took over and the drone shot straight up. Fortunately it didn't encounter any branches</p><p>and I was able to take over manually as the battery was down to 10%. At max altitude on RTH I was finally able to start the descent and got it on the ground with @ 6% battery left.</p><p></p><p>Two stupid mistakes, lost one drone. Recommendation: find a big clear open area and become totally familiar with the variables of RTH and practice, practice, practice, practice. Do Not let the remaining battery life get below 25% before you start your inbound flight. Spark battery power at the low end drops like a rock. Best practice suggestions: Ensure that you have a clear landing area of at least 35' in radius, RTH or Dynamic RTH. Ensure that you have a clear approach path to the RTH before T/off. If these two are addressed then RTH is the safest way to get back on the ground if you lose sight of the drone.</p><p></p><p>One dumb *** drone pilot in need of remedial training course; input welcome.</p><p>Bob</p></blockquote><p></p>
[QUOTE="RLB, post: 41538, member: 8367"] My experience with RTH and hopefully lessons learned - all be it a slow process in my case! First, lost site of drone over heavily wooded area and a low battery warning. I panicked and hit RTH. The drone started back but I never gained sight of it so cancelled RTH and took over manually and flew it into a tree. I did recover the drone after paying a tree service $150 to climb the tree and saw the offending limb off the tree. The drone had been in the tree for 6 days and two days of rain. Recovered and dried out after two days I was able to fly it without incident. Lesson learned: don't cancel RTH if you can't see the drone, make sure that RTH is set before flight so as to avoid the highest object on the return path. Keep in mind the collision sensors will not work in RTH. Don't allow your remaining flight time put you into a situation where the battery life cannot get the drone back on the ground. Second incident, same or similar mistakes make re battery life and RTH altitude setting. I had flown the drone out of sight behind a tree when the low battery warning came on, hit RTH and it flew into the tree-failed to set RTH altitude before flight. I never saw the drone in the tree, searched over several days and decided that it probably fell into the pond below, never recovered. Now on second Spark and had another RTH incident, low battery hovering against small branches with obstacle warning at 1'. I went over to pick up the drone and the fail safe RTH took over and the drone shot straight up. Fortunately it didn't encounter any branches and I was able to take over manually as the battery was down to 10%. At max altitude on RTH I was finally able to start the descent and got it on the ground with @ 6% battery left. Two stupid mistakes, lost one drone. Recommendation: find a big clear open area and become totally familiar with the variables of RTH and practice, practice, practice, practice. Do Not let the remaining battery life get below 25% before you start your inbound flight. Spark battery power at the low end drops like a rock. Best practice suggestions: Ensure that you have a clear landing area of at least 35' in radius, RTH or Dynamic RTH. Ensure that you have a clear approach path to the RTH before T/off. If these two are addressed then RTH is the safest way to get back on the ground if you lose sight of the drone. One dumb *** drone pilot in need of remedial training course; input welcome. Bob [/QUOTE]
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