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Spark initiated a forced landing - analysis assistance required
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<blockquote data-quote="Yanickma" data-source="post: 17834" data-attributes="member: 3179"><p>Hello all,</p><p></p><p>Today I freaked out a bit because I almost had an accident with the little Sparky. I d like to request some assistance and feedback from you to make sure I understand what happened and to avoid this to happen again.</p><p></p><p>Still new with the Spark, only one month or so of flying it. I was on the edge of a cliff, took off from palm and pushed the drone up and backward (like a dronie shot but done manually with the RC).</p><p></p><p>The cliff was high (couple of hundred meters deep below filled with tropical forest trees. when i finished the shot i was hovering there when suddenly the RC started to emit regular beep beep and the drone started to descend. I didnt panic but started to freak out a bit since it was not responding to go up. I still had control to move one side to another or forward backward but no control on the vertical axe. Luckily enough i was not too far from the edge of the cliff so I was able to take it back just on time to land beside me. If not, it would have slowly gone down the precipice and crash into the trees several hundred of meters below.</p><p></p><p>Important fact, once i flew up and finished my shot, a sudden fog went down and reached the drone in a matter of seconds ( i m in Costa Rica and rain forest weather can change in no time, it went from clear to foggy in less than 30 sec)</p><p></p><p>Reading around I m 90 % sure that this sudden fog triggered the force landing. But I would still like to have your opinions. </p><p></p><p>I just want to make sure I fully understand what happened and all the variables involved.</p><p></p><p>Mostly, I d like to confirm, it is OK to take off a Spark on the edge of a cliff and fly it over a canyon, I mean , that would be kind of lame if the drone could not handle this sudden change of ground reference (ground level at the edge of the cliff vs ground level at the bottom of the canyon). I dont think it would go in force landing just because of that right?</p><p></p><p>Also once it landed and I lowered my eyes back at the app (during the emergency I locked my eyes on the drone only) there was a red compass error message. Not sure if it s a consequence of the issue or a cause. </p><p></p><p>I was 90 km away from home, drone did not ask for compass calibration and I flew 7 other times this day without issue. </p><p></p><p>My thoughts are the issue was primarily caused by the sudden fog, and maybe I did wrong by not calibrating the compass even if the drone was not asking it, but I ll appreciate your input. </p><p></p><p>I added the flight log:</p><p></p><p><a href="https://www.phantomhelp.com/LogViewer/T0OAPTWVOCIZOJHM985E/" target="_blank">DJI Flight Log Viewer - PhantomHelp.com</a></p><p></p><p>I also downloaded the black box and flight controller DAT file, if needed you can let me know.</p><p></p><p>I appreciate all your good help!</p><p></p><p>P.D:</p><p></p><p>This is a snapshot of the video around when the problem started. Please dont bash me too hard, as mentioned, here the fog can be tricky and start in a matter of seconds <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>[ATTACH=full]1701[/ATTACH]</p></blockquote><p></p>
[QUOTE="Yanickma, post: 17834, member: 3179"] Hello all, Today I freaked out a bit because I almost had an accident with the little Sparky. I d like to request some assistance and feedback from you to make sure I understand what happened and to avoid this to happen again. Still new with the Spark, only one month or so of flying it. I was on the edge of a cliff, took off from palm and pushed the drone up and backward (like a dronie shot but done manually with the RC). The cliff was high (couple of hundred meters deep below filled with tropical forest trees. when i finished the shot i was hovering there when suddenly the RC started to emit regular beep beep and the drone started to descend. I didnt panic but started to freak out a bit since it was not responding to go up. I still had control to move one side to another or forward backward but no control on the vertical axe. Luckily enough i was not too far from the edge of the cliff so I was able to take it back just on time to land beside me. If not, it would have slowly gone down the precipice and crash into the trees several hundred of meters below. Important fact, once i flew up and finished my shot, a sudden fog went down and reached the drone in a matter of seconds ( i m in Costa Rica and rain forest weather can change in no time, it went from clear to foggy in less than 30 sec) Reading around I m 90 % sure that this sudden fog triggered the force landing. But I would still like to have your opinions. I just want to make sure I fully understand what happened and all the variables involved. Mostly, I d like to confirm, it is OK to take off a Spark on the edge of a cliff and fly it over a canyon, I mean , that would be kind of lame if the drone could not handle this sudden change of ground reference (ground level at the edge of the cliff vs ground level at the bottom of the canyon). I dont think it would go in force landing just because of that right? Also once it landed and I lowered my eyes back at the app (during the emergency I locked my eyes on the drone only) there was a red compass error message. Not sure if it s a consequence of the issue or a cause. I was 90 km away from home, drone did not ask for compass calibration and I flew 7 other times this day without issue. My thoughts are the issue was primarily caused by the sudden fog, and maybe I did wrong by not calibrating the compass even if the drone was not asking it, but I ll appreciate your input. I added the flight log: [URL="https://www.phantomhelp.com/LogViewer/T0OAPTWVOCIZOJHM985E/"]DJI Flight Log Viewer - PhantomHelp.com[/URL] I also downloaded the black box and flight controller DAT file, if needed you can let me know. I appreciate all your good help! P.D: This is a snapshot of the video around when the problem started. Please dont bash me too hard, as mentioned, here the fog can be tricky and start in a matter of seconds :) [ATTACH=full]1701[/ATTACH] [/QUOTE]
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Spark initiated a forced landing - analysis assistance required