Christopher90
![](https://forum44.djicdn.com/data/attachment/common/1c/common_35_usergroup_icon.png) New
United States
Offline
|
Like the title says, I experienced something extremely weird, and potentially very dangerous on 4th of July. Just to be clear, my drone is fine, this is not one of those "my drone broke and its YOUR fault!" kind of thread. But it very well could have been.
First som backstory. I crashed my drone about a month ago. It was my own fault, and I paid for repairs at the California DJI Repair Center. I received my drone back (or a swap unit) on June 27th. I paired it with my existing controller successfully, and had a few uneventful flights after this.
Fast forward to 4th of July. I am about to film the fireworks in Jacksonville, FL. I am alone at the time, but I have a friend who also own a Mavic Pro, who did the same thing. We were about a quarter of a mile from each other, and didnt realize what (possibly) have happened until we both shared our stories a few days after the incident(s).
MY STORY:
I take off with 9 satellites locked, and a "ready to go" message on my controller. About 1 minute into my flight, I get a compass error, immediately followed by a IMU Heading exception (in flight) Please switch to heading mode if aircraft behave abnormally). At this time I am about 70 meters from my position, and at an altitude of 45 meters. Fortunately I look up to regain a visual position on my drone, and I see it moving at full sport-mode speed to the side, without me doing any input at all. I input the opposite inputs that what it is doing to try and counter its movement, as it is flying towards a building. Fortunately, it stops, and presumaly hovers just fine. I fly back to my own position, land, restart everything, and take off again. For this flight, everything behaved normally.
At first, I assumed this was because I "only" had 9 satellites connected, and somehow it was not enough to get a good solution, but after hearing my friends story, I now believe differently:
HIS STORY:
He took off about the same time as me (I have not seen his flight record of the flight yet, so some of this is assumptions for now). While flying, he was looking at the video feed, and suddendly it started to become distorted, as if the signal was interfered, or weak. His distance to his drone was not much more than at most a few hundred meters at this time. Suddendly, he sees a COMPLETELY different picture on his display, as if he is watching a different video feed. It is similar of course, but from a very different position (which coincides with the fact that I was in a different position). This is confusing for him, so he tried to maneuver the drone, but since the video feed does not match up with the position of his drone, he loses his visual position of his own drone in the confusion. At this time, he looks back down at the video feed and tried to locate his positon by video or by the map. He is unable to do this immediately, and makes inputs to the controller to move the drone to get a better view, or recognize some feature to place his position.
After making these inputs, he suddendly loses the video feed, and it jumps back to his own drone feed. The story continues after this, but I am going to skip those parts for now, as they are not relevant to the topic of this thread:
tl;dr
Another RC disconnected from his own drone, and connected to mine, in air, without being previously paired to my drone.
Have any of you ever experienced something similar to this? And I assume this is not supposed to happen? Does DJI have any comment, or would like to review our records to see what has happened?
|
|