This has happened twice. I activate RTL mode just to check it out. There was no issue happening on both occasions. I have RTL set on a separate channel /switch (channel 7) in mission planner. My other 6 modes are set using channel 5. After rearming and take off the drone initiates a landing mode where it does not accept any throttle command and just lands followed by a shutdown of motors. It does not return to where it was armed. GPS working and active during this time. I don't have the Landing mode as a selection in mission planner.
Wanted to add after the initial RTL I re powered the quad prior to arming again. What I haven't tried was a reset of the Pixhawk unit. It almost seems that the Pixhawk doesn't clear the landing command from the RTL mode being activated even after re-powering.
Both times this happened was a few days between each other. Wondering if the memory of the Pixhawk is not being cleared with the re-powering.
Wanted to add after the initial RTL I re powered the quad prior to arming again. What I haven't tried was a reset of the Pixhawk unit. It almost seems that the Pixhawk doesn't clear the landing command from the RTL mode being activated even after re-powering.
Both times this happened was a few days between each other. Wondering if the memory of the Pixhawk is not being cleared with the re-powering.
sorry can't help.