Using APM from CX-20 (open source) version 2.52, encountered few drops in Alt-Hold mode - copter just drops out of the sky, I've tried analyzing the logs yet can't make solid conclusion to what is wrong ?
I've recently assembled a 450 copter using old APM 2.5, I've tried both 3.2.1 (latest supported by APM) and 3.15 yet I'm missing some parameters in full parameter list which are documented in the wiki and I can see them on Pixhawks in my other set
Hope someone can a look at the log file and suggest what I should look into.
I've been playing with the copter a bit and towards end of the battery wanted to do some "jumps", after bringing it to stabilize I gave full throttle up and after f