Error Message

Hi Guys

After my crash on fixed wing I am getting pre arm : crash dump data detected because of that I can’t arm the aircraft. How can I clear this data

Is there any one here who has experience such ?

How can this error message be cleared

A crash dump means the flight controller crashed (software-wise, not a crash into the ground) as there some condition like a hardware fault that could not be handled in any normal way.

Preserve the data by ejecting the SDCard.

Before trying to clear it, download the crashdump data and relevant log file.
Post over at ArduPilot and hopefully someone can check it out and tell you what happened.
I would advise NOT to use that flight controller until you know what the issue was and what to do about it.