Hi,
Zorin_75
It didn't look much like a methodic attempt at troubleshooting though...
These pilots have behaved like small children
Indeed .. in presence of a toy (to awaken the sens of curiosity) with levers and buttons of all colors a child will operate them out of curiosity
If its action on a lever will give a result (eg music) it will start its work on the same lever for a while
If there is no immediate result .. it will handle quicly one after the other without interruption the levers and buttons and will be frustrated
This is exactly what makes these pilots