Sit on your hands.
During my 12 years on the 320 I have found it to be a reliable machine.
From time to time quite strange warnings have occured, the best result has been achieved by sitting on my hands for a few seconds and reviewing the
warnings generated.
Often during those seconds the warnings just dissapear, if they don't then think wether any ECAM makes sense, then take action.
390
Keen to use superior experience rather than superior skill.