Yes.
Do not fly.
One can not guarantee the sanity of anyone in control of any vehicle.
Also I find it disgraceful that you describe the F/O as a 'Nut case'.
It is most likely that he had some major problems, but to dismiss him as a person with a serious psychiatric disorder is grossly unfair and probably inaccurate.
Last edited by Mad Monk; 26th Mar 2015 at 18:26.
Reason: Poor spelling.