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  1. Is it a rule?
  2. Why left?
  3. I mean why the pilot in common sits on the left?
  4. What is the superiority of the left side?
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  • 2
    $\begingroup$ Possible duplicate of Why does an airplane captain sit in the left seat? $\endgroup$ – MJeffryes Nov 1 '17 at 17:42
  • $\begingroup$ In helicopters the PiC is often on the right side. $\endgroup$ – DeltaLima Nov 1 '17 at 17:58
  • $\begingroup$ @Arian are you talking about helicopters or airplanes? $\endgroup$ – Farhan Nov 1 '17 at 18:12
  • $\begingroup$ @Farhan airplane $\endgroup$ – Arian Nov 1 '17 at 18:49
  • $\begingroup$ Airplane question has already been asked making yours a duplicate. $\endgroup$ – Farhan Nov 1 '17 at 19:23