Null exception

[Smokeynz]

So I presume this trimmed version is all that is needed

NOTE this edit cause another error...sigh

private void damageAiControlledPlane(AiActor actorMain)
    {        
         if (actor == null || !(actor is AiAircraft))
              return;
         AiAircraft aircraft = (actor as AiAircraft);
         if (!isAiControlledPlane(aircraft))
              return;
         if (aircraft == null)
              return;
         (actor as AiAircraft).Destroy();             
     }