AirPlane in Unity 3d [C#]

For the moment i put this code on the empty game object :

 using UnityEngine;
 using System.Collections;
 using UnityEngine.Networking;
 
 
 namespace AirCube
 {
     public class PlayerControl : NetworkBehaviour
     {


         void Update()
         {
             transform.position += transform.forward * Time.deltaTime * 35; // changed with a float
 
             transform.Rotate(Input.GetAxis("Vertical"), 0.0f, -Input.GetAxis("Horizontal"));
         }
 
     }
 }