Object isn't moving in the direction it is facing

Hi, I have some code in an attempt to begin to model a plane but my problem is that the plane isn’t facing the direction that the force is being applied and I have no idea why.

public override void OnActionReceived(ActionBuffers actions)
    {   


        pitch = actions.DiscreteActions[1];
        yaw = actions.DiscreteActions[2];

        rigidbody.AddTorque(transform.up * yaw * 50f);
        rigidbody.AddTorque(transform.right * pitch * 50f);
        rigidbody.AddRelativeForce(transform.forward * throttle * MaxThrottle);
    }

    public override void Heuristic(in ActionBuffers actionsOut)
    {
        var discreteActionsOut = actionsOut.DiscreteActions;    

        Vector3 forward = Vector3.zero;
        Vector3 left = Vector3.zero;
        Vector3 up = Vector3.zero;
        yaw = 0f;
        pitch = 0f;

        if (Input.GetKey(KeyCode.W)) throttle += throttleIncrement;
        else if (Input.GetKey(KeyCode.S)) throttle -= throttleIncrement;
        throttle = Mathf.Clamp(throttle, 0f, 1f);

        yaw += Input.GetAxis("Mouse X");
        pitch += Input.GetAxis("Mouse Y");

        discreteActionsOut[1] = pitch > 0 ? 1 : (pitch < 0 ? -1 : 0);
        discreteActionsOut[2] = yaw > 0 ? 1 : (yaw < 0 ? -1 : 0);
    }   

Right now the problem isn’t with the AI itself, just some heuristic testing I’ve been trying
Any help would be appreciated

Line 10 should be:

rigidbody.AddRelativeForce(Vector3.forward * throttle * MaxThrottle);

Or:

rigidbody.AddForce(transform.forward * throttle * MaxThrottle);

Thank you very much it worked