Centaurus:
And if you then have a engine failure with Flap 40 in level flight at Vref+ 5, you have all the potential for loss of control at low altitude. Just make certain that in the simulator you have practiced engine failures in the Flap 40 configuration as above. Very dangerous indeed.
Horribly danderous. Approach flaps should be used until turning CTL base or final, in the "slot," and final descent has begun.