Bare in mind that half deflection on the 320 is equivalent to full deflection on the 319 (except for the extra 5 degrees on spoiler 2 when not in conf 3).
I've had a real positive windshear at 39000' over Paris - we went from a 40 kt tailwind to a 20 kt in a couple of seconds whilst flying at M0.78. The most effective, safest initial action is to pull speed and select it back (this changes the thrust mode and ATHR is far more responsive. Then we slowly used some speed brakes. We didn't overspeed! In FCTM take note it says if the trend arrow reaches or slightly exceeds Vmo/Mmo then go speedbrakes and THEN selected speed. It goes on to say if it significantly exceeds Vmo or Mmo i.e. it's happened - pull speed and select lower, consider AP disconnect and use speedbrakes with care considering the pitch up moment whilst close to the ceiling.
Ultimately, do use speed brakes but do so with care - bring them out slowly. Move through the flightdeck like it's filled with treacle!
Last edited by WhyByFlier; 19th June 2013 at 08:53.