KonaB777, the inertia reel system you are refering too is probably the rope I was talking about. From the name of it I am assuming it's a rope that is wound up and is only long enough to reach the ground, so the pilot or other cockpit escapees grab the rope then jump. The reel system provides for a controlled descent until the rope runs out, just short of the ground. Now, I am just assuming this and this is what I picture. If I am wrong someone please correct me.