The answer to the Jet Blue question is: "None what so ever" The gear was twisted because of a failure in the steering mechanism and nothing could have brought it back into line. As it turned out, the gear survived and the a/c was skilfully brought to a safe halt by a pilot earning his salary. And, I have to say, you can read all about it in the PPRuNE archives.
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"I tell you, we are here on Earth to fart around, and don't let anybody tell you any different." Kurt Vonnegut, Jr.