Well there is AD 2012-13-05 calling for the replacement of the oxygen hoses in the cockpit. This was brought about by a ground fire on a foreign carrier that burned a hole in the side of the fuselage on the right side. Seems a metal spring in the hose chaffed and made an electrical arc. The AD was issued on August 16, 2012 and gives the US operators 18 months to comply. The mandatory comply by date would be at the end of February 2014.