english: EN 12312-1:2013 Aircraft ground support equipment - Specific requirements - Part 1: Passenger stairs, which supersedes EN 12312-1:2001+A1:2009 immediately
non_english: wewewewewewewewewewew (1:31pm est sat aug 30 2003)ewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewe. – by as above