Webthis includes revising guidance and criteria used for determining significant changes to best ensure that proposed changes to an aircraft are evaluated from a. Webon july 6, 2013, asiana airlines flight 214 crashed short of the runway at san francisco international airport. Webmany other incidents in the past have led to safer flying conditions for us today, as a result of improvements and changes to protocol, laws and technology in planes. Guidance for asiana pilots on use of flight directors during a visual approach; More manual flight for asiana pilots;
