NEW : Delta cancelations only related to MD-88 , not MD-90s . NEW : The jet debuted in 1980 from McDonnell-Douglas , which was purchased by rival Boeing in 1997 . 275 Delta flights were canceled Thursday for safety inspections . American Airlines canceled 318 flights Wednesday to inspect MD-80 aircraft . Comment:
NEW : Delta cancelations only related to MD-88 , not MD-90s . NEW : 275 Delta flights were canceled Thursday for safety inspections . American Airlines canceled 318 flights Wednesday to inspect MD-80 aircraft . Comment: