NEW : Delta cancelations only related to MD-88 , not MD-90s . NEW American Airlines , meanwhile , is examining wiring secured to its MD-80 aircraft . : its estimated 2,300 Delta flights were canceled Thursday for safety inspections . Delta Air Lines canceled 318 flights Wednesday to inspect MD-80 aircraft . American cancels 275 of its estimated 2,300 flights scheduled for Wednesday .
NEW : Delta cancelations only related to MD-88 , not MD-90s . NEW : its estimated 2,300 Delta flights were canceled Thursday for safety inspections . Delta Air Lines canceled 318 flights Wednesday to inspect MD-80 aircraft . American cancels 275 of its estimated 2,300 flights scheduled for Wednesday .