On February 26, 2012, about 1036 coordinated universal time, Delta Air Lines flight 143, a Boeing 767-432ER, N829MH, oneÿflight attendant received serious injuriesÿwhile delivering meal service.ÿThe flight was operating under the provisions of 14ÿCFR Part 121 as a scheduled international passenger flight from Frankfurt Airport, Frankfurt, Germany to Detroit Metropolitan Wayne County Airport, Detroit, Michigan. According to flight crew statements, about one hour and thirty minutes into the flight while the airplane was in cruise, one of the flight attendant tripped over a passenger’s bag during meal service and received a serious injury as a result of the fall. Probable Cause: the flight attendant inadvertently tripping over a passenger’s luggage strap that was protruding into the isle.