AN EgyptAir airliner slid off the runway while landing at Harare airport on Wednesday, injuring some of the 86 passengers aboard. They said the Boeing 767 had skidded into sand as it landed in heavy rain in the early hours. The incident is the latest in a string of misfortunes to hit the airline. An EgyptAir Boeing 767 crashed off the coast of Massachusetts on October 31, killing all 217 people on board. Investigators have yet to identify the cause of the disaster.