Captioning sponsored by cbs this is the cbs evening news with scott pelley. Goo pelley good evening. We learned today that Asiana Airlines flight 214 was flying far too slowly in the seconds before it crashed while attempting to land in San Francisco. Hecky, as investigators theyinued to check every square speedf the wreckage, they told us the landing speed of the typing 777 was nearly 23 below what is typical for that type of ng traft. What they are still trying to answer tonight is why. When ea of focus is the pilot who was flying the plane when it crashed. It was the first time he attempted to land a 777 at the portfrancisco airport. We have a series of reports tonight and we will begin with John Blackstone in San Francisco. John . Pilotsorter scott, the four pilots who were aboard this plane are being interviewed today by investigators for the bo National Transportation safety board. Icia until those interviews are ittllete, n. T. S. B. Officials are saying little about the pilots