it was i ammmaculately maintained airplane. an airplane doing over 100,000 flight hours and 80 and 90,000 cycles is not an issue as long as it's well-maintained and you couldn't get a better maintenance outfit than lufthansa. >> are there unique weather concerns when you're above the mountains, let's say you're flying at 38,000 feet and all of a sudden you begin this descent, are there weather conditions that could have contributed to this problem? >> the weather was reported to be fine at 38,000 feet. now, whether, for instance there was an icing issue, the pitot tubes, the senators that feed the computerized airplane or its flight data whether they stop of course i wouldn't have thought so. certainly the weather was a factor when it got down low.