question for you what role did the faulty tubes play? if they were iced over. they knew they were bad tubes and they didn t replace them when they didn t replace them and it could have given error readings and could give false impressions as to how fast the airplane is flying. heather: thank you so much for your insight. thank you. we did some research and flight crew error got the blame in some other big crashes. on march 27, 1977 a pan am flight collided with a klm aircraft that took off without proper clearance and 327 people died and then a flight was shot down when it entered soviet air
computers, and in fact there are some indications that the pilots did not act properly during this situation and they could carry some of the blame. there are victims families, groups who are pressing lawsuits and they tend to agree with that. we ll see a final report over the summer where conclusions will be made and we ll have more indications of really what happened. shannon: thank you, greg. we did a about it of a research, found that flight crew error got the blame in some other big crashess including an incident march 27th, 1977, a pan am flight collided with a klm royal flight. the klm aircraft apparently took off without proper clearance. 335 people died. on september 1st 1983 a korean airlines flight was shot down when it entered soviet air space, 269 people died on that flight. and on august 6th, 1997 another korean airlines flight crashed when the captain did not follow proper approach landing procedures. 228 people died in that accide