September 9, 200619 yr This problem has occured several times during the decent of my flight. After passing through 10,000 I usually open up vnav pg3 to adjust the speed from 240 to one that is lower depending on conditions. After pushing the exec button the speed usually doesn't change for a couple minutes. If I push DES DIR fs9 completely locks up. I'm unable to minimize out and the screen is frozen with fs9. If anyone knows what I'm doing wrong or what I can do to fix it let me know. Thank you!- Tim Schaff
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