Black Line Edge The Northwest flight's altitude, had intercepted its flight course at a 90-degree attitude and had affected other plane within the region at the time. But it begged the query: why, if it were so severe, had they not succumbed to a similar destiny? Clear air turbulence for all its houses, had grow to be seen to the Federal Aviation Agency. Although the L-188 had greater than exceeded its structural expectancies, it differed from different propeller airliners, since it represented, to a degree, transition era..

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