PPRuNe Forums - View Single Post - Boeing uncommanded nosewheel steering events
Old 12th Jan 2014, 01:29
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Centaurus
 
Join Date: Jun 2000
Location: Australia
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Back in the 80's we had severe nosewheel shimmy problems on our 737-200's. On a take off from Manila very severe shimmy took place just as we reached take off thrust. There was a loud cracking noise in the nose-wheel area, we momentarily lost steering control and lost A system. Came to grinding halt from a maximum speed attained of about 30 knots.

The shimmy was so severe it broke the nosewheel scissors linkage which in turn snapped the A System Hydraulic line to the nose-wheel.
A few weeks later a similar severe shimmy occurred to another of our 737-200's soon after touch down. Both nose wheel tyres burst. If I recall correctly the defects were traced to faulty retreads on the nosewheels.
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