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Thread: What causes this large GE90 VIB difference?
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Old 24th March 2017 | 00:12
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Jet II
 
Joined: Jan 2002
Posts: 1,271
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From: West Country
Its not actually that large - perfectly within limits (max 4 units). As to what causes the difference, well it could be anything from engines of a different age to dirty blades.
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