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Old 06-28-2013, 08:09 AM   #4
AlphaOneSix
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It's a combination of weight and over- or under-servicing the nitrogen in the nose strut. There is a set pressure for the struts when the aircraft is on jacks, but it seems like many places just do it on the ground, which leads to varying amounts of pressure in the strut. Also, as mentioned, weight on the aircraft will have quite an effect. Where I work, if we can't use jacks for whatever reason, we try to get the nose jack point (next to the strut) approx. 36 inches off the ground when the aircraft is empty except for fuel (maybe half-full of fuel).
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