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Another comment about the UplockRe: Gear uplock piston

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dsavarese0812(at)bellsout
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Posted: Mon Oct 05, 2009 4:24 am Post subject: Another comment about the UplockRe: Gear uplock piston

The uplock is a mechanical latching mechanism that is released  by air pressure moving the pin in the uplock outward which releases the  mechanically latched "parrot hook".  If the uplock was not there and you  put the gear selector in neutral, the gear would go limp and drop down out of  the wheel wells.  If you lose air pressure in your main system, the uplocks  hold the gear up and locked until you use the emergency system to blow the gear  down, which releases the "parrot hook" the same way; the uplock pin is moved  outward to mechanically release the parrot hook.

 Dennis

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