Squat interlock

Date:         18 Jun 99 01:40:00 
From:         jbtex@aol.comkeinspam (JbTex)
Organization: AOL http://www.aol.com
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I once heard pilots talking about a "squat switch" in the main
landing gear of airliners.  They mentioned that it prevented
the deployment of the thrust-reversers until the landing aircraft's
weight settled onto the landing gear.  If this is true, are the
armed spoilers also kept retracted by this switch, or must they
deploy prior to the full "squat"?  Also, are there other systems
controlled by squat/not-squat status?
Thanks