Thread: Riddle me this, pilots
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  #3  
Old August 23rd 03, 10:51 AM
Steven P. McNicoll
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"Newps" wrote in message
news:ihu1b.227105$Ho3.29390@sccrnsc03...

Once below a certain agl altitude the TCAS will not give and RA but only
a TA.


How does the TCAS know the AGL altitude?