The present invention includes an apparatus for {TAIL ~ an active/inactive door system} wherein an inactive door lock prevents the locking of an active door lock unless the inactive door lock is first engaged in {HEAD ~ a locking position} 
The present invention includes an apparatus for { TAIL ~ an active / inactive door system } wherein an inactive door lock prevents the locking of an active door lock unless the inactive door lock is first engaged in { HEAD ~ a locking position }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD