APS provides full scale aircraft interior LOPA design and aircraft interior reconfiguration for all types of commercial aircrafts and private jets. Location of Passenger Accommodations (LOPA) is an engineering diagram outlining the aircraft’s cabin interior that includes, but is not limited to, locations of passenger and crew seats, emergency equipment, lavatories, galleys, and exits. A detailed LOPA leads the reviewer through the complete aircraft interior design/layout and is the document that certifies the interior components and installation.