City Code Chapter Map 1 Portland International Airport Sign ExceptionMap 1 Portland International Airport Sign ExceptionMap 2 Portland International Airport Sign ExceptionMap 2 Portland International Airport Sign ExceptionMap 3 Portland International Airport Sign ExceptionMap 3 Portland International Airport Sign ExceptionMap 4 Portland International Airport Sign ExceptionMap 4 Portland International Airport Sign ExceptionMap 5 Portland International Airport Sign ExceptionMap 5 Portland International Airport Sign Exception