About: http://webisa.webdatacommons.org/419550767

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Determine the altitude(s) for direction of flight based on terrain, airspace and other considerations???Using the chart and a plotter, measure the True Course (TC) for each leg
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com