About: http://webisa.webdatacommons.org/291345369

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	As mentioned by other posters, the placing of the orange strap across the viewing window is a sign to ground staff that the door is armed.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net