Editing D. B. Cooper (section)

==Aftermath==
===Airport security===
Despite the initiation of the federal [[Federal Air Marshal Service|Sky Marshal Program]] the previous year,<ref name="Wu">{{cite web |last=Wu |first=Annie |title= The history of airport security. |url= http://savvytraveler.publicradio.org/show/features/2000/20000915/security.shtml  |publisher= American Public Media |website=savvytraveler.publicradio.org|archive-url=https://web.archive.org/web/20101206105028/http://savvytraveler.publicradio.org/show/features/2000/20000915/security.shtml |archive-date=December 6, 2010 |access-date= February 14, 2011}}</ref> 31 hijackings were committed in U.S. airspace in 1972; 19 of them were for the specific purpose of extorting money.<ref name="gladwell" /> In 15 of the extortion cases, the hijackers also demanded parachutes.<ref name="gladwell">{{cite magazine |last= Gladwell |first= Malcolm |magazine=The New Yorker |date=October 1, 2001|title= Safety in the skies |url=http://gladwell.com/safety-in-the-skies/ |archive-url=https://web.archive.org/web/20141218130651/http://gladwell.com/safety-in-the-skies/ |archive-date=December 18, 2014 |access-date= February 14, 2011}}</ref> In early 1973, the FAA began requiring airlines to search all passengers and their bags. Amid multiple lawsuits charging that such searches violated [[Fourth Amendment to the United States Constitution|Fourth Amendment]] protections against search and seizure, federal courts ruled that they were acceptable when applied universally and when limited to searches for weapons and explosives.<ref name="Wu" /> Only two hijackings were attempted in 1973, both by psychiatric patients; one hijacker, [[Samuel Byck]], intended to crash the airliner into the [[White House]] to kill President Nixon.{{sfn|Himmelsbach|Worcester|1986|p=120}}

===Aircraft modifications===
[[File:Db Cooper Vane.JPG|thumb|A Cooper vane in the unlocked position]]
Due to multiple "copycat" hijackings in 1972, the FAA required that the exterior of all {{nowrap|Boeing 727}} aircraft be fitted with a spring-loaded device, later dubbed the "[[Cooper vane]]", that prevents lowering of the aft airstair during flight.{{sfn|Himmelsbach|Worcester|1986|p=77}} The device consists of a flat blade of aluminum mounted on a pivot, which is spring-loaded to stay out of the way of the door when the craft is at rest, but aerodynamically rotates into position to prevent the door from being opened when the airplane is traveling at flight speeds. Operation of the vane is automatic and cannot be overridden from within the aircraft.<ref name="Wu" /><ref name="ST">{{cite news | title = D.B. Cooper puzzle: the legend turns 30 | last = Gilmore | first = Susan | date = November 22, 2001 | url = http://archives.seattletimes.nwsource.com/cgi-bin/texis.cgi/web/vortex/display?slug=cooper22m&date=20011122 | work = [[The Seattle Times]] | access-date = January 2, 2008 | archive-date = January 6, 2008 | archive-url = https://web.archive.org/web/20080106083258/http://archives.seattletimes.nwsource.com/cgi-bin/texis.cgi/web/vortex/display?slug=cooper22m&date=20011122 | url-status = live }}</ref> As a direct result of the hijacking, the installation of [[peephole]]s was mandated in all cockpit doors; this enables the cockpit crew to observe passengers without opening the cockpit door.<ref name=":4"/>

===Subsequent history of N467US===
[[File:Boeing 727-51 N838N Piedmont ORD 30.09.79 edited-2.jpg|thumb|N467US, the 727 involved in the 1971 hijacking, in service with [[Piedmont Airlines (1948–1989)|Piedmont Airlines]] as N838N in 1979]]
[[File:Always-wondered-what-happened-to-the-d-b-cooper-727-from-v0-yc2nva87d6zb1.jpg |thumb|right|N467US, the 727 involved in the 1971 hijacking, as Key Air N29KA, being dismantled in Mississippi 1996]]
In 1978, the hijacked 727-100 aircraft was sold by Northwest Orient to [[Piedmont Airlines (1948–1989)|Piedmont Airlines]], where it was re-registered N838N and continued in domestic carrier service.<ref>{{cite web |last1=Kaminski-Morrow |first1=David |title=FBI revives hunt for 727 parachute hijacker 'DB Cooper' |url=https://www.flightglobal.com/fbi-revives-hunt-for-727-parachute-hijacker-db-cooper/78059.article |website=www.flightglobal.com |access-date=August 7, 2022}}</ref> In 1984, it was purchased by the charter company [[Key Airlines]], re-registered N29KA, and incorporated into the Air Force's civilian charter fleet that shuttled workers between [[Nellis Air Force Base]] and the [[Tonopah Test Range]] during the [[Lockheed F-117 Nighthawk|F-117 Nighthawk]] development program.{{sfn|Hengi|2000|pp=56–57}} In 1996, the aircraft was scrapped for parts in a [[Memphis, Tennessee|Memphis]] [[aircraft boneyard]].<ref name=nymagtimeline/>

===Death of Earl J. Cossey===
On April 23, 2013, Earl J. Cossey, who packed the four parachutes that were given to Cooper, was found dead in his home in [[Woodinville, Washington]], a suburb of Seattle. His death was ruled a homicide due to blunt-force trauma to the head. The perpetrator remains unknown.<ref>{{cite web |last=Baumann |first=L |date=May 7, 2013 |title= Man who packed DB Cooper's parachutes ID'd as Woodinville homicide victim |url= http://woodinville.patch.com/groups/police-and-fire/p/homicide-victim-identified-as-earl-cossey-of-woodinville |publisher= Woodinville.Patch.com |archive-url=https://web.archive.org/web/20130906163654/http://woodinville.patch.com/groups/police-and-fire/p/homicide-victim-identified-as-earl-cossey-of-woodinville |archive-date=September 6, 2013 |access-date= May 29, 2013}}</ref> Some commenters alleged possible association with the Cooper case,<ref>{{cite web |last=Smith |first=BA |date=May 4, 2013 |title= Update on the murder of Earl Cossey, an analysis of his role in the DB Cooper case |url=http://themountainnewswa.net/2013/05/04/update-on-the-murder-of-earl-cossey-an-analysis-of-his-role-in-the-db-cooper-case/ |publisher= themountainnewswa.net |archive-url=https://web.archive.org/web/20130623031135/http://themountainnewswa.net/2013/05/04/update-on-the-murder-of-earl-cossey-an-analysis-of-his-role-in-the-db-cooper-case/ |archive-date=June 23, 2013 |access-date=May 29, 2013}}</ref> but authorities responded that they had no reason to believe that any such association exists.<ref>{{cite web |last=Johnson |first=G |date=April 30, 2013 |title= Earl Cossey, DB Cooper parachute packer, ID'd as homicide victim |url= https://www.huffingtonpost.com/2013/04/30/earl-cossey-db-cooper-par_n_3188745.html |publisher= HuffingtonPost.com |archive-url=https://web.archive.org/web/20160305005136/http://www.huffingtonpost.com/2013/04/30/earl-cossey-db-cooper-par_n_3188745.html |archive-date=March 5, 2016 |access-date=May 29, 2013}}</ref> Woodinville officials announced later that burglary was most likely the motive for the crime.<ref>{{cite web |last= Bauman |first= L |date=May 12, 2013 |title=Cossey murder: Woodinville police chief classifies it as burglary |url=http://woodinville.patch.com/groups/police-and-fire/p/earl-cossey-murder-woodinville-police-chief-classifie5175f3af01 |publisher= Woodinville.patch.com |archive-url=https://web.archive.org/web/20131029203313/http://woodinville.patch.com/groups/police-and-fire/p/earl-cossey-murder-woodinville-police-chief-classifie5175f3af01 |archive-date=October 29, 2013 |access-date=October 28, 2013}}</ref>