Editing Space Shuttle Enterprise (section)

==Construction milestones==
{| class="wikitable"
|-
! scope="col" style="background:#efefef;" scope=col | Date
! scope="col" style="background:#efefef;" scope=col | Milestone<ref>{{cite press release |url=https://ntrs.nasa.gov/search.jsp?R=19760025136 |title=Shuttle roll-out set for 17 September 1976 |publisher=NASA News |first1=David |last1=Garrett |first2=Bob |last2=Gordon |date=August 25, 1976 |access-date=June 16, 2013 |id=76N-32224 |archive-date=May 8, 2015 |archive-url=https://web.archive.org/web/20150508081600/http://ntrs.nasa.gov/search.jsp?R=19760025136 |url-status=live }}</ref>
|-
| 1972 July 26
| Contract Award to [[North American Rockwell]]
|-
| 1972 August 9
| Construction authorization from NASA
|-
| 1974 June 4
| Start structural assembly of crew module at [[Downey, California|Downey]] plant
|-
| 1974 August 26
| Start structural assembly of aft fuselage at Downey plant
|-
| 1975 March 27
| Mid fuselage arrives at Palmdale from [[General Dynamics]]
|-
| 1975 May 23
| Wings arrive at Palmdale from [[Grumman]]
|-
| 1975 May 25
| Vertical stabilizer arrives at Palmdale from [[Fairchild Republic]]
|-
| 1975 August 25
| Start of Final Assembly
|-
| 1975 September 9
| Aft fuselage on dock, Palmdale
|-
| 1975 October 31
| Lower forward fuselage on dock, Palmdale
|-
| 1975 December 1
| Upper forward fuselage on dock, Palmdale
|-
| 1976 January 16
| Crew module on dock, Palmdale
|-
| 1976 March 3
| Payload bay doors on dock, Palmdale
|-
| 1976 March 12
| Complete final assembly and closeout systems installation
|-
| 1976 March 15
| Start functional checkout
|-
| 1976 June
| Complete functional checkout, start ground vibration and proof load tests
|-
| 1976 September 17
| Rollout from Palmdale<ref>{{cite news |url=https://www.youtube.com/watch?v=rKud6LngorQ |archive-url=https://ghostarchive.org/varchive/youtube/20211211/rKud6LngorQ |archive-date=December 11, 2021 |url-status=live |title=Space Shuttle program orbiter 101 / Enterprise rollout ceremony September 17–18, 1976 |work=[[YouTube]] |author=PeriscopeFilm |date=January 13, 2021 |access-date=February 14, 2021}}{{cbignore}}</ref>
|-
| 1976 October–November
| Start systems retest, complete integrated systems checkout
|-
| 1977 February 18
| First captive flight
|-
| 1977 June 18
| First crewed captive flight<ref name="nasasf20120427">{{cite news |url=http://www.nasaspaceflight.com/2012/04/space-shuttle-enterprise-the-orbiter-that-started-it-all/ |title=Space Shuttle Enterprise – The Orbiter that started it all |work=NASA Spaceflight |first=Chris |last=Gebhardt |date=April 27, 2012 |access-date=June 18, 2015 |archive-date=June 19, 2015 |archive-url=https://web.archive.org/web/20150619013542/http://www.nasaspaceflight.com/2012/04/space-shuttle-enterprise-the-orbiter-that-started-it-all/ |url-status=live }}</ref>
|-
| 1977 August 12
| First free flight
|}