Editing Space Shuttle Challenger (section)

====Construction milestones (as OV-099)====
{| class="wikitable"
|-
! style="background:#efefef;" | Date
! style="background:#efefef;" | Milestone<ref name="NASA/KSC"/>
|-
| January 5, 1979
| Contract Award to [[Rockwell International]], Space Transportation Systems Division
|-
| January 28, 1979
| Start structural assembly of crew module
|-
| November 3, 1980
| Start of Final Assembly
|-
| October 23, 1981
| Completed Final Assembly
|-
| June 30, 1982
| Rollout from Palmdale
|-
| July 1, 1982
| Overland transport from Palmdale to Edwards
|-
| July 5, 1982
| Delivery to KSC
|-
| December 18, 1982
| Flight Readiness Firing (FRF)
|-
|January 25, 1983
|Second FRF (performed due to a hydrogen leak having occurring during the first FRF)<ref>{{cite web |date=April 6, 2013 |title=30 Years Since STS-6: The Rise of the Challenger (Part 1) |url=http://www.americaspace.com/?p=33504}}</ref>
|-
| April 4, 1983
| First Flight ([[STS-6]])
|}