History
Past service disruptions and maintenance events
28 January – 4 February 1980
✨
No incidents
All systems operated normally during this period
21–28 January 1980
✨
No incidents
All systems operated normally during this period
14–21 January 1980
✨
No incidents
All systems operated normally during this period
7–14 January 1980
✨
No incidents
All systems operated normally during this period
31 December 1979 – 7 January 1980
✨
No incidents
All systems operated normally during this period