History
Past service disruptions and maintenance events
22–29 December 1980
✨
No incidents
All systems operated normally during this period
15–22 December 1980
✨
No incidents
All systems operated normally during this period
8–15 December 1980
✨
No incidents
All systems operated normally during this period
1–8 December 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