History
Past service disruptions and maintenance events
25 May – 1 June 1981
✨
No incidents
All systems operated normally during this period
18–25 May 1981
✨
No incidents
All systems operated normally during this period
11–18 May 1981
✨
No incidents
All systems operated normally during this period
4–11 May 1981
✨
No incidents
All systems operated normally during this period
27 April – 4 May 1981
✨
No incidents
All systems operated normally during this period