History
Past service disruptions and maintenance events
26 April – 3 May 1971
✨
No incidents
All systems operated normally during this period
19–26 April 1971
✨
No incidents
All systems operated normally during this period
12–19 April 1971
✨
No incidents
All systems operated normally during this period
5–12 April 1971
✨
No incidents
All systems operated normally during this period
29 March – 5 April 1971
✨
No incidents
All systems operated normally during this period