History
Past service disruptions and maintenance events
23–30 December 1974
✨
No incidents
All systems operated normally during this period
16–23 December 1974
✨
No incidents
All systems operated normally during this period
9–16 December 1974
✨
No incidents
All systems operated normally during this period
2–9 December 1974
✨
No incidents
All systems operated normally during this period
25 November – 2 December 1974
✨
No incidents
All systems operated normally during this period
31 December 1973 – 7 January 1974
✨
No incidents
All systems operated normally during this period