History
Past service disruptions and maintenance events
27 January – 3 February 1975
✨
No incidents
All systems operated normally during this period
20–27 January 1975
✨
No incidents
All systems operated normally during this period
13–20 January 1975
✨
No incidents
All systems operated normally during this period
6–13 January 1975
✨
No incidents
All systems operated normally during this period
30 December 1974 – 6 January 1975
✨
No incidents
All systems operated normally during this period