History
Past service disruptions and maintenance events
27 October – 3 November 1975
✨
No incidents
All systems operated normally during this period
20–27 October 1975
✨
No incidents
All systems operated normally during this period
13–20 October 1975
✨
No incidents
All systems operated normally during this period
6–13 October 1975
✨
No incidents
All systems operated normally during this period
29 September – 6 October 1975
✨
No incidents
All systems operated normally during this period