| Total number of failures and maintenance schedules | |||||
| Year/month | Year | Month | Priority failure | Non-priority failure | Maintenance |
| 01.2010 | 2010 | 1 | 0 | 2 | 3 |
| 02.2010 | 2010 | 2 | 0 | 1 | 4 |
| 03.2010 | 2010 | 3 | 3 | 0 | 6 |
| 04.2010 | 2010 | 4 | 0 | 3 | 2 |
| 05.2010 | 2010 | 5 | 5 | 0 | 3 |
| 06.2010 | 2010 | 6 | 1 | 8 | 2 |
| 07.2010 | 2010 | 7 | 0 | 1 | 0 |
| 08.2010 | 2010 | 8 | 0 | 2 | 1 |
| 09.2010 | 2010 | 9 | 2 | 1 | 1 |
| 10.2010 | 2010 | 10 | 1 | 3 | 5 |
| 11.2010 | 2010 | 11 | 1 | 8 | 2 |
| 12.2010 | 2010 | 12 | 1 | 6 | 2 |
| 01.2011 | 2011 | 1 | 5 | 0 | 5 |
| 02.2011 | 2011 | 2 | 1 | 16 | 5 |
| 03.2011 | 2011 | 3 | 4 | 0 | 2 |
| 04.2011 | 2011 | 4 | 0 | 7 | 5 |