Of course, it was obvious wasn't it? Statistics only tell us what you want them to.
What use is an 'S' aircraft if it is in the hangar, lets say for 5 hours of a day. (3am-8am for example ). I must add that this is a BEST CASE as some units are in the hangar for more than an average 5hrs a day during a week.
In a normal month, with 100% servicability, 150 flying hours are lost in this 'best case'.
On these figures, losing 5hrs a day in the hangar, even with 100% 'servicability' the aircraft is at 79.2% availability.
A bit less than previous figures;
For the record, the EC135 stats from 15 forces show:
worst: 89%
best:98%
This includes unscheduled downtime.
which perhaps TC would like to adjust!