heedm,
You are right, I should have figured it at 9.09/100,000 hours.
A big point - All 5 EH-101 accidents are related to failure of some part of the aircraft, not pilot or engineer error. Since three quarters of the typical military accidents are human error, we could guess that the rate where the typical helicopter breaks for a typical military helicopter is probably less than .25 per 100,000 hours.
This makes the aircraft-caused rate of the EH-101 about 36 times worse than the typical fleet helicopter. 9.09 EH-101 accidents /.25 typical = 36 times worse.
For the record, most heli programs might lose one or two aircraft due to aircraft causes during the first 150,000 hours of use (at least the several I have looked at). The loss of 5 EH-101's is eye-watering.
You can slice it anyway you'd like, no helicopter in recent memory has the awful record of the EH-101.