http://www.shephard.co.uk/Rotorhub/D...8-a889fd9c4ab4

CFB WINNIPEG: As a precautionary measure, the Air Force has limited
its fleet of 15 CH-149 Cormorant helicopters to search and rescue
(SAR) operations and test flights only until more details are known
about cracks that were found on the tail rotor half hubs of Cormorant
CH-149908. The decision was made Saturday night

The cracks on the tail rotor half hub were larger than previously seen
in Canada. While the depth of the cracks are not known at this time,
the largest, which is hairline in nature, can be seen spanning out
along a portion of the half hub.