HALIFAX—Cracks have been detected in the tails of all but two of the Canadian military’s 23 Cyclone helicopters, the Royal Canadian Air Force confirmed Thursday, adding two more aircraft to the previous list. The cracks were first detected in one of the maritime helicopters during a routine inspection on Nov. 26 at 443 Maritime Helicopter Squadron at Patricia Bay, B.C. By Dec. 5, the Air Force said it had discovered damage in the same general area on a total of 19 helicopters. At the time, the military said two Cyclones did not appear to have any tail defects and that the remaining two in the fleet were receiving longer-term maintenance and would be inspected at a later date. On Thursday, a military spokeswoman said cracks were detected in two more aircraft, including one of the two Cyclones that had been initially cleared. “In one case, the cracks were so small, …