First of all, I don't have those statistics. I'm not sure where those statistics came from.
What we know is that there have been a number of accidents in which the emergency locator did not transmit a signal, not because the ELT failed but because the antenna to which it was attached broke during the accident sequence and, therefore, wasn't able to get a signal out.
No, we're not okay with that. That is why, following the accident involving the Ornge air medical helicopter out of Moosonee, the TSB made seven recommendations, of which, if I recall, four were made to Transport Canada and three to other regulators, to improve the crashworthiness of ELTs, including not just the ELT itself but the antenna system.
Right now, with an ELT there's a gap of 50 seconds before the first signal is sent out and captured by search and rescue. This means that if the antenna is broken during that period, the signal isn't captured. We recommended that this be reviewed and reduced. We've made a number of recommendations to improve the crashworthiness of ELTs, but they are still ongoing.