An excellent, bulletproof ELT if the rack is with it. Only problem is that while the 121.5 freq ELTs will be legal to use, it won't do you any good as 121.5 mhz will cease to be monitored for ELTs after (I think) the end of 2008. SAR is shifting to the 406 mhz freq units, by international agreement, but congress/FAA has not mandated you replace your unit.
Charles