Rick, Your aircraft and those with the wide chord blades are as immune from LTE as any. I wouldnt assume it absolutely impossible.
It is certainly possible to get in a mess with the narrow chord tail rotor of the 28A and 280 if the RPM is low. If anyone is interested I can bore you with the details.
At Normal RPM the narrow chord blades are more than adequate.
Aircraft built 1975 on, have the wider chord blades which solved the problem at low RPM. Enstrom must have realised there was a problem and solved it.
