Silverdart I was in a similar situation a few years back with what sounds to be the same condition as yourself. After the mandatory 6 months off after the Bypass I visited a very good Cardiologist in Brisbane and underwent a Thallium ECG as required by CASA with good results, these results along with the normal DAME report were submitted to CASA and a Class One was issued. I have renewed my Class One every 12 months with a Stress ECG and routine medical, this was also acceptable to the UK CAA as I was working in Europe, now working in the UAE with the same requirements, although outside of Oz I am restricted by OML. Enjoy your 6 months off and you'll get your Class One back with no problem I'm sure.