KC135TopBoom From United States of America, joined Jan 2005, 12128 posts, RR: 51
Reply 4, posted (7 years 11 months 1 week 13 hours ago) and read 3040 times:
With a 3000nm range, the B-737-600 could be ETOPS certified. But, I don't think any airline has done that with this model. There have not been very many B-737-600s sold. IIRC, around 30-35 airplanes, maybe even less than that.