KC135TopBoom From United States of America, joined Jan 2005, 12019 posts, RR: 52
Reply 4, posted (7 years 6 months 2 weeks 5 days 22 hours ago) and read 2886 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.