Boeing’s latest narrow-body jet is now flying with a handful of airlines, from Norwegian to FlyDubai, but the 737 MAX made its public debut just two years ago, at the 2016 Farnborough Air Show.Since then, the mid-range MAX 8 has carried countless passengers around the world, as Boeing has continued to roll out other variants — from the longer 737 MAX 9, which debuted at the Paris Air Show and is now flying with United Airlines within the US, to the smaller MAX 7, which popped up for the first time at Farnborough just last week.Given that you’re by now probably well acquainted with the larger MAX variants — the MAX 8 and MAX 9 — I’m going to keep things short with the “little guy” today:While it offers nearly 400 miles more range, the MAX 7 is considerably smaller than the workhorse MAX 8, which can accommodate nearly 40 more passengers in a high-density configuration. In fact, the smallest MAX fits roughly the same number of passengers as the new Airbus A220-300 — a far more popular aircraft.737 MAX 7737 MAX 8737 MAX 9737 MAX 10Max Seats172210220230Length116 ft., 8 in.129 ft., 8 in.138 ft., 4 in.143 ft., 8 in.Range (miles)4,4304,0804,0803,800There’s no question that the MAX 7 is a beaut, but sadly the plane’s good looks haven’t helped boost its popularity. Southwest is currently the 7’s largest customer, with orders for 30 planes, but there’s always a chance the airline could choose to add more MAX 8s to the fleet, instead.Hopefully, if airlines do eventually take delivery of the smallest MAX, they also decide to abandon those awful lavatories flying with the larger planes today.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Sadly the small lav and sink is present on Boeing’s test plane, as I saw at the Farnborough Air Show. But for better or worse, it appears that pilots and engineers don’t have to deal with those horrendous sinks — the rear lav sink was inoperable during my tour, having been replaced with a bottle of hand sanitizer, instead.For more from the Farnborough Air Show, see:Inside Hi Fly’s A380, the World’s First Used SuperjumboWay Above First: Living Large on Qatar’s Gulfstream G500Inside Boeing’s Latest Dreamliner, Biman Bangladesh’s First 787-8