Originally Posted by
tdracer
DR, no way to tell from that photo. The split simitar style winglets ended up on large numbers of 737NGs before the MAX was certified (it's easy to identify the difference between an NG and a MAX from the engine nacelle, but not the winglets.. I see lots of NGs with that style winglets at SeaTac airport (mainly Alaska Air, but some Southwest as well)
Respectfully, the 737NG Split Scimitar winglet is totally different from the 737 MAX Advanced Technology winglet, other than they are both forked up-sie/down-sie. They are very easy to differentiate visually. Visually, The Split Scimitar looks like someone took the pre-existing upswept NG winglet and superglued a goofy downwards extension onto it, but the AT winglet is an all-new aerodynamic design. The SS winglets are an Aviation Partners design, the AT winglet was designed internally to Boeing.
https://www.aviationpartners.com/air...nded-winglets/
https://boeing.mediaroom.com/2012-05...et-for-737-MAX