N6376m From , joined Dec 1969, posts, RR: Posted (10 years 6 months 1 week 6 days 18 hours ago) and read 2419 times:
I've been using the new airline recognition quiz which is very cool but I'm having a hell of time distinguishing between a 737-300 and -400. Can anyone tell me what the key differences are in terms of outward appearances?
Airways6max From United States of America, joined Aug 2003, 494 posts, RR: 0
Reply 10, posted (10 years 6 months 1 week 6 days 17 hours ago) and read 2077 times:
A 737-300 has one window exit over the wings. A 737-400 has two. Also a 737-300 has only one gap in its row of windows, just forward the exit. A 737-400 has two. Also, the 737-400 is slightly longer than a -300.
AR385 From Mexico, joined Nov 2003, 6129 posts, RR: 30
Reply 14, posted (10 years 6 months 1 week 6 days 12 hours ago) and read 1861 times:
To distinguish the 300 between the 500, you just need to look closely and you'll see the 500 hundred looks stubby, more like a squeezed 300. Think the 747 vs. the 747SP
To distinguish the 737 classics from the NG's, what I do is look at the engine pylon. The engine pylon on the classics is straight and thick, while in the NG, the pylon is thinner, curved and more "delicate" This is my method, I came up with it after hours of comparing pictures. Some others may disagree with this but it works for me.