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737, How Can You Tell Old From New?  
User currently offlineLHmark From United States of America, joined Jan 2000, 7255 posts, RR: 51
Posted (13 years 4 months 1 day 18 hours ago) and read 936 times:

Can somebody please help me discern the visible external differences 'twixt the 300/400/500series and 600/700/800 series? The wing looks a little different in plan view, but I never have the opportunity to be directly above the @#%$ thing.


"Sympathy is something that shouldn't be bestowed on the Yankees. Apparently it angers them." - Bob Feller
7 replies: All unread, jump to last
 
User currently offlineAvratdwc From United States of America, joined Jan 2000, 68 posts, RR: 0
Reply 1, posted (13 years 4 months 1 day 18 hours ago) and read 882 times:

Look at the number of emergency seats over the wing as well as the engine cowling. The much newer models have an almost flat bottom. Plus the wings on the 800 are wider and longer than the other versions. I hope I could have helped

User currently offlineTEDSKI From , joined Dec 1969, posts, RR:
Reply 2, posted (13 years 4 months 1 day 18 hours ago) and read 874 times:

The way to distinguish the Classic 737 from the Next Generation are the intakes on the CFM56 engines. On the Next Generation models they are round and the wings have been extended.

User currently offlineVirgin747 From Canada, joined Oct 1999, 309 posts, RR: 0
Reply 3, posted (13 years 4 months 1 day 18 hours ago) and read 869 times:

Besides the 500 the rest should be larger than the rest, the 8,and 9 hundred are just huge!!

matthew"747"capina

User currently offlineD L X From United States of America, joined May 1999, 10561 posts, RR: 53
Reply 4, posted (13 years 4 months 1 day 16 hours ago) and read 854 times:

The 737-600, 700, 800, and 900 all have larger wings (112' 7" vs. 94') and a 5 foot taller tail. The engine nacelles on the new series are more rounded than the 300-500, but are not as round as a 757 or other jet.

User currently offlineBoeing757/767 From United States of America, joined Jun 1999, 2264 posts, RR: 2
Reply 5, posted (13 years 4 months 1 day 16 hours ago) and read 850 times:

The newer ones also have a taller tail.


Free-thinking, left-leaning secularist
User currently offlineJet Setter From , joined Dec 1969, posts, RR:
Reply 6, posted (13 years 4 months 1 day 15 hours ago) and read 846 times:

Apart from:
Larger, more slender wings
Taller tail fin
Round engine intakes and rounder nacelles
Taller landing gear legs due to longer fuselage

You notice the flap track fairings on the 737NG are larger than on the 737 Classic (actually based on the 757 - you can see the similarity) They don't come to a sharp point in the way they do on the 737 classic. Also, due to the longer wing they appear to be much closer inboard than on earlier aircraft.

Compare this 737-300 "Classic"

Click for large version
Click here for full size photo!
Photo © Dayot Jean-Charles


With these 737-700 "Next-Gens"

Click for large version
Click here for full size photo!
Photo © Michael F. Mclaughlin



Click for large version
Click here for full size photo!
Photo © Jason Whitebird


You can see the slender wings best on the Copa pic and the Flap track fairings on the Southwest pic because they're red

User currently offlineTimz From United States of America, joined Sep 1999, 6468 posts, RR: 8
Reply 7, posted (13 years 4 months 1 day 14 hours ago) and read 841 times:

If you're at the airport trying to identify an approaching 737, the landing lights on the NG are in the wing roots and under the fuselage (like Airbus). Earlier 737's have lights in the wing roots and also in the flap tracks, well out along each wing.
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