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Joined: Wed Nov 09, 2005 12:36 am

Old 737vs New 737

Fri Jan 15, 1999 5:59 am

May anybody tell me if there is a "visible" difference betwenn old generations 737s and new generations 737s (600-700-800)

RE: Old 737vs New 737

Fri Jan 15, 1999 6:04 am

The new ones have longer wings, a longer vertical tail, and engine nacelles that aren't as flat on the bottom as the second generation 737s.
Posts: 3612
Joined: Mon May 31, 1999 4:44 am

RE: Old 737vs New 737

Fri Jan 15, 1999 6:59 am

Well, I find it difficult to recognize at 1km if it is a 733 or a 73G, or if it is a 734 or a 738 because the differences are very light.
Anyway, in the new generation, the tail is higher and the wings are not so close to the ground.

Mirage, Faro, Portugal
Posts: 602
Joined: Thu Apr 24, 2003 10:00 am

RE: Old 737vs New 737

Fri Jan 15, 1999 8:01 am

There are three generations of 737's.
1. 100 and 200 series (late 60's and 70's)
2. 300 thru 500 series (80's)
3. 600 thru 900 series (90's)
All nine versions have the exact same cockpit windows and fuselage width, exactly like the 707 and 727.

The oldest 737's, 100 and 200 are easily recognizable because of the engines and the tail: the engines are skinny Pratt & Whitney and extend in front and behind the wing, the tail doesn't have an angled tail fin like the tail on younger 737's.
Now, between the other two generations of 737's, it's hard to tell. It's more difficult to make the distinction because they all have CFM engines and an angled tail fin. I have to look closely and concentrate to tell which 737 it is, whether it's a NG737 or not. I know that the NG737's have a higher tail, larger wings and less flat engines. Of course I can tell quickly if it's a between a 300 or a 700, between a 500 or a 600, between a 400 or a 800 because of the length (the 400 and 800 have two overwing exits on each side). Southwest painted the flap canoes in red on their 737-700's to make it easier for ground crews to tell which 737 it is.
The first time I saw a Next Generation 737 in real was three months ago in Newark, it was a 800 of Continental. I could tell because the tail was high and there were two overwing exits on each side, I knew it was not a 900 because that one doesn't exist yet.
When I look into the cockpit of a 737, I can tell which generation of 737 it is.

Ben Soriano
Brussels Belgium

PS: Who knows, maybe there'll be a 737-1000!
Posts: 955
Joined: Tue May 18, 1999 2:59 am

RE: Old 737vs New 737

Fri Jan 15, 1999 8:10 am

If you are looking at a Southwest plane, check the flap bulbs on the underside trailing edge of the wings. On the 737-700s, they are painted red. On the older 737s they are not.

RE: Old 737vs New 737

Fri Jan 15, 1999 9:07 am

Well, because it has not yet been said, the newer 737's have sharper noses.
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Joined: Wed Jul 07, 1999 11:27 am

RE: Old 737vs New 737

Fri Jan 15, 1999 9:15 am

Sharper noses?? I didn't notice that when I was at the rollout for N737X at Renton in December of 96. Key feature is the round engine cowlings. You might also get a feel for the higher height of the landing gear by looking at the ramp agents.

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