9A-CRO
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737 Versions - External Differences

Sat Dec 02, 2000 12:29 am

can anybody tell me how to differ 737 -300,-400, & -500
from their newer brothers (of the ame lenght)
(of course I mean external "spotters" difference, not technological differences)
When once you have tasted flight, you will forever walk the earth with your eyes turned skyward...
 
gkirk
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RE: 737 Versions - External Differences

Sat Dec 02, 2000 12:35 am

Good Question, are the wings not bigger on the 737NG?
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9A-CRO
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RE: 737 Versions - External Differences

Sat Dec 02, 2000 12:46 am

yes i think the wings (and tailfin) are bigger but it is hard to see which version it is if you can't compare
the size to anything (ie. if the plane is flying and backrround is sky)

from right angle it could be differed be rounder engines on newer version, but what about the side view?
When once you have tasted flight, you will forever walk the earth with your eyes turned skyward...
 
OPNLguy
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RE: 737 Versions - External Differences

Sat Dec 02, 2000 1:23 am

The NG aircraft are slightly higher off the ground, so the engine cowlings are rounder looking, especially as seen from the front, and not the flat-bottomed versions you see on the -300/-400/-500 to maximize ground clearances.

The NG aircraft have longer wingspans, and the vertical stablizers are also a little longer.

The NG also have differences in landing lights than the older -100 through -500 versions. All 737s have a landing light on each side where the wing meets the fuselage. There's another landing light on each side of the aircraft too. On the older 737 versions, this "outboard" landing light is built into one of the trailing edge flap fairings, and the lights are just a few feet inboard of the wingtip. On the NG versions, there is on "outboard" landing light there, but you'll see them having been relocated to the underside of the fuselage, just either side of the centerline. Thus, all 4 appear much closer together.

Southwest also has the flap fairings on their -700s painted red, compared with the standard gray on other 737 versions.
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Nightfly
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RE: 737 Versions - External Differences

Sat Dec 02, 2000 1:34 am

I asked the same question to myself a few years ago. Then I found out following differences.

The Boeing 737-400 is the only one with two doors in the middle of the plane. -300 and -500 only have one door.

Boeing 737-500 has got 9 windows next the front door until there´s a break. 737-300 has got more there. If you look often after this, you get a "feeling" if it´s a -300 or a -500. I do this, and it works.

Hope this helps,
nightfly

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