CDreier
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Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 8:40 am

I'm sure the differences must be subtle, but could someone tell me in a nutshell what makes the Boeing 767-400 different from the 300 series? Thanks.
 
EMBQA
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 9:00 am

Ahh, length.............!! The -400 also has a re-designed wing that is more aerodynamic.

[Edited 2006-07-20 02:01:05]
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
DeltaGuy
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 9:14 am

The -400's cockpit differs from the -300 in that the main instrument panel is of 777 design, but retains the same pedistal, autopilot, and overhead. All in all the cockpit is very nice...to the casual observer it looks like a 777.

DeltaGuy
"The cockpit, what is it?" "It's the little room in the front of the plane where the pilot sits, but that's not importan
 
vikkyvik
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 11:52 am

The -400 also has raked wingtips, which is an easy way to identify it:

-300:


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Photo © Yevgeny Pashnin
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Photo © Luc Verkuringen



-400:


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Photo © Ryan Gaddis - Spot This!
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Photo © Guy Daems - Brussels Aviation Photography



~Vik
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
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DL_Mech
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 1:02 pm

-B8F engines
777 Wheels/Brakes
777 Packs
Improved Pneumatic System
This plane is built to withstand anything... except a bad pilot.
 
pjflysfast
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 1:17 pm

Very cool facts guys!
 
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litz
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 20, 2006 11:27 pm

764 also has the "nonglitch" electrical cutover when switching off ground power or APU to engine power. 763's and older you'll see the lights flicker, PA cut off, etc. 764 does this seemlessly.

Most 763's also don't have a door 2L/2R just before the wing (although it was an orderable option), all 764's do.

- litz
 
CDreier
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RE: Differences Between B767-300 Vs. -400?

Fri Jul 21, 2006 7:27 am

Great info. Thanks guys!
 
gigneil
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RE: Differences Between B767-300 Vs. -400?

Fri Jul 21, 2006 1:48 pm

Quoting EMBQA (Reply 1):
The -400 also has a re-designed wing that is more aerodynamic.

Well. It has the wingtips. Otherwise the shape of the wing is the same.

N
 
HorizonGirl
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RE: Differences Between B767-300 Vs. -400?

Sat Jul 22, 2006 12:34 pm

Quoting Litz (Reply 6):
763's and older you'll see the lights flicker,

All the 763s I've been on, the lights just go out rather than flicker.
Is this normal for older 767s, or was this something particular to AC?


Devon
Flying high on the Wings of the Great Northwest!
 
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litz
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RE: Differences Between B767-300 Vs. -400?

Sat Jul 22, 2006 12:51 pm

Quoting HorizonGirl (Reply 9):
All the 763s I've been on, the lights just go out rather than flicker.
Is this normal for older 767s, or was this something particular to AC?

Normal for pretty much anything "older" ... the 764, 777 (and some of the newer 737-700-800-900) have a "seemless" power crossover.

Older planes have the airplane equivalent of a knife switch ... you plug in ground power, and switch it over. Depending on how fast they switch it (and whether or not the ground power trips off) you'll get a flicker or an outright power outage. Often, if the outage lasts long enough, you'll get to see an unintended test of the emergency lighting system ....  biggrin 

The newer planes do it electronically, so there's no blackout when the power switches.

Now mind you, I was on a 764 once that lost ground power AFTER switchover ... that's one dark, dark, dark airplane at night ...  Smile

- litz
 
HorizonGirl
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RE: Differences Between B767-300 Vs. -400?

Sat Jul 22, 2006 2:23 pm

Quoting Litz (Reply 10):

Makes sense!
Thank you very much.


Devon
Flying high on the Wings of the Great Northwest!
 
ha763
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RE: Differences Between B767-300 Vs. -400?

Sat Jul 22, 2006 6:57 pm

Don't forget about the windows. The -400 has the same windows as the 777. You can see the difference by looking at the CO and AA pictures in post number 3.
 
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HA_DC9
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RE: Differences Between B767-300 Vs. -400?

Sun Jul 23, 2006 11:01 am

The -400 is also a little bit taller to compensate for the longer fuselage.
 
dl757md
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RE: Differences Between B767-300 Vs. -400?

Sun Jul 23, 2006 11:43 pm

Quoting HA_DC9 (Reply 13):
The -400 is also a little bit taller to compensate for the longer fuselage.

Which is achieved by using the main gear struts from the 777. It's probably the easiest way to ID a 764 from a distance. If it looks like the rear end is jacked then it's a 764.

DL757Md
757 Most beautiful airliner in the sky!
 
N231YE
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RE: Differences Between B767-300 Vs. -400?

Tue Jul 25, 2006 11:01 am

Also not mentioned...777 Style Interior, containing improved ergonomics, and a more "open" atmosphere.
 
ha763
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RE: Differences Between B767-300 Vs. -400?

Tue Jul 25, 2006 3:23 pm

Quoting N231YE (Reply 15):
Also not mentioned...777 Style Interior, containing improved ergonomics, and a more "open" atmosphere.

This is available on all 767s, not just the -400. Basically, all 767s ordered after 2000 have the Boeing Signature Interior.
 
N231YE
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RE: Differences Between B767-300 Vs. -400?

Wed Jul 26, 2006 6:30 am

Quoting Ha763 (Reply 16):
This is available on all 767s, not just the -400. Basically, all 767s ordered after 2000 have the Boeing Signature Interior.

Thanks for the correction, though I do believe the -400 was the first to market the signature interior for the 767 line.
 
gt1
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RE: Differences Between B767-300 Vs. -400?

Thu Jul 27, 2006 1:06 pm

Higher Gross Weight = Good, about 43,000lbs heavier

New Gear/777 wheels and brakes = Good

New wing tip = Good

Pneumatics = ok - Same valves, but better control and fault isolation

New Cockpit = Bad/ok - Not 777. Not 737NG. Not old 767. Huh? Boeing, can you say commonality? However, it does provide more functionality than the old 767. But the best part for Delta was it looked like a 777 but was a lot cheaper.

Same basic engine = Terrible - History repeats itself with Delta ordering the wrong engine for a new 767 variant twice. First time was the original 763 (non ER) with the CF6-80A. Everyone else took the -80C2. For the -400, DAL specified the -80C2 and they should have taken the -80E1.
 
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litz
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RE: Differences Between B767-300 Vs. -400?

Fri Jul 28, 2006 1:39 am

Quoting Gt1 (Reply 18):
Same basic engine = Terrible - History repeats itself with Delta ordering the wrong engine for a new 767 variant twice. First time was the original 763 (non ER) with the CF6-80A. Everyone else took the -80C2. For the -400, DAL specified the -80C2 and they should have taken the -80E1.

How hard is it to convert a -C2 to a -E1, or replace the powerplant entirely?

- litz
 
gigneil
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RE: Differences Between B767-300 Vs. -400?

Fri Jul 28, 2006 6:05 am

Quoting Gt1 (Reply 18):
For the -400, DAL specified the -80C2 and they should have taken the -80E1.

The 80E1 is not and never was an option for the 767-400.

It wouldn't even fit.

Quoting Litz (Reply 19):
How hard is it to convert a -C2 to a -E1, or replace the powerplant entirely?

It can't be done. They're very, very different engines.

N
 
gt1
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RE: Differences Between B767-300 Vs. -400?

Fri Jul 28, 2006 9:02 am

Quoting Gigneil (Reply 20):
The 80E1 is not and never was an option for the 767-400.

It wouldn't even fit

I suggest the -80E1 was considered during the design phase. But for the second time, Delta wanted engine commonality. You'll notice that DAL has 4 different engines in their -300 fleet. As for the -400, with a increase in gross weight, length and span, it should have been required.

As for the fit, Boeing proposed a 767-400ERX, with more powerful engines (-80E1 maybe?), a tail trim tank to get back to the range of a -300ER, and 15,000 lbs more gross weight. Of course it never got off the drawing board

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