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737-900 Variances  
User currently offlineFastEddie07 From United States of America, joined May 2007, 243 posts, RR: 0
Posted (6 years 1 week 2 days ago) and read 3067 times:

I noticed some of the 737-900s have the extra door near the rear of the aircraft and some do not. What is the difference if any in these aircraft?

14 replies: All unread, jump to last
 
User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 1, posted (6 years 1 week 2 days ago) and read 3058 times:

More doors = more seating capacity possible, because max seating is limited by the number and type of doors, as they govern how fast an aircraft can be evacuated.

At first Boeing didn't offer the option of more/bigger doors, and 739s were limited to the same maximum seating capacity as the 738s (189 IIRC). This wasn't much of a problem for mainline airlines, since they were going to have a 2 class configuration with less seats, but holiday/charter airlines could be scared off from buying the -900. Now that the 757 is no longer in production, having an aircraft that has the same max seating as a A321 was more important for Boeing I guess.

Different door configurations is an option on many other aircraft, including the 757-200, 767, A330 etc.


LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineFastEddie07 From United States of America, joined May 2007, 243 posts, RR: 0
Reply 2, posted (6 years 1 week 1 day 23 hours ago) and read 3046 times:

Is the lenght of the aircraft different?

User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 3, posted (6 years 1 week 1 day 23 hours ago) and read 3037 times:



Quoting FastEddie07 (Reply 2):

No, it's the same 737-900 fuselage.


LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineXT6Wagon From United States of America, joined Feb 2007, 3393 posts, RR: 4
Reply 4, posted (6 years 1 week 1 day 22 hours ago) and read 3019 times:

The 737-900ER has the extra rear door. This is to provide extra seating capacity since most of the plain 900 in service were hitting the max seats allowed due to the exit capacity. If an airline does not wish to use the doors they can deactivate them and panel over the inside.

I am uncertain if you can still order a 900 without the extra rear doors.


User currently offlineTranspac787 From United States of America, joined Jul 2007, 3203 posts, RR: 13
Reply 5, posted (6 years 1 week 1 day 20 hours ago) and read 2983 times:



Quoting XT6Wagon (Reply 4):
I am uncertain if you can still order a 900 without the extra rear doors.

The 737-900ER is now the only 900 variant offered by Boeing. Some customers (CO) have chosen to deactivate the doors, install larger windows, and panel over them on the inside.

Although the winglets are a dead giveaway, it can otherwise be difficult to tell a 739 from a 739ER by the windows alone at CO:


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User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 6, posted (6 years 1 week 1 day 16 hours ago) and read 2938 times:



Quoting FastEddie07 (Reply 2):
Is the lenght of the aircraft different?

Externally, no. However, the -900ER has a flat rear pressure bulkhead that results in a slightly longer passenger cabin.

Tom.


User currently offlineFastEddie07 From United States of America, joined May 2007, 243 posts, RR: 0
Reply 7, posted (6 years 1 week 1 day 14 hours ago) and read 2922 times:

So all the new ones are coming with winglets now?

User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9584 posts, RR: 52
Reply 8, posted (6 years 1 week 1 day 14 hours ago) and read 2920 times:



Quoting FastEddie07 (Reply 7):
So all the new ones are coming with winglets now?

Yes the 739ER has winglets as a standard feature. CO must take them with winglets preinstalled. Interestingly enough, they take their new 738s without winglets and have them installed later on because they got a good aftermarket deal to get them installed which apparently is less expensive than getting them originally installed by Boeing.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 9, posted (6 years 1 week 1 day 10 hours ago) and read 2893 times:



Quoting Tdscanuck (Reply 6):
Externally, no. However, the -900ER has a flat rear pressure bulkhead that results in a slightly longer passenger cabin.

Is there a pic of this Flat rear pressure bulkhead available.
regds
MEL



Think of the brighter side!
User currently offlineCRJ900 From Norway, joined Jun 2004, 2174 posts, RR: 1
Reply 10, posted (6 years 1 week 1 day 10 hours ago) and read 2882 times:
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Quoting Tdscanuck (Reply 6):
However, the -900ER has a flat rear pressure bulkhead that results in a slightly longer passenger cabin.

Isn't it just the rear-wall galley that is 20 inches deeper, so that a half-size cart can be stowed in front of a full-size cart?



Come, fly the prevailing winds with me
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 11, posted (6 years 1 week 19 hours ago) and read 2764 times:



Quoting HAWK21M (Reply 9):

Is there a pic of this Flat rear pressure bulkhead available.

There's a picture of a flat bulkhead in Reply 6 here:
http://www.airliners.net/aviation-fo...eneral_aviation/read.main/2922740/

But that's on a 727, not a 737NG. There's a schematic on slide 3 here:
http://www.boeing.com/commercial/737...edia_kit/pdf/900XMediaOverview.pdf

Quoting CRJ900 (Reply 10):
Isn't it just the rear-wall galley that is 20 inches deeper, so that a half-size cart can be stowed in front of a full-size cart?

Basically, yes. It makes the "corners" of the cabin bigger, so you can stuff more galley back there. If you don't fit the galley, you can squeak in another row of seats.

It's a little unclear if the maximum length of the cabin actually changed, but it's considerably longer along the side walls with the flat bulkhead.

Tom.


User currently offlineValkyrie01 From United States of America, joined Mar 2007, 72 posts, RR: 0
Reply 12, posted (5 years 12 months 2 days 5 hours ago) and read 2473 times:



Quoting Transpac787 (Reply 5):
Although the winglets are a dead giveaway, it can otherwise be difficult to tell a 739 from a 739ER by the windows alone at CO:

Well in the flightdeck there are a few changes. 900ER there is a ELT test switch , the center tank fuel pumps turns off automatic etc etc.The A/C number tells you what kind of A/C it is.



The best there is the best there was the best there ever will be
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 13, posted (5 years 12 months 1 day 22 hours ago) and read 2422 times:



Quoting Tdscanuck (Reply 11):
There's a picture of a flat bulkhead in Reply 6 here:
http://www.airliners.net/aviation-fo...2740/

Thats for the B727 & B747.I was looking for the B739ER.
regds
MEL



Think of the brighter side!
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 14, posted (5 years 12 months 1 day 15 hours ago) and read 2365 times:



Quoting HAWK21M (Reply 13):

Thats for the B727 & B747.

I know. That's why I said:

Quoting Tdscanuck (Reply 11):
But that's on a 727, not a 737NG.

I haven't been able to find a picture of the 737NG one yet.

Tom.


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