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737MAX Door  
User currently offlineinfiniti329 From United States of America, joined Jul 2012, 652 posts, RR: 0
Posted (1 year 1 month 2 weeks 2 days 10 hours ago) and read 4036 times:

One of the biggest requests I hear for 737MAX is adding power assisted doors similar to what the A320 has. Can the design feature be easily incorporated into the existing design or will it require more tweaking of the fuselage shell?

12 replies: All unread, jump to last
 
User currently offlinechuchoteur From France, joined Sep 2006, 763 posts, RR: 0
Reply 1, posted (1 year 1 month 2 weeks 1 day 20 hours ago) and read 3842 times:

... I presume you mean sliding vs pivoting doors?

User currently offlineStitch From United States of America, joined Jul 2005, 30908 posts, RR: 87
Reply 2, posted (1 year 1 month 2 weeks 1 day 19 hours ago) and read 3817 times:
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Quoting chuchoteur (Reply 1):
... I presume you mean sliding vs pivoting doors?

The A320 does have pivoting doors.

Per 320tech in Airbus Door Question (by Flyboy80 Sep 3 2004 in Tech Ops), the A320 passenger doors contain a torsion bar which provides a counterbalancing force to help lift the door, requiring less than 35 pounds of force be applied to lift it up and out.

I believe that 737 doors do not have any type of assist and require significantly more effort on the part of the person opening them.


User currently offlineAA737-823 From United States of America, joined Mar 2000, 5771 posts, RR: 11
Reply 3, posted (1 year 1 month 2 weeks 1 day 11 hours ago) and read 3672 times:

Quoting Stitch (Reply 2):
I believe that 737 doors do not have any type of assist and require significantly more effort on the part of the person opening them.

Hey, Stitch.
The 737 does, indeed, have assist built in to the L1 door.
It's obviously still a bit difficult to operate, but the assist is there.
And it's completely mechanical- no power source required.

Quoting Stitch (Reply 2):
The A320 does have pivoting doors.

I guess it's a matter of clarification, but to suggest that the A320 and 737 have the same type of door is clearly flawed.
The A320 does not require that the door be spun ("pivoted") 180 degrees, as the 737 does.


User currently offline1337Delta764 From United States of America, joined Oct 2005, 6490 posts, RR: 2
Reply 4, posted (1 year 1 month 2 weeks 1 day 11 hours ago) and read 3663 times:

I personally think a better term for the 737 door would be "swing out", while the Airbus/777/787 doors are "slide out".


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User currently offlineArmitageShanks From UK - England, joined Dec 2003, 3621 posts, RR: 15
Reply 5, posted (1 year 1 month 2 weeks 1 day 10 hours ago) and read 3633 times:

Quoting AA737-823 (Reply 3):
And it's completely mechanical- no power source required.

How does it work? Springs? Some other sort of tension system?


User currently offline1337Delta764 From United States of America, joined Oct 2005, 6490 posts, RR: 2
Reply 6, posted (1 year 1 month 2 weeks 1 day 10 hours ago) and read 3629 times:

As far as I know, the only Boeing aircraft to ever have power-assisted doors was the 767 with its slide-up doors, and typically it was only on the 1L and 2L doors (the latter only on 764ERs and 763(ER)s equipped with doors forward of the wings).


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User currently offlineSXDFC From United States of America, joined Dec 2007, 2318 posts, RR: 21
Reply 7, posted (1 year 1 month 2 weeks 1 day 3 hours ago) and read 3527 times:

Is it true that if the 737's door were to be re-introduced in 2013 that the FAA would not pass the design?


ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
User currently offlineAA737-823 From United States of America, joined Mar 2000, 5771 posts, RR: 11
Reply 8, posted (1 year 1 month 2 weeks 1 day 2 hours ago) and read 3505 times:

Quoting ArmitageShanks (Reply 5):
How does it work? Springs? Some other sort of tension system?

Indeed, a spring wrapped around the tower shaft inside the frame of the aircraft, rather than inside the door.
Incidentally, your username cracks me up every time I see it.

Quoting SXDFC (Reply 7):
Is it true that if the 737's door were to be re-introduced in 2013 that the FAA would not pass the design?

That's my strong understanding.
The funny thing is that people think the L1 door is difficult; it's nothing compared to the R1!!


User currently offlineSXDFC From United States of America, joined Dec 2007, 2318 posts, RR: 21
Reply 9, posted (1 year 1 month 2 weeks 11 hours ago) and read 3272 times:

Quoting AA737-823 (Reply 8):
The funny thing is that people think the L1 door is difficult; it's nothing compared to the R1!!

I have operated all service doors on the B737, and I most defiantly agree..



ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
User currently offlineflyboy80 From United States of America, joined Jul 2001, 1878 posts, RR: 3
Reply 10, posted (1 year 1 month 1 week 3 days 8 hours ago) and read 2700 times:

I would say that the 2R door is more difficult to close then anyone of them.

How did the 727 door compare, Its exactly the same, even though older, as the 1L 737 door correct? I believe the doors my airline uses in the training department, in Atlanta  , are 727 doors, as they look nothing like the 737-300 or 737-800 doors, possibly could be 737-200 doors.


User currently offlinewncrew From United States of America, joined Jun 2006, 1457 posts, RR: 10
Reply 11, posted (1 year 1 month 1 week 3 days 4 hours ago) and read 2625 times:

Quoting flyboy80 (Reply 10):

I would say that the 2R door is more difficult to close then anyone of them.

R2 and L2 are the easiest by far... they are perfectly balanced and centered. In fact, they're directly across form one another. They require NO force really. The R1 on the other hand is further forward than the L1 and you not only push it out but also UP a bit. R1 is definitely the hardest to close (this coming from a line-flying FA and a trainer)



ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 12, posted (1 year 1 month 1 week 1 day 22 hours ago) and read 2402 times:

Quoting 1337Delta764 (Reply 6):
As far as I know, the only Boeing aircraft to ever have power-assisted doors was the 767 with its slide-up doors

The B757 Doors had a power assist pneumatic operated doors too as an option.The charged nitrogen cylinder operated a chain link that operated the hinge of the door.



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