zippyjet From United States of America, joined Sep 2001, 4720 posts, RR: 13 Posted (3 years 2 months 1 day 3 hours ago) and read 16496 times:
This may be trivial but isn't ironic that on the 757's, the emergency exit doors are more contemporary looking in design then even on the 737-NG's. The 737 exit doors still are designed like the ones on the 727, 707 and 720 series. This design features the window shade rising from the bottom of the window . And, the handle is shaped like a big peanut. Whereas on the 757's the design looks more contemporary. The shade is normal like the general seating and the handle is a streamlined square design. How come the 737's kept the old design? ツ
UA777222 From United States of America, joined Dec 2003, 3348 posts, RR: 13 Reply 1, posted (3 years 2 months 1 day 2 hours ago) and read 16421 times:
I believe it had to do with certification on the 737 exits. The shade pulls up because the door itself doesn't come off (correct me if I'm wrong) but actually swings out and up and stays attached to the aircraft. I believe it was a foreign certification issue that occurred because of some issue they had with a non-NG door.
If I also recall correctly, the modification to the design was last minute and they did whatever it took to be certified but the frame and the body surrounding the exit had to be redesigned to support the now added weight of the door remaining attached to the aircraft.
I think the last thing Boeing designers took into account were its aesthetics.
RoseFlyer From United States of America, joined Feb 2004, 8739 posts, RR: 52 Reply 2, posted (3 years 2 months 1 day 1 hour ago) and read 16347 times:
Quoting zippyjet (Thread starter): The 737 exit doors still are designed like the ones on the 727, 707 and 720 series.
The 737NG has the most modern overwing exit door. It will rotate up and out and not detach from the aircraft. Although a bit heavier, the design allows for faster egress and is safer than the 757, 737 Classic or Airbus overwing doors.
If you have never designed an airplane part before, let the real designers do the work!
warreng24 From United States of America, joined Nov 2005, 682 posts, RR: 0 Reply 3, posted (3 years 2 months 1 day 1 hour ago) and read 16311 times:
Quoting RoseFlyer (Reply 2): The 737NG has the most modern overwing exit door. It will rotate up and out and not detach from the aircraft. Although a bit heavier, the design allows for faster egress and is safer than the 757, 737 Classic or Airbus overwing doors.
Correct. The 737NG doors do not detach from the aircraft. They simply push out and swing up (and out of the way) to allow egress from the aircraft.
The 737 Classic, 757, 727, 707, and 767 over-wing exit doors are "plug-type" (detach from the aircraft) and must be physically pulled out (towards the interior of the aircraft) and set aside to allow egress.
UA777222 From United States of America, joined Dec 2003, 3348 posts, RR: 13 Reply 4, posted (3 years 2 months 1 day 1 hour ago) and read 16282 times:
Quoting RoseFlyer (Reply 2): The 737NG has the most modern overwing exit door. It will rotate up and out and not detach from the aircraft. Although a bit heavier, the design allows for faster egress and is safer than the 757, 737 Classic or Airbus overwing doors.
Echo....
Skip ahead to 0:38 to see the door in action. It's easy enough that even Larry David could figure it out.
BTW, the door looks like a cake to open, but the process bywhich some airlines train to utilize these doors almost makes it pointless IMHO.
m11stephen From United States of America, joined Aug 2008, 1205 posts, RR: 1 Reply 5, posted (3 years 2 months 16 hours ago) and read 15781 times:
Quoting UA777222 (Reply 4): BTW, the door looks like a cake to open, but the process bywhich some airlines train to utilize these doors almost makes it pointless IMHO.
Even in a perfect ditching, I could never imagine that procedure being carried out!
My opinions, statements, etc. are my own and do not have any association with those of any employer.
Viscount724 From Switzerland, joined Oct 2006, 21464 posts, RR: 24 Reply 6, posted (3 years 2 months 10 hours ago) and read 15474 times:
Quoting warreng24 (Reply 3): Correct. The 737NG doors do not detach from the aircraft. They simply push out and swing up (and out of the way) to allow egress from the aircraft.
Good view of those exits on the TK 737-800 that crashed short of the runway at AMS on February 25, 2009, with 9 fatalities.
WNCrew From United States of America, joined Jun 2006, 1317 posts, RR: 9 Reply 7, posted (3 years 2 months 9 hours ago) and read 15392 times:
I think the 73G exit looks much more sleek and modern, and the one pictured on the 757 looks old and outdated, much like ANY OWWE on an older style 737 classic or 757, 727 etc.
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
AAR90 From United States of America, joined Jan 2000, 3410 posts, RR: 50 Reply 9, posted (3 years 2 months 7 hours ago) and read 15155 times:
Quoting MD-90 (Reply 8): This may be a silly question but does anything keep the 737NG overwing exit from opening when the cabin is pressurized?
Yes, there is a "Flight Lock" system for the overwing exits.
The overwing emergency exits lock when:
• Three of the four Entry / Service doors are closed and
• Either engine is running and
• The airplane air / ground logic indicates that the airplane is in the air or both throttles are advanced.
*NO CARRIER* -- A Naval Aviator's worst nightmare!
Bluewave 707 From United States of America, joined Jun 2001, 3139 posts, RR: 8 Reply 10, posted (3 years 2 months 7 hours ago) and read 15131 times:
Does anyone know if Boeing offers a retrofit of the new 737 exit doors on other Boeings? Sounds like it would be a great idea ... especially when a jet goes in for a heavy mx check.
"The best use of your life will be to so live your life, that the use of your life will outlive your life" -- D Severn
UA777222 From United States of America, joined Dec 2003, 3348 posts, RR: 13 Reply 11, posted (3 years 1 month 4 weeks 1 day 19 hours ago) and read 14839 times:
Quoting Bluewave 707 (Reply 10): Does anyone know if Boeing offers a retrofit of the new 737 exit doors on other Boeings? Sounds like it would be a great idea ... especially when a jet goes in for a heavy mx check.
Its not as easy as just slamming on a bracket and putting a new door on.
I guess the major overhaul was to the design of the airframe around the pivot points of the over-wing doors. I don't think anyone is going to pull skin off to put doors that open quicker.
I agree though, the doors are far more efficient.
The top deck of the 744 has the same style, any other Boeing jets?
Viscount724 From Switzerland, joined Oct 2006, 21464 posts, RR: 24 Reply 12, posted (3 years 1 month 4 weeks 1 day 7 hours ago) and read 14600 times:
Quoting Bluewave 707 (Reply 10): Does anyone know if Boeing offers a retrofit of the new 737 exit doors on other Boeings? Sounds like it would be a great idea ... especially when a jet goes in for a heavy mx check.
That sounds like a very expensive modification. Why would an airline want to spend that kind of money if it's not required?
Aloha73G From United States of America, joined Jul 2003, 2301 posts, RR: 5 Reply 13, posted (3 years 1 month 4 weeks 1 day 6 hours ago) and read 14551 times:
Quoting m11stephen (Reply 5): Even in a perfect ditching, I could never imagine that procedure being carried out!
That was a little ridiculous. I can tell you that the water evaction for the 767 window exits were by far the most complicated, long & involved at Hawaiian, but nowhere near that. HA's commands express much more urgency and would have the raft inflated and passengers exiting in about 45 seconds (into the rafts stored in the overheads).
-Aloha!
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m11stephen From United States of America, joined Aug 2008, 1205 posts, RR: 1 Reply 14, posted (3 years 1 month 4 weeks 12 hours ago) and read 14367 times:
Quoting Aloha73G (Reply 13): That was a little ridiculous. I can tell you that the water evaction for the 767 window exits were by far the most complicated, long & involved at Hawaiian, but nowhere near that. HA's commands express much more urgency and would have the raft inflated and passengers exiting in about 45 seconds (into the rafts stored in the overheads).
I would think that the most important thing in a ditching is to get the passengers out fast. Although an airplane can "land on water" and be evacuated everyone needs to get out quick! This raft launching procedure that QF uses took almost five minutes. As US1549 showed, water landings can be survivable but its of the utmost important to get out quick. The rear F/A said that the water level in the back was at shoulder height and that was at about 90 seconds after impact... US1549 is about as perfect as a ditching can get.
If I was ever the F/A in a ditching I wouldn't waste time with launching rafts when its apparent that the airplane is sinking fast. I'd get the passengers out fast and then with the help of the other F/As launch the rafts if possible.
My opinions, statements, etc. are my own and do not have any association with those of any employer.
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