Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
united319
Topic Author
Posts: 446
Joined: Mon Jul 03, 2006 1:07 am

New Style Door Frames

Sat Apr 23, 2011 3:34 pm

Can somebody explain why airlines are re-doing the paint outline on the bottom of door frames? I know this is a random question but it's been puzzling me. Please see the pictures below for examples of what I am talking about.

This:


vs. This:



OR...

This:


vs. This:
It's Time To Fly
 
codc10
Posts: 3145
Joined: Sat Jul 08, 2000 7:18 am

RE: New Style Door Frames

Sat Apr 23, 2011 3:50 pm

FARs require a contrasting paint line around the visible part of any passenger exit door. The bottom 3" or so of the doors you illustrate are actually flaps that fold inward to allow the plug-type doors to slide out of the frame to open. When the door returns to the frame during the closing procedure, the flap folds back out so that the door is physically larger than the opening in the fuselage, preventing it from opening under any circumstances while the cabin is pressurized.
 
united319
Topic Author
Posts: 446
Joined: Mon Jul 03, 2006 1:07 am

RE: New Style Door Frames

Sat Apr 23, 2011 4:08 pm

Quoting CODC10 (Reply 1):
FARs require a contrasting paint line around the visible part of any passenger exit door. The bottom 3" or so of the doors you illustrate are actually flaps that fold inward to allow the plug-type doors to slide out of the frame to open. When the door returns to the frame during the closing procedure, the flap folds back out so that the door is physically larger than the opening in the fuselage, preventing it from opening under any circumstances while the cabin is pressurized.

I thought so. What about on Airbuses though? My airline has them on their Airbus but A319/A320/A321 doors do not have plugs or flaps.
It's Time To Fly
 
474218
Posts: 4510
Joined: Mon Oct 10, 2005 12:27 pm

RE: New Style Door Frames

Sat Apr 23, 2011 5:13 pm

Do you mean the stainless steel sill plate at the bottom of the door. It is there to prevent damage to the door threshold when people enter and exit!
 
united319
Topic Author
Posts: 446
Joined: Mon Jul 03, 2006 1:07 am

RE: New Style Door Frames

Sat Apr 23, 2011 6:26 pm

No I know what that is for, I drive jetbridges every day. I meant the outline of the door itself. The paint used to encompass the whole door rim, now it cuts off before the bottom of the door. I know Boeing Planes have the little plugs at the bottom but Airbus do not.
It's Time To Fly
 
Viscount724
Posts: 19316
Joined: Thu Oct 12, 2006 7:32 pm

RE: New Style Door Frames

Sat Apr 23, 2011 7:18 pm

Quoting 474218 (Reply 3):
Do you mean the stainless steel sill plate at the bottom of the door. It is there to prevent damage to the door threshold when people enter and exit!

I've always assumed that isn't painted as it would quickly get chipped and scratched from boarding/deplaning passengers' shoes.
 
WNCrew
Posts: 1004
Joined: Tue Jun 06, 2006 11:22 pm

RE: New Style Door Frames

Sat Apr 23, 2011 8:40 pm

Quoting united319 (Reply 4):
I meant the outline of the door itself. The paint used to encompass the whole door rim, now it cuts off before the bottom of the door.

This is PURELY a guess, but I'd say it's just something the painters did. Not a big deal, they know the regulations, but maybe whomever was painting said aircraft just decided to go above the flap vs below it like in some of your photos. At any rate they are still achieving compliance with the FAR. I too have seen it both ways.
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
alasizon
Posts: 2985
Joined: Sat Apr 28, 2007 8:57 pm

RE: New Style Door Frames

Sat Apr 23, 2011 8:41 pm

Quoting united319 (Reply 4):
The paint used to encompass the whole door rim, now it cuts off before the bottom of the door.

My guess might be that it shows the realistic outline of the inside of the door in terms of available space to walk in. Why on the other hand...
Airport (noun) - A construction site which airplanes tend to frequent
 
yeelep
Posts: 768
Joined: Mon Apr 04, 2011 7:53 pm

RE: New Style Door Frames

Sat Apr 23, 2011 9:37 pm

Quoting united319 (Thread starter):
Can somebody explain why airlines are re-doing the paint outline on the bottom of door frames?

Boeing has been delivering planes that way for a few years. I don't know why they are doing it, but I imagine there must be a reason.

Quoting WNCrew (Reply 6):
This is PURELY a guess, but I'd say it's just something the painters did.

Painters use detail drawings, they are not doing this randomly.

My best guess is the color of the outline paint does not contrast enough with the sill plate.
 
WNCrew
Posts: 1004
Joined: Tue Jun 06, 2006 11:22 pm

RE: New Style Door Frames

Sat Apr 23, 2011 9:51 pm

Quoting yeelep (Reply 8):
Painters use detail drawings, they are not doing this randomly.

Good to know! Learn something everyday...
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
User avatar
fr8mech
Posts: 8215
Joined: Mon Sep 26, 2005 9:00 am

RE: New Style Door Frames

Sat Apr 23, 2011 9:54 pm

Quoting WNCrew (Reply 6):
Not a big deal, they know the regulations, but maybe whomever was painting said aircraft just decided to go above the flap vs below it like in some of your photos.

Painters
When seconds count, the police are minutes away, or may not come at all.
It’s hard to win an argument with a smart person, but it’s damn near impossible to win an argument with a stupid person. ~B. Murray
Ego Bibere Capulus, Ut Aliis Sit Vivere
 
User avatar
TZTriStar500
Posts: 891
Joined: Sat Jan 03, 2004 1:33 am

RE: New Style Door Frames

Sun Apr 24, 2011 1:24 am

Quoting yeelep (Reply 8):
My best guess is the color of the outline paint does not contrast enough with the sill plate.

This is exactly the reason why. I found this guidance in AC 25-17A that explains this alternate compliance with 14 CFR 25.811 for exit band markings.

The FAA has been asked if compliance with §§ 25.811(f)(1) and (2) can be
found with the lower section of a two-inch colored band located a few-inches above the base of
an exit. Metal door sills are often installed on the fuselage below floor-level exits to provide
protection from impacts with loading equipment. If the band is located on the bottom edge of an
exit, its color must be compared with the door sill color to determine compliance with
§ 25.811(f)(2). This requirement can result in a color scheme which is not desired by the
operator. Note that painting the door sill is not considered a viable option since impacts with
loading equipment cause the paint to scratch and wear away quickly. If the band is located a
few-inches above the base of the exit, its color is compared with the door color below the band
instead of the metal door sill. This results in more color options for operators to choose from in
determining a desired color scheme.
35 years of American Trans Air/ATA Airlines, 1973-2008. A great little airline that will not be soon forgotten.

Who is online

Users browsing this forum: Baidu [Spider], Thrusty69 and 9 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos