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SJCguy
Topic Author
Posts: 569
Joined: Thu Apr 05, 2001 4:39 pm

What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:33 pm

I notice out of the US carriers, TWA and United carry this black strip on the wings of certain aircraft. I believe all TWA planes have (had) it, and United's 737's carry it. What is this for?

SJCguy


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KAUSpilot
Posts: 1684
Joined: Mon Jan 28, 2002 2:15 pm

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:39 pm

Vortex Generators Possibly?
 
SJCguy
Topic Author
Posts: 569
Joined: Thu Apr 05, 2001 4:39 pm

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:41 pm

Negative, it's paint...

SJCguy
 
Guest

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:42 pm

I believe I read somewhere that it was textured and had to do with detection of clear ice on aircraft wings. I believe it will help make it more visible over the strip as well as the texture change if touched.

I'm just working off of assumed memories. I could very well be wrong.
 
chock head
Posts: 146
Joined: Tue May 07, 2002 1:11 pm

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:46 pm

Seiple is right on. It is not textured, just paint. Used a representative surface for deicing.
 
flyboy80
Posts: 2066
Joined: Fri Jul 13, 2001 8:10 am

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:48 pm

yeah i see it to im fact saw it tonight as a UA 735 pulle dinto EUG from SFO, although i do not beleive all ua planes have had them, i also recall seeing Lufthansa planes with these stripes. Sounds liek maybe its some kind of mark used for identification exept if that were the case it would cost less to just put something on the fuselauge, but then again you couldnt see it from the ground if the plane was airborne and it might be very disruptive to the colorscheme. It could be used maybe to protect soem vital or sensitive part as well, like was mentioned about the black noses on AA super 80s
Brian
 
SEA nw DC10
Posts: 471
Joined: Fri Oct 22, 1999 3:03 am

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:50 pm

It seems strange that AA would remove them upon aquisition of the MD80's and other aircraft...why would somthing of help such as this be such a characteristic of very few airlines and only those airlines?

SEA nw DC10
 
747-451
Posts: 2327
Joined: Wed Oct 04, 2000 5:50 am

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:53 pm

TWA did it so pilots could determine how much ice may have formed on the wings...
 
CX Flyboy
Posts: 6145
Joined: Sun Dec 26, 1999 6:10 pm

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 1:57 pm

We have it on our 777-300s so that during bad weather, when using the taxi cameras, you might not be able to see the main gear clearly, especially in rain at night, so the black stripes correspond with the position of the outboard tyres of the main gear, so we use them for taxiing.
 
Leo
Posts: 308
Joined: Wed May 24, 2006 11:32 pm

RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 4:28 pm

The black stripes have only one function:

# Assist pilots and mechanics with the visual identification of clear ice on the wings upper surface.
 
CX Flyboy
Posts: 6145
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RE: What's The Black Strip On Some Airlines' Wings?

Sat Jul 13, 2002 6:42 pm

Er....Leo, how about the function I just mentionned?
 
broke
Posts: 1299
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RE: What's The Black Strip On Some Airlines' Wings?

Mon Jul 15, 2002 11:26 pm

On December 27, 1991; SAS lost a MD-81 on take-off from Stockholm due to the ingestion into the engines of clear ice that had formed on the wing upper surfaces during the overnight layover. For more details see;

http://aviation-safety.net/database/1991/911227-0.htm

Finn Air developed a stripe for the upper inboard wing surface of the DC-9/MD-80 family to make it easier to visually detect the clear ice without having to go out on the wing. The FAA, by AD, mandated some sort of a clear ice detection system for these airplanes. The TWA MD-80's probably used some form of the Finn Air system; American must use something else that is approved by the FAA.
 
Mr.BA
Posts: 3310
Joined: Sun Sep 24, 2000 12:26 pm

RE: What's The Black Strip On Some Airlines' Wings?

Tue Jul 16, 2002 6:09 pm

A B777 pilot told me the same thing as Cx_flyboy has said.
Boeing747 万岁!
 
patlad
Posts: 32
Joined: Fri Sep 07, 2001 7:50 am

RE: What's The Black Strip On Some Airlines' Wings?

Tue Jul 16, 2002 6:47 pm


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Photo © Bailey



You can see on this photo, what Mr. BA and Cx_flyboy are talking about. You can see that as Cx_flyboy said, "the black stripes correspond with the position of the outboard tyres of the main gear"

Regards

Patlad
 
erj-145mech
Posts: 305
Joined: Tue Oct 02, 2001 4:21 am

RE: What's The Black Strip On Some Airlines' Wings?

Tue Jul 16, 2002 7:03 pm

In the original photo, the black "ice" strip is outboard of the engine. I believe that the black stripe in on inboard section is for the passenger emergency evacuation and the inflatatable slides. Taxiing is performed by keeping the nose wheel on the taxi way center stripe.
 
CX Flyboy
Posts: 6145
Joined: Sun Dec 26, 1999 6:10 pm

RE: What's The Black Strip On Some Airlines' Wings?

Wed Jul 17, 2002 12:00 pm

Obviously the nose gear follows the taxiway centerline, but on the 777-300, the main gear is about 100ft behind the pilots, so making turns on tight taxiways needs care, and this is where the taxi camera system, AND the black stripes on the wings comes in handy.

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