SXDFC
Topic Author
Posts: 1660
Joined: Sun Dec 09, 2007 6:07 pm

Boeing 737 "Bright Light" Question(s)

Sun Sep 14, 2008 10:37 pm

Yesterday as I was outside, I noticed a WN 73NG on approach, and as he made a turn I noticed the pilot putting on a "bright light" near the engine- I knew it wasn't the landing lights as this light was on the side of the aircraft its self. Here is a photo as an example :


View Large View Medium
Click here for bigger photo!

Photo © Paul Leach - New England Airports



The light that is in question is the bright one under neath the 6th window. Also it was a lot brighter. I also would like to know why this light is turned on during the approach?


Side note as well, since this plane was a 73NG I noticed that the "logo lights" were not turned on, is that the pilots choice or do certain rules apply to that as well?
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
EMBQA
Posts: 7797
Joined: Sat Oct 25, 2003 3:52 am

RE: Boeing 737 "Bright Light" Question(s)

Sun Sep 14, 2008 11:04 pm

Wing Ice Inspection Light....it's not limited to the 737... many if not all aircraft have them.

Not all aircraft have logo lights installed....

[Edited 2008-09-14 16:07:58]
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
A10WARTHOG
Posts: 200
Joined: Mon Jul 12, 2004 7:32 am

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 15, 2008 1:27 am



Quoting SXDFC (Thread starter):
Side note as well, since this plane was a 73NG I noticed that the "logo lights" were not turned on, is that the pilots choice or do certain rules apply to that as well?

As stated above some do not have logo lights. Some airlines have deactivate the logo lights to cut down on cost. The EMB-145 the logo light, work good as work light when working on the APU. But they are not much fun to change.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 15, 2008 8:35 am

The correct term is "Wing illumination Light"
As Implied...it illuminated the LE of the Wing to enable Ice detection visually.

Logo lights may not be installed on all B737.some operators deactivate it since its not a mandatory requirement for airworthiness....Helps bring down the costs too.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
User avatar
IFixPlanes
Posts: 239
Joined: Sun Feb 20, 2005 11:34 pm

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 15, 2008 9:29 am

Hi Mel,
you surely can you give me a AMM reference to change the "Wing illumination Light".
I din´t find it in the AMM.  confused 
never tell an engineer he is wrong ;-)
 
pilotaydin
Posts: 2099
Joined: Tue Sep 07, 2004 12:30 am

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 15, 2008 6:55 pm

the wing inspection light is VERY important, it helps us see the slats in the EXT and FULL EXT position if we have a LE DEVICE WARNING and it also shows us the condition of icing, on the leading edge....and it's quite hard to spot on some a/c because the inspection light isn't angled the same on all aircraft...
The only time there is too much fuel onboard, is when you're on fire!
 
Mender
Posts: 248
Joined: Wed Feb 04, 2004 9:36 am

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 15, 2008 9:54 pm



Quoting Pilotaydin (Reply 5):
the wing inspection light is VERY important, it helps us see the slats in the EXT and FULL EXT position if we have a LE DEVICE WARNING and it also shows us the condition of icing, on the leading edge

I've often wondered about the use of the wing illumination light as on some aircraft, for example B757/767 I don't believe you can't see the wings from the flight deck. Wouldn't the crew have to walk back into the cabin to inspect the wing?

If this is the case would a pilot have time to do this if a LE config warning was shown?
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 9:40 am



Quoting IFixPlanes (Reply 4):

Hi Mel,
you surely can you give me a AMM reference to change the "Wing illumination Light".
I din´t find it in the AMM.

AMM 33-41-11 pg 201.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
pilotaydin
Posts: 2099
Joined: Tue Sep 07, 2004 12:30 am

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 5:26 pm



Quoting Mender (Reply 6):
I've often wondered about the use of the wing illumination light as on some aircraft, for example B757/767 I don't believe you can't see the wings from the flight deck. Wouldn't the crew have to walk back into the cabin to inspect the wing?

If this is the case would a pilot have time to do this if a LE config warning was shown?

if we have a LE config problem, during takeoff we would get a takeoff config horn, which is sometimes confused with the altitude bust horn (Helios crash)
and in flight when we are approaching in and we get a LE device transit light, we would normally do the checklist, and if it doesnt resolve, most checklists result in a flap 15 landing... which is about a 30% higher V ref but the autobrakes on the 737 work wonders so it's almost always covered
The only time there is too much fuel onboard, is when you're on fire!
 
wilco737
Posts: 7279
Joined: Sun Jun 20, 2004 12:21 am

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 5:31 pm



Quoting Pilotaydin (Reply 8):
and if it doesnt resolve, most checklists result in a flap 15 landing... which is about a 30% higher V ref but the autobrakes on the 737 work wonders so it's almost always covered

Did that in EDI once. Was no big deal. Even with the 30% higher V ref no big deal. The 737 is a good aircraft
The good thing on the 737 was that I could see the wings from the cockpit. So this winglight is helpful to see if there is ice or if the leading edges are fully extended.
now on the MD11 I cannot even see the wingtip, no chance.

WILCO737 (MD11F)
 airplane 
 
twal1011727
Posts: 449
Joined: Thu Mar 23, 2006 5:36 am

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 8:19 pm

Airlines also use it for the "see and be seen" rule.

Helps make your airplane more visible to others out there.

KD
 
boeing767mech
Posts: 805
Joined: Fri Dec 15, 2000 5:03 pm

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 10:18 pm

I have noticed the guys coming over the pond use their wing scan lights. It seems when there feet are over land they switch off the the lights. I see this everytime I walk the dog which is about 1900 hours every night. I can't see the logo but I know it is a 747. The joy of living next to the water on the east coast.

David

[Edited 2008-09-16 15:32:42]
Never under-estimate the predictably of stupidty
 
AirframeAS
Posts: 9811
Joined: Thu Feb 05, 2004 3:56 pm

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 10:28 pm

Isn't it also used as a 'runway turn-off' light?

As for the logo light, that is on the horizontal stabs.
A Safe Flight Begins With Quality Maintenance On The Ground.
 
wilco737
Posts: 7279
Joined: Sun Jun 20, 2004 12:21 am

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 10:29 pm



Quoting AirframeAS (Reply 12):
Isn't it also used as a 'runway turn-off' light?

The 737 has separate runway turnoff lights. They point more to the front right than directly on the wing leading edge.

WILCO737 (MD11F)
 airplane 
 
boeing767mech
Posts: 805
Joined: Fri Dec 15, 2000 5:03 pm

RE: Boeing 737 "Bright Light" Question(s)

Tue Sep 16, 2008 11:16 pm



Quoting AirframeAS (Reply 12):
Isn't it also used as a 'runway turn-off' light

Wing scan lights are both on or both off, Runway turn off lights are Left or Right On/Off. Aviation's form of turn signals.

David
Never under-estimate the predictably of stupidty
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Wed Sep 17, 2008 10:07 am



Quoting AirframeAS (Reply 12):
Isn't it also used as a 'runway turn-off' light?
As for the logo light, that is on the horizontal stabs.

No.Runway turn off lights are of ahigher intensity & located on the Wing LE Inboard.
On the classics its on the Wingtip focussing on the Vertical Fin.

regdss
MEL
I may not win often, but I damn well never lose!!! ;)
 
User avatar
IFixPlanes
Posts: 239
Joined: Sun Feb 20, 2005 11:34 pm

RE: Boeing 737 "Bright Light" Question(s)

Wed Sep 17, 2008 5:45 pm

@Mel
There is no "wing illumination light" at AMM 33-41-11 pb 200.
What i find there is a "Wing scanning light".

You find the "wing illumination light" at AMM 33-41-00 pb 200.



Oh Mel, when you start nitpicking like "...The correct term is...", akt like a pro and add the A/C version!

"Wing illumination Light" on a B737NG.
"Wing scanning light" on a B737CL.
never tell an engineer he is wrong ;-)
 
SXDFC
Topic Author
Posts: 1660
Joined: Sun Dec 09, 2007 6:07 pm

RE: Boeing 737 "Bright Light" Question(s)

Wed Sep 17, 2008 10:04 pm



Quoting IFixPlanes (Reply 16):
"Wing illumination Light" on a B737NG.
"Wing scanning light" on a B737CL.

Well since the plane was a 73NG- I guess that means the light I saw was called the "Wing illumination light"  Wink
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 18, 2008 12:21 am

Quoting IFixPlanes (Reply 16):
Oh Mel, when you start nitpicking like "...The correct term is...", akt like a pro and add the A/C version!

nitpicking,akt,pb..ok you mean Act,pg....aka page.
But you are correct....I should def have mentioned the type.

Quoting IFixPlanes (Reply 16):
There is no "wing illumination light" at AMM 33-41-11 pb 200.
What i find there is a "Wing scanning light".

You find the "wing illumination light" at AMM 33-41-00 pb 200.

I still stand by the AMM ref in reply 7 for the B732 it is called wing illumination light & on the B737-600/700/800 its called the "wing illumination light" again with AMM ref at 33-41-00 pg 201.

Whats surprising is that you knew the reference yet asked me for it....I don't claim to be the expert in all things....But I visit this forum to share little & learn more from the rest out here.

Aviation is a Family that is very important to me. Cheers.


Are you saying the term is not "wing Illumination light"?

Quoting SXDFC (Reply 17):
Well since the plane was a 73NG- I guess that means the light I saw was called the "Wing illumination light"

 

regds
MEL...

]

[Edited 2008-09-17 17:55:23]
I may not win often, but I damn well never lose!!! ;)
 
A10WARTHOG
Posts: 200
Joined: Mon Jul 12, 2004 7:32 am

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 18, 2008 3:27 pm

This is a good example that terminology can change from different model type and manufacture.
Embraer calls those same light on the ERJ "wing inspection lights". They all do the same function.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Fri Sep 19, 2008 1:41 am



Quoting A10WARTHOG (Reply 19):

This is a good example that terminology can change from different model type and manufacture.

True.Its Amazing how a single manufacturer can have different terms for a common unit on different types.  Smile
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
A10WARTHOG
Posts: 200
Joined: Mon Jul 12, 2004 7:32 am

RE: Boeing 737 "Bright Light" Question(s)

Fri Sep 19, 2008 1:47 pm

Just wait til the 787 comes out. They change a lot of the terminology.
 
BAE146QT
Posts: 981
Joined: Sun Sep 24, 2006 4:58 am

RE: Boeing 737 "Bright Light" Question(s)

Fri Sep 19, 2008 4:49 pm



Quoting HAWK21M (Reply 18):
But I visit this forum to share little & learn more from the rest out here.

I don't want to get into a group hug here, but I just want to thank you and everyone else here who bothers to share the wealth of knowledge, even when the questions are a little banal or insane*.

I saw the intent in IFixPlanes's first post - it was obvious that (s)he was about to nitpick you straight back - and it was quite funny, but also a little uncomfortable to watch because it's not nice to see someone you respect being teased like that when a balanced, reasoned correction would have been better.



* And when the answers are insane, for that matter. (I'm looking at you, 2H4)  Smile
Todos mis dominós son totalmente pegajosos
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Sat Sep 20, 2008 6:31 pm



Quoting BAe146QT (Reply 22):
even when the questions are a little banal or insane*.

In Aviation...I've learnt that their is no stupid question only an question that has not been answered.  Smile
So go ahead with even the most stupidest question you think you may have & you'll be surprised & pleased with the Debate that would follow & the wealth of information that would generate......

Quoting BAe146QT (Reply 22):
I saw the intent in IFixPlanes's first post - it was obvious that (s)he was about to nitpick you straight back - and it was quite funny, but also a little uncomfortable to watch because it's not nice to see someone you respect being teased like that when a balanced, reasoned correction would have been better.

Personally I never thought it was a sarcatic comment by Ifixplanes earlier & a few posts later found it amusing....But then I guess I did answer it back as polite as I could be  Smile
My profile is not a hidden secret  wink 
I agree if a more knowledgable person in this field has some info to share/correction to make...Pls do so straight....This is why we are here....If Im wrong I'll thank you for the correction & if I'm correct,I'm glad I could clear a doubt.

On the topic...its amazing that how similiar equipment have terms so diffferent by one manufacturer & at times on a similiar model aircraft....That why we learn something everytime.

cheers.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
pilotaydin
Posts: 2099
Joined: Tue Sep 07, 2004 12:30 am

RE: Boeing 737 "Bright Light" Question(s)

Sat Sep 20, 2008 7:15 pm

back on track, we had some leading edge icing last night at FL 380 in some seriously thick stuff overhead Georgia * the country

so i flipped the wing inspection light on to see  Wink
The only time there is too much fuel onboard, is when you're on fire!
 
LASoctoberB6
Posts: 1936
Joined: Thu Nov 09, 2006 4:23 pm

RE: Boeing 737 "Bright Light" Question(s)

Sun Sep 21, 2008 4:43 am

I use that light when I'm recording.. Comes in handy..!
[NOT IN SERVICE] {WEStJet}
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Sun Sep 21, 2008 7:19 am



Quoting LASOctoberB6 (Reply 25):

I use that light when I'm recording.. Comes in handy..!

Recording? As in.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
AA737-823
Posts: 4897
Joined: Wed Mar 01, 2000 11:10 am

RE: Boeing 737 "Bright Light" Question(s)

Sun Sep 21, 2008 12:41 pm



Quoting Mender (Reply 6):
I've often wondered about the use of the wing illumination light as on some aircraft, for example B757/767 I don't believe you can't see the wings from the flight deck. Wouldn't the crew have to walk back into the cabin to inspect the wing?

The DC-9/MD-80 series aircraft also have an engine inlet illumination light... this task is accomplished by the wing illumination light on wing-mounted-engine airplanes, but on T-tails, you need more lights back there!
 
wilco737
Posts: 7279
Joined: Sun Jun 20, 2004 12:21 am

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 22, 2008 11:37 am



Quoting Kris (Reply 28):
Where is the switch for these lights? On the overhead panel with the rest of the light switches?

Yes, next to the Beacon and strobe lights, over the head of the FO.

WILCO737 (MD11F)
 airplane 
 
kris
Posts: 38
Joined: Wed Mar 15, 2006 7:51 pm

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 22, 2008 11:39 am

Where is the switch for these lights? On the overhead panel with the rest of the light switches?
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Mon Sep 22, 2008 2:58 pm



Quoting Kris (Reply 28):

Where is the switch for these lights? On the overhead panel with the rest of the light switches?

http://www.b737.org.uk/images/lighting_panel.jpg
On the Lower RH end of P5.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
SXDFC
Topic Author
Posts: 1660
Joined: Sun Dec 09, 2007 6:07 pm

RE: Boeing 737 "Bright Light" Question(s)

Wed Sep 24, 2008 12:46 am

I suppose its the button that says "wing"? I believe this panel is from a NG 737 right?
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Wed Sep 24, 2008 9:11 am



Quoting SXDFC (Reply 31):

I suppose its the button that says "wing"? I believe this panel is from a NG 737 right?

Heres the entire P5 panel of a B737-700

Observe lower RH Corner.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
boeing767mech
Posts: 805
Joined: Fri Dec 15, 2000 5:03 pm

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 25, 2008 1:33 pm

MEL... What is the dial in the top right hand corner of the overhead next to the audio select panel????

My 737's don't have this.

David
Never under-estimate the predictably of stupidty
 
Mender
Posts: 248
Joined: Wed Feb 04, 2004 9:36 am

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 25, 2008 3:57 pm

My guess it's an egg timer or the combination dial to the safe ;0)
 
arv79
Posts: 31
Joined: Mon Aug 23, 1999 3:57 am

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 25, 2008 4:38 pm



Quoting Mender (Reply 34):
My guess it's an egg timer or the combination dial to the safe ;0)

You might be right. If anyone has seen the Swiss MD-11 video by JustPlanes, there's a similar dial that the captain explains is just a timer.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Boeing 737 "Bright Light" Question(s)

Thu Sep 25, 2008 4:45 pm



Quoting Boeing767mech (Reply 33):

MEL... What is the dial in the top right hand corner of the overhead next to the audio select panel????

My 737's don't have this.

None of the B737s P5 panels I've noticed have them.But from what I've been told its a simple mechanical timer device that can be wound up.
regds
MEL
I may not win often, but I damn well never lose!!! ;)

Who is online

Users browsing this forum: No registered users and 17 guests