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Southwest Airlines 737 With LED Strobes  
User currently offlineRyDawg82 From United States of America, joined Sep 2001, 868 posts, RR: 8
Posted (1 year 2 months 3 days 5 hours ago) and read 7016 times:

Last night I saw a Southwest 737 fly over on approach to KDAL and the standard white wingtip strobes had been exchanged for white LED wingtip strobes. The red anti-colision and white tail strobes were still standard issue.

Does anyone have information about this modification? Will it be a conversion available on all 737s? Are there plans to changes the remaining strobes over to LED at some point?

Thanks,
Ryan


You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
28 replies: All unread, showing first 25:
 
User currently offlinebarney captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 1, posted (1 year 2 months 1 day 20 hours ago) and read 6676 times:

I'm unaware of any LED strobe installations on our a/c - but that certainly doesn't mean it's not happening. Did you happen to notice if it was a -300 or a -7/800? I've seen a few JetBlue 320's with the new winglets that also incorporated the LED strobes as you've described.


...from the Banana Republic....
User currently offlineRyDawg82 From United States of America, joined Sep 2001, 868 posts, RR: 8
Reply 2, posted (1 year 2 months 1 day 18 hours ago) and read 6636 times:

Quoting barney captain (Reply 1):

I'm unaware of any LED strobe installations on our a/c - but that certainly doesn't mean it's not happening. Did you happen to notice if it was a -300 or a -7/800? I've seen a few JetBlue 320's with the new winglets that also incorporated the LED strobes as you've described.

I believe it was a -700 on account the strobe was from the root of the winglet versus up high like on the -300s.

Ryan



You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlinebarney captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 3, posted (1 year 2 months 1 day 14 hours ago) and read 6575 times:

Quoting RyDawg82 (Reply 2):
I believe it was a -700 on account the strobe was from the root of the winglet versus up high like on the -300s.

Wow, great observation. I suspected it would have been on a classic, but as you pointed out, the strobe would have been higher on the winglet. I will be in Dallas over the weekend for training, let me see if I can find out anything.  



...from the Banana Republic....
User currently offlinefghtngsiouxatc From United States of America, joined Mar 2009, 218 posts, RR: 0
Reply 4, posted (1 year 1 month 4 weeks 1 day 16 hours ago) and read 6284 times:

I saw a WN 738 with LED strobes the other day while working at MDW. Must have been a brand spanking new delivery. I've only seen the one, and haven't seen another since. Oddly enough, the LEDs are only on the wingtip strobes, with a conventional strobe on the tail.

User currently offlineokie From United States of America, joined Jul 2003, 3188 posts, RR: 3
Reply 5, posted (1 year 1 month 4 weeks 1 day 5 hours ago) and read 6140 times:

Quoting fghtngsiouxatc (Reply 4):
Oddly enough, the LEDs are only on the wingtip strobes, with a conventional strobe on the tail.

I guess my question would be does that tail strobe have an LED light source with a conventional globe/lens?

Okie


User currently offlinerydawg82 From United States of America, joined Sep 2001, 868 posts, RR: 8
Reply 6, posted (1 year 1 month 4 weeks 1 day 4 hours ago) and read 6099 times:

The 747-8 also has LED wingtip strobes, while the tail strobe is a conventional strobe.

Ryan



You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlinecargolex From United States of America, joined Apr 2010, 1278 posts, RR: 8
Reply 7, posted (1 year 1 month 3 weeks 5 days 4 hours ago) and read 5759 times:

Quoting RyDawg82 (Thread starter):

Does anyone have information about this modification? Will it be a conversion available on all 737s?

I do not know about conversion (though I would imagine that conversion is not a particularly difficult thing to do), but new 737s began rolling off the line with LEDs on the wings over the summer.

I first noticed it while I was photographing this guy:


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Photo © A. Kwanten



User currently offlineQANTAS747-438 From United States of America, joined Jan 2001, 1984 posts, RR: 2
Reply 8, posted (1 year 1 month 3 weeks 3 days 18 hours ago) and read 5513 times:

Yes, new build -800s for WN have the LEDs. Saw one recently on N8617 or 8618 maybe.


My posts/replies are strictly my opinion and not that of any company, organization, or Southwest Airlines.
User currently offlineDocLightning From United States of America, joined Nov 2005, 20335 posts, RR: 59
Reply 9, posted (1 year 1 month 3 weeks 3 days 2 hours ago) and read 5363 times:

It does make a lot of sense. LEDs at the 5,000-6,000K color temperature seem easier to see than the lower color temperature of standard lights and strobes. And LEDs can be made to fade in/fade out, blink on and off, or strobe. Their "on/off" times are essentially instantaneous (you can cycle them at hundreds or thousands of Hz if you like). Also, they age by total time powered up, but by number of times powered up. And, honestly, once the LED is installed, a given airline might have to replace it once during the entire lifetime of the aircraft. They're an especially good choice for the exterior of aircraft because they perform well even at very low temperatures.

The big issue is that, while they're easy enough to replace for bulbs in your house, it might not be so simple in an airplane or a car. A LED's electrical behavior is different from standard bulbs/strobes and some vehicular electrical systems are finicky enough that a simple swap-out isn't possible.

Quoting rydawg82 (Reply 6):

The 747-8 also has LED wingtip strobes, while the tail strobe is a conventional strobe.

I wonder why they went that way.


User currently offlinebaqnav From United States of America, joined Jun 2013, 23 posts, RR: 0
Reply 10, posted (1 year 1 month 3 weeks 3 days 1 hour ago) and read 5352 times:
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N8617E, just flew her from MDW-BWI-TPA on Thursday. The wing is full LEDs (position and strobe). Looks sharp and much brighter.

[Edited 2013-10-26 13:03:01]


My opions are mine, not my employers
User currently offlinefghtngsiouxatc From United States of America, joined Mar 2009, 218 posts, RR: 0
Reply 11, posted (1 year 1 month 3 weeks 2 days 17 hours ago) and read 5234 times:

I saw another WN 738 with LEDs at MDW yesterday. The left strobe was either burnt out or inop. The right side worked and the (conventional) tail strobe worked, but the left one didn't blink. Looks like they're still working out some kinks...

User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 12, posted (1 year 1 month 3 weeks 2 days 13 hours ago) and read 5189 times:

Longer lasting and no need to replace the LEDs in service are def an advantage in terms of cost saving.

Anyone having a video link of how these LED strobes actually look like while functioning.



Think of the brighter side!
User currently offlineBarney Captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 13, posted (1 year 1 month 3 weeks 1 day 23 hours ago) and read 5082 times:

Interesting news. Does anyone know why the tail strobe is still conventional?


...from the Banana Republic....
User currently offlineSPREE34 From United States of America, joined Jun 2004, 2264 posts, RR: 9
Reply 14, posted (1 year 1 month 2 weeks 5 days 1 hour ago) and read 4756 times:

Quoting Barney Captain (Reply 13):

Interesting news. Does anyone know why the tail strobe is still conventional?

Wondered about that myself. It's the same way on the Airbus versions with sharklets, as well as the B748.



I don't understand everything I don't know about this.
User currently offlineokie From United States of America, joined Jul 2003, 3188 posts, RR: 3
Reply 15, posted (1 year 1 month 2 weeks 4 days 18 hours ago) and read 4697 times:

Quoting Barney Captain (Reply 13):
Interesting news. Does anyone know why the tail strobe is still conventional

Off hand I would say no real regulatory requirement but may require an approval before use.
My guess is that they are going to use up current stock of units before switching to the LED's. What would you do with say a hundred conventional assemblies when the replacement unit is eventually going to be LED's

Okie


User currently offlineshamrock137 From United States of America, joined Jul 2005, 167 posts, RR: 0
Reply 16, posted (1 year 1 month 2 weeks 4 days 18 hours ago) and read 4684 times:

Quoting Barney Captain (Reply 13):



Most likely because an LED tail strobe assembly would require additional certification. Both Boeing and Airbus were able to certify the wing lights as part of the winglet certification, while to change the tail would require an additional separate certification = more money.



Time to spare? Go by air!
User currently offlineBarney Captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 17, posted (1 year 1 month 2 weeks 4 days 12 hours ago) and read 4652 times:

Quoting shamrock137 (Reply 16):
Most likely because an LED tail strobe assembly would require additional certification. Both Boeing and Airbus were able to certify the wing lights as part of the winglet certification, while to change the tail would require an additional separate certification = more money.

Maybe. But this:

"The 747-8 also has LED wingtip strobes, while the tail strobe is a conventional strobe."

Makes me think there's more to it. Why would a newly certified aircraft also have this configuration?



...from the Banana Republic....
User currently offlinetjwgrr From United States of America, joined Mar 2000, 2503 posts, RR: 2
Reply 18, posted (1 year 1 month 2 weeks 4 days 5 hours ago) and read 4602 times:

Quoting HAWK21M (Reply 12):
Anyone having a video link of how these LED strobes actually look like while functioning.

748:
http://www.youtube.com/watch?v=roMydUSoIgs

788:
http://www.youtube.com/watch?v=1d4viIVhJBM

For some reason the strobes on the WN 738 look more like conventional ones and not LED:
http://www.youtube.com/watch?v=OuiozR9_9oE



Direct KNOBS, maintain 2700' until established on the localizer, cleared ILS runway 26 left approach.
User currently offlineBarney Captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 19, posted (1 year 1 month 2 weeks 4 days 4 hours ago) and read 4598 times:

Quoting tjwgrr (Reply 18):
For some reason the strobes on the WN 738 look more like conventional ones and not LED:

I believe those are conventional strobes. Someone mentioned it was just the last few -800's delivered that had the LED's.



...from the Banana Republic....
User currently offlinehotplane From , joined Dec 1969, posts, RR:
Reply 20, posted (1 year 1 month 1 week 6 days 23 hours ago) and read 4292 times:

El Al -900s also have 787-style strobes. Anti col light standard though.

User currently offlineBarney Captain From United States of America, joined Nov 2001, 997 posts, RR: 12
Reply 21, posted (1 year 1 month 1 week 5 days 2 hours ago) and read 4133 times:

They're definitely out there - well, at least one. I caught a glimpse last night of a SWA (I assume -800) landing in SAN with the LED strobes.


...from the Banana Republic....
User currently offlineDocLightning From United States of America, joined Nov 2005, 20335 posts, RR: 59
Reply 22, posted (1 year 1 month 1 week 2 days 21 hours ago) and read 3947 times:

Are all exterior lights on the 787 LED or are the spotlights something else?

User currently offlineNOLAWildcat From United States of America, joined Oct 2013, 34 posts, RR: 0
Reply 23, posted (1 year 1 month 1 week 2 days 16 hours ago) and read 3863 times:

At the risk of moving slightly off-topic, does anyone know if United has installed LED strobes on some of their older aircraft? I was driving down 101 towards SFO last week and observed what looked like a 767 or 757 (definitely not a new delivery 737 or 787 as it was in United's old Blue scheme) with the new LED wingtip strobes.


Wall-to-wall Football is ruining my weekend.
User currently offlineskyhawkmatthew From Australia, joined Oct 2005, 185 posts, RR: 0
Reply 24, posted (1 year 1 month 1 week 2 days 14 hours ago) and read 3844 times:

Quoting DocLightning (Reply 22):
Are all exterior lights on the 787 LED or are the spotlights something else?

Strobes, beacon, position lights are LED; landing, taxi, inspection, etc spotlights are HID Xenons.



Qantas - The Spirit of Australia.
25 HAWK21M : Thanks Interesting video esp the B787.
26 united319 : I flew on a brand new UA739ER this week LAX-MSY and it was the 250th next-gen for United as well. It had the LED strobes. The beacon lights were norma
27 Post contains images Max Q : Seriously, this has to be one of the nerdiest post's.. Even for A. net, and yes, I am guiltier than most
28 yeelep : Alaska also has led wingtip strobes on its latest 900ER's. N431AS, N433AS, N435AS, N440AS.[Edited 2013-11-23 09:16:18]
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