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What Ever Happened To The Only Wingleted 737-200?  
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Posted (3 years 2 months 3 weeks 15 hours ago) and read 14122 times:

You know which jet I'm referring to, right? ZS-SIO (cn 21792/628)? Here's a photo refresher:

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Photo © Julian Whitelaw


Yep, crazy as it both looks and sounds, a Boeing 737-200 was indeed retrofitted with a small semi-blended winglet of a style similar to that of the 747-400. Perhaps you can help me play detective in learning more about Ship 628.

According to Chris Brady's research, the winglet modification is courtesy of the well-known Quiet Wing Corp and the STC for the mod was approved in 2005. Per Chris, The package includes drooping the TE flaps by 4 degrees and the ailerons by 1 degree to increase to camber of the wing. Benefits include:

  • --Payload Increase of up to 5,000 lbs.    (seems suspect combined with the fuel savings below)
  • --Range Increase up to 3%
  • --Fuel Savings up to 3%
  • --Improved Takeoff/Landing Climb Gradients
  • --Reduced Takeoff/Landing Field Length
  • --Improved High Altitude Takeoff/Landing Capability
  • --Improved Hot Climate Performance
  • --Reduced Stall Speeds by 4-5kts

Ship 628 has a relatively unremarkable history considering her fleet type, having flown for 4-5 operators in her 32 year history. Most B732s have accumulated a list of operators double that size by their 30th birthday. She flew for the first 15 years for British Airways, then to LAN for 5 more years, and finally to Africa to join the rest of her cousins. She flew for South African for a short while, and then evidently ended her career at Safair. This is where the details get hazy..


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Photo © Eduard Marmet
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Photo © Johan Ljungdahl


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Photo © Julian Whitelaw
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Photo © Konstantin von Wedelstaedt


Despite the a.net photo timeline, (which could be slightly out of pace with the winglet mod and Safair service) the first photo in this thread seems to indicate that Naturelink (now National Airways Corp.) somehow acquired ship 628 and modified her with the winglets pictured above.. perhaps as an "assignee" for Quiet Wing? Only a few photos exist after this modification took place, and they show ship 628 in an all-white livery with a small "Safair" logo under the cockpit windows sans winglets. The 4th photo in the set above (bottom-right) is a shot Konstantin snagged of Ship 628 in said condition in 7/29/06 (post winglet mod, according to the date of the Naturelink shot taken by Julian).

So what happened to Ship 628? History tells us that many "upgraded" testbeds are not seen as historically significant after testing is complete and an STC is released.. rumor has it ship 628 is "rotting away in less-than-ideal storage conditions" perhaps at Hosea Kutako (FYWH). Does anyone else have any information on Ship 628? It seems unusual to me that the winglet modifications would be removed so soon after the modifications were made to the aircraft.. but perhaps I am wrong and she still bears the winglets after all?


"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
17 replies: All unread, jump to last
 
User currently offline93Sierra From United States of America, joined Apr 2010, 417 posts, RR: 0
Reply 1, posted (3 years 2 months 3 weeks 15 hours ago) and read 14033 times:

Thanks for the very interesting info, I had no that a 200 received winglets

User currently offlinefrancoflier From France, joined Oct 2001, 3736 posts, RR: 11
Reply 2, posted (3 years 2 months 3 weeks 15 hours ago) and read 13970 times:

Did it ever fly with the winglets? Or was Quit Wings showing them off trying to gather interest?

If they did get an STC for them, then it must have been a monumental loss of money...

Anyhow, thanks for the interesting story, and sorry about adding more questions rather than answering the previous.
No worries though, 2H4's ears will be ringing by now.



Looks like I picked the wrong week to quit posting...
User currently offlinemalaysia From United States of America, joined Nov 1999, 3330 posts, RR: 0
Reply 3, posted (3 years 2 months 3 weeks 14 hours ago) and read 13741 times:

Well I notice with the modification photo, are there no nav lights?


There Are Those Who Believe That There May Yet Be Other Airlines Who Even Now Fight To Survive Beyond The Heavens
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 4, posted (3 years 2 months 3 weeks 13 hours ago) and read 13638 times:

Quoting francoflier (Reply 2):

Did it ever fly with the winglets? Or was Quit Wings showing them off trying to gather interest?

To be fair, I'm not sure.. though I think it would be difficult to both A) get an STC approved and B) get the "advantages" documented without a modification to an actual aircraft with flight testing. But you may be on to something.

Quoting francoflier (Reply 2):
If they did get an STC for them, then it must have been a monumental loss of money... Anyhow, thanks for the interesting story, and sorry about adding more questions rather than answering the previous.

No problem! It's a peculiar blip in the history of the 737-200. I think QW could have been looking at a possible modification to support the overwhelming majority of 737-200 operators by utilizing an aircraft/company in Africa to promote it. I'm still looking at the STC database, but A16WE (modified in 2005) does state: "Incorporation of certain modifications in the aileron and flap systems in accordance with Quiet Wing Technologies, Incorporated, Master Drawing List No. QW-00001,
Revision H, dated May 18, 2005, or later FAA approved revision."

Quoting malaysia (Reply 3):
Well I notice with the modification photo, are there no nav lights?

Interesting observation. Somehow, I hadn't caught that.. but I had considered that this could be a "sheath" over the left wingtip for marketing purposes. And on that note, I've also wondered about the "Naturelink" tail.. it almost appears photo-shopped.

[Edited 2011-05-06 11:24:06]


"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
User currently offlinesw733 From United States of America, joined Feb 2004, 6299 posts, RR: 9
Reply 5, posted (3 years 2 months 3 weeks 13 hours ago) and read 13611 times:

Quoting malaysia (Reply 3):
Well I notice with the modification photo, are there no nav lights?

That popped out at me too.


User currently offlineGarpd From UK - Scotland, joined Aug 2005, 2623 posts, RR: 4
Reply 6, posted (3 years 2 months 3 weeks 12 hours ago) and read 13355 times:

Quoting malaysia (Reply 3):
Well I notice with the modification photo, are there no nav lights?

I spotted that too.
Perhaps it was a static display to drum up interest at a local airshow or something?



arpdesign.wordpress.com
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 7, posted (3 years 2 months 3 weeks 12 hours ago) and read 13321 times:

Quoting Garpd (Reply 7):
Perhaps it was a static display to drum up interest at a local airshow or something?

I'm thinking the same thing.. but then that begs the question: What aircraft was used for the QW modifications as a testbed?



"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
User currently offlineGarpd From UK - Scotland, joined Aug 2005, 2623 posts, RR: 4
Reply 8, posted (3 years 2 months 3 weeks 12 hours ago) and read 13299 times:

Do we know if they ever got airborne? Perhaps what we see in the photo is a prototype developed from wind tunnel testing?

[Edited 2011-05-06 12:41:30]


arpdesign.wordpress.com
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 9, posted (3 years 2 months 3 weeks 11 hours ago) and read 12989 times:

Quoting Garpd (Reply 8):

Do we know if they ever got airborne? Perhaps what we see in the photo is a prototype developed from wind tunnel testing?

Hard to tell really.. the STC doesn't give much information, there's 1 known photograph available on the net, Quiet Wing is not actively advertising the STC. In fact, Quiet Wing's website is down now too.

I did happen to locate another photo of ZS-SIO with the "Natureland" inscriptions, so at least there's corroborating evidence that the photo was not shopped. In this photo, however, no winglet or exposed wing/patches, etc.



"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
User currently offlineKingFriday013 From United States of America, joined May 2007, 1296 posts, RR: 9
Reply 10, posted (3 years 2 months 3 weeks 6 hours ago) and read 12413 times:

It reminds me a lot of when they had that MD-80 fitted with winglets, but they could only be attached while the plane was on the ground (i.e. it couldn't fly with them).


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Photo © A J Best


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Photo © Stewart Andrew
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Photo © A J Best



-J.



Tho' I've belted you an' flayed you, By the livin' Gawd that made you, You're a better man than I am, Gunga Din!
User currently offlineDL_Mech From United States of America, joined Feb 2000, 1926 posts, RR: 9
Reply 11, posted (3 years 2 months 3 weeks 5 hours ago) and read 11919 times:

It looks like a temp installation to me. There are screws every ten inches or so on the lower attach point (look for the dimples) vs. a screw every inch or so on a normal wingtip installation.



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Photo © Julian Whitelaw




This plane is built to withstand anything... except a bad pilot.
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 12, posted (3 years 2 months 3 weeks 4 hours ago) and read 11400 times:

Quoting DL_Mech (Reply 11):
It looks like a temp installation to me. There are screws every ten inches or so on the lower attach point (look for the dimples) vs. a screw every inch or so on a normal wingtip installation.

Excellent observation. How do you suppose QW secured the STC without a flying testbed?



"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
User currently offlinefalstaff From United States of America, joined Jun 2006, 6075 posts, RR: 29
Reply 13, posted (3 years 2 months 2 weeks 6 days 18 hours ago) and read 6547 times:
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Quoting KingFriday013 (Reply 10):
It reminds me a lot of when they had that MD-80 fitted with winglets, but they could only be attached while the plane was on the ground (i.e. it couldn't fly with them).


I swear I saw an "MD something" fly over the house (going into DTW) last week that I swear had winglets. It didn't have DL or AA colors or any airline colors I could make out. I did a double take because when I saw the winglet I thought I mistook it for a CRJ, but it wasn't.



My mug slaketh over on Falstaff N503
User currently offlinedebonair From Germany, joined Jan 2004, 2399 posts, RR: 4
Reply 14, posted (3 years 2 months 2 weeks 6 days 17 hours ago) and read 6255 times:

And the plane in its full beauty:


MyAviation.net photo:
Click here for bigger photo!
Photo © Andre Kok



chriX


User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 15, posted (3 years 2 months 2 weeks 6 days 8 hours ago) and read 4692 times:

Quoting debonair (Reply 14):
And the plane in its full beauty:

Wow, that's fantastic. Interesting to see it on the right wing as well.. perhaps it was capable for flight test use? Any engineers want to chime in on the subject?



"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
User currently offlineKingFriday013 From United States of America, joined May 2007, 1296 posts, RR: 9
Reply 16, posted (3 years 2 months 2 weeks 5 days 16 hours ago) and read 4139 times:

Quoting falstaff (Reply 13):
I swear I saw an "MD something" fly over the house (going into DTW) last week that I swear had winglets. It didn't have DL or AA colors or any airline colors I could make out. I did a double take because when I saw the winglet I thought I mistook it for a CRJ, but it wasn't.

That's impossible. What you may have noticed was how the tips of the wings on the MD-80 are swept back slightly more than the rest of the wing, so they're at the same angle as the leading edge.


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Photo © Ken Iwelumo - Global Aviation Images
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Photo © Magnus Viktorsson


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Photo © Verrees Jacques
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Photo © Youri Thonon - Contrails Aviation Photography



Otherwise, it wasn't a MD-80/90/DC-9/B717. The only MD aircraft I know of that has winglets is the MD-11.

-J.



Tho' I've belted you an' flayed you, By the livin' Gawd that made you, You're a better man than I am, Gunga Din!
User currently offlinemrskyguy From United States of America, joined Aug 2008, 1214 posts, RR: 3
Reply 17, posted (3 years 2 months 2 weeks 5 days 15 hours ago) and read 4072 times:

So much for an on-topic post..   


"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
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