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  #1  
Old 05-23-2016, 05:50 PM
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DeltaRomeo DeltaRomeo is offline
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Join Date: Jan 2005
Location: Highland Village, TX
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Exclamation SERVICE BULLETIN 16-05-23

Just went live on mothership.

WD-1230 Nose Fork cracks

http://www.vansaircraft.com/pdf/sb16-05-23.pdf
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Doug Reeves. N617AR. RV-6.
First Flight: 9/14/02.
As of 11/15/16: 2,201 landings. 1,141 RV hours (288 in formation).
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  #2  
Old 05-24-2016, 03:52 PM
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WingedFrog WingedFrog is offline
 
Join Date: Mar 2010
Location: Raleigh, NC
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Did inspection today, no crack found at hobbs 162.8 (I love my absence of wheel fairings )
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Builder's name: Jean-Pierre Bernoux
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Kit # 120395 N124BX
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  #3  
Old 05-24-2016, 04:40 PM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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I'm good at 100 TT with most flying off of grass.
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Jim Stricker
Hinckley, Ohio
PPL - 1970
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J3-Cub
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/2015 with 48TT - Hobbs now 220
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  #4  
Old 05-25-2016, 10:21 AM
mcems mcems is offline
 
Join Date: Apr 2008
Location: Salem SD
Posts: 142
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730 hours all off grass no cracks . No wheel pants.




Brad Stiefvater
Salem SD
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  #5  
Old 05-25-2016, 11:46 AM
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Piper J3 Piper J3 is offline
 
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Quote:
Originally Posted by mcems View Post
730 hours all off grass no cracks . No wheel pants. Brad Stiefvater
Salem SD
Question - Why no wheel pants when flying off grass? I fly off grass and like the pants to keep bottom of plane cleaner. Grass doesn't seem to accumulate in the pants however I'm constantly vigilant.
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Jim Stricker
Hinckley, Ohio
PPL - 1970
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J3-Cub
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/2015 with 48TT - Hobbs now 220
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  #6  
Old 05-25-2016, 12:57 PM
mcems mcems is offline
 
Join Date: Apr 2008
Location: Salem SD
Posts: 142
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I fly year round it avoids any problems with snow/ice. in these South Dakota winters.


Brad Stiefvater
Salem SD
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  #7  
Old 05-25-2016, 01:24 PM
redbaron redbaron is offline
 
Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 172
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To check ,inspect for cracks in my past we were required to remove the paint as the paint will cover up cracks. Any thoughts?
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  #8  
Old 05-25-2016, 01:59 PM
todehnal todehnal is offline
 
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
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170 hours, mostly hard surface, no cracks.
Incidentally, that is a pretty hefty fork. Surprised to see so many failures
I would think that a crack would show with or without paint
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2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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  #9  
Old 05-25-2016, 11:32 PM
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DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
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How very kind of Van's to issue the SB while I already have the plane apart and up on stands for its condition inspection. 240-some hours, no cracks. And yes, it does seem like a pretty hefty part.
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Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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  #10  
Old 05-26-2016, 06:05 AM
Bob Kibby Bob Kibby is offline
 
Join Date: May 2008
Location: Arlington, Texas
Posts: 116
Default Original and Replacement Nose Fork N712BK

I posted a photo of my nose wheel fork failure on 4/26/16 on the Nose Wheel Crack thread started by Andre Mendonca. The welds on the nose forks are significantly different. The weld bead on the replacement nose fork is much wider with a larger heat affected area radiating out from the edge of the weld indicating good weld penetration.

The original nose fork fractured completely as I was removing the tire. This cross section shows that there is no penetration in most of the weld. There is a pretty little fillet weld sitting on top of the “joined” pieces of metal to quote my structures guru.


Bob Kibby (N712BK, 295 hrs)
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