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  #1  
Old 09-30-2016, 03:25 PM
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DeltaRomeo DeltaRomeo is offline
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Exclamation SERVICE BULLETIN 16-08-01 (released Oct 1, 2016)

Date Released: October 1st, 2016
Date Effective: October 1st, 2016
Subject: Stabilator Bearing Inspection
Affected Models: All RV-12 w/ Emp/Tailcone Kits delivered prior to August 1, 2016
All SLSA RV-12 aircraft delivered prior to August 1, 2016
Required Action: Inspect stabilator bearing security
Time of Compliance: Before further flight (Step 1 and Step 2)
During each preflight inspection (Step 1)
At each annual condition/100 hour inspection thereafter (Step 2).

continue:
http://www.vansaircraft.com/pdf/sb16-08-01.pdf
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  #2  
Old 09-30-2016, 03:56 PM
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Wow, they must have released in Europe or Asia. It's still Sept 30th here.
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  #3  
Old 09-30-2016, 06:23 PM
AZLeeJay AZLeeJay is online now
 
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Wouldn't it be nice if Van's would post a video of exactly where the "flat wood" should be placed and then where the thumping should commence.
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  #4  
Old 09-30-2016, 07:47 PM
PilotBrent PilotBrent is offline
 
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Quote:
Originally Posted by AZLeeJay View Post
Wouldn't it be nice if Van's would post a video of exactly where the "flat wood" should be placed and then where the thumping should commence.
Pine, oak, spruce, I think we need some direction on the type of wood to be using for this SB.....
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  #5  
Old 09-30-2016, 10:35 PM
rv9builder rv9builder is offline
 
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What’s the correct procedure if your tailcone kit shipped before August 1, 2016, but you haven’t riveted the VA-146 bearings to the F-1211B bulkhead doubler and F-1211-C hinge brackets? Are there “new and improved” VA-146 bearings we should order that don’t have this issue, or should we just apply Loctite 648 as described in the service bulletin? Or maybe there's a revision to the kit assembly instructions that we should follow?
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Last edited by rv9builder : 09-30-2016 at 10:44 PM.
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  #6  
Old 10-01-2016, 12:52 AM
rgmwa rgmwa is offline
 
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Location: Perth, Western Australia
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Quote:
Originally Posted by AZLeeJay View Post
Wouldn't it be nice if Van's would post a video of exactly where the "flat wood" should be placed and then where the thumping should commence.
I think step 2 on the SB explains it fairly well, but maybe a sketch on the SB would be a good idea?
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  #7  
Old 10-01-2016, 06:33 AM
Mich48041 Mich48041 is offline
 
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The purpose of the wood is to protect the stabilator from your hand and to protect your hand from sharp aluminum. The wood also evenly distributes the striking force to the stabilator. The wood should be placed near the end of the spar. The object of the test is to determine how much horizontal side to side play there is, and if the stabilator will move far enough to rub on the tail cone fairing. A pilot would not want the stabilator to become jammed.
During preflight inspections, a steady horizontal force can be applied to the end of the stabilator while moving it up and down, looking for any binding.
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Last edited by Mich48041 : 10-01-2016 at 07:09 AM. Reason: Added sentence
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  #8  
Old 10-03-2016, 09:41 PM
alexe alexe is offline
 
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My HS tested fine. Has anyone in the group found an issue with the bearings so far?
Alex
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  #9  
Old 10-15-2016, 10:37 AM
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WingedFrog WingedFrog is offline
 
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Quote:
Originally Posted by alexe View Post
My HS tested fine. Has anyone in the group found an issue with the bearings so far?
Alex
No problem checking during my annual, but... I have some qualms about " five good ‘thumps’ with the palm of your hand". Is there not a risk to dislodge stabilator bearings that are perfectly fitted into their housing? Needless to say my "good thumps" were not that heart felt! Anyhow the clearance between stabilator and tailcone skin is so small on each side that I believe the preflight check should detect any offset through the swing inspection of the stabilator.
Let me know if I am wrong.
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  #10  
Old 10-15-2016, 08:13 PM
funflying funflying is offline
 
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My skin distance from the screws on the tail cone fairing is pretty close. I had never experienced any clearance issues, and always check the movement of the stabilator during pre-flight. I followed this Service Bulletin and discovered a slight rubbing of the skin on the Rt. side skin and screw in the center of the fairing.

I did the "thumping" again and no slight scrapping. I emailed Vans support and they felt a slight movement would not cause a bearing replacement, but I should consider some skin relief near the screws with the close clearance. I had planned to do a little more relief at annual when I had the fairing off for inspection.
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