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Old 02-15-2018, 03:42 PM
DeltaRomeo DeltaRomeo is offline
Join Date: Jan 2005
Location: Highland Village, TX
Posts: 4,390
Exclamation SB 18-02-02 Potential cracking in the horizontal stabilator front spar

Issued today:

RV-12. Before further flight.

"Inspect stabilator front spar for cracks. If cracks are not present the aircraft may be returned to service until the next 100 hour or annual inspection, when this service bulletin should be performed before further flight. If cracks are found, complete this SB immediately. Kits under construction should perform this SB prior to stabilator attachment or first flight."
Doug Reeves (your host)
"Don't ask me....I'm just improvising."
  • Full time: since '07 (started it in '96).
  • Available as Contract Pilot (ATP. PIC typed in G-V(450/550) and Phenom 300). Flying resume.
  • Part time: G450/550 and Phenom 300 seat support at CAE (KDFW).

Last edited by DeltaRomeo : 02-15-2018 at 04:04 PM.
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Old 02-15-2018, 04:01 PM
moosepileit moosepileit is offline
Join Date: Dec 2010
Location: Louisville, KY
Posts: 818
Default RV-12

Model RV-12
RV-6, bought from builder.
O-320, slider, carb, mags, FP
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Old 02-15-2018, 07:21 PM
MrSparkle MrSparkle is offline
Join Date: Sep 2017
Location: San Antonio, Texas
Posts: 12
Default Inspection for cracks

I assume that the only way to inspect the stabilator's front spar for cracks is to remove the stabilator and the hinge brackets. Agree/disagree?

Ian Heritch
RV-12 N417E
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Old 02-15-2018, 08:21 PM
alexe alexe is offline
Join Date: May 2013
Location: Temecula, CA
Posts: 304

Agree. At that point you might as well do the fix rather than waiting to do it at the next conditional inspection. This is not going to be fun!
Alex Erdelyi
RV-9A Purchased
RV-12 Built and Sold
Paid through December, 2022
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Old 02-15-2018, 08:26 PM
E. D. Eliot E. D. Eliot is offline
Join Date: Dec 2005
Location: San Pedro
Posts: 1,017
Default Want to comply!!

I do appreciate this SB and all of the work that the technical staff at Van's must have put into it. Would have liked to order tonight but can't because I'm not sure which new parts need to be ordered. I'll call tomorrow along with many of you.

Recommendation to Van's --- please add a short note that lists the parts need in order to comply. If Van's did that this time then I apologize profusely.

Thanks again for the SB.
Building finally
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Old 02-16-2018, 11:50 AM
Phantom30's Avatar
Phantom30 Phantom30 is offline
Join Date: Jul 2009
Location: Coeur d'Alene, ID/Casa Grande, AZ
Posts: 654

I kind of wonder if “over-tighting” of control cables might have something to do with this problem....just my trouble shooting mind @ work!

When adjusting and stretching stab cables; I tighten till cable slap stopped which was not as tight as gauge pressure was suppose to be... My concern being the fiber rollers the cables ran over. can jump in here to slap my hand anytime��
Ric Dickison
307 (CAB) Phantom
Search and Destroy (Can
Tho RVN)
Distinguished Flying Cross Society Member
CH-47 & UH-1H "Driver"
Rotax 9 Series Service IRMT

RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
2018 Dues Paid
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Old 02-15-2018, 10:08 PM
rgmwa rgmwa is offline
Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,722

Originally Posted by MrSparkle View Post
I assume that the only way to inspect the stabilator's front spar for cracks is to remove the stabilator and the hinge brackets. Agree/disagree?

Ian Heritch
RV-12 N417E
That's if you can actually see any cracks. They would be very easy to miss judging by the photos in the SB. I wonder what prompted Vans to look there, although I guess it's an obvious potential trouble spot when you think about it. This won't be a fun job, but if you have to pull everything apart to check you might as well bite the bullet and do the fix at the same time.
RV-12LR 912ULS 120346
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Old 02-15-2018, 10:33 PM
Harvey rv12 Harvey rv12 is offline
Join Date: Apr 2015
Location: Olympia WA
Posts: 201

Vans SB?s usually have a ?synopsis? detailing what prompted the bulletin.
This SB doesn?t say much. Would be interesting to learn how this was discovered.
Tom O.
RV-12, bought flying
Hoskins Field, 44T
Olympia WA

the bitterness of poor quality
lingers long after the cheap
price is forgotten.
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Old 02-16-2018, 06:21 AM
skydiverlv skydiverlv is offline
Join Date: Jul 2008
Location: kansas
Posts: 372

I like the 6hr labor estimate. That indicates how old and slow I am.

Larry Vandegrift
ULPower 260is
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Old 02-17-2018, 06:11 AM
Top Cat Top Cat is offline
Join Date: May 2014
Location: Fort Mill SC
Posts: 335

I’m a bit confused ( fairly common these days).

I ordered the 18-02-03 kit. See the home page on Vans website for SB details plus click on to order kit ($20 plus shipping).

However, reading the SB 18-02-02 at the end it says to order the 18-02-02 kit which i can’t find on the Vans site.
My RV-12 is 2014 SLSA.

What am I missing?

Last edited by Top Cat : 02-17-2018 at 06:13 AM.
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