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07-18-2017, 06:47 AM
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Join Date: Apr 2014
Location: Tallahassee, FL
Posts: 38
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Lycoming SB 632 7/17/2017
I just saw this on a facebook post. Going to read the entire SB then try to track down serial numbers for my rods that were installed a couple of years ago during my OH to see if I have to do this. This could be a huge expense for some Lycoming owners.
EDIT: Looks like my engine won't be affected as my rods were shipped in 2014, before the specified time period.
http://www.lycoming.com/sites/defaul...0Removal_0.pdf
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Don Thompson
Tallahassee, FL
Hangar D-3 Quincy, FL (2J9)
N726DT RV 6 Flying
N4493J '67 Cherokee 140 sold
N2120J '78 Warrior II owned twice, sold twice
2017 Dues Paid
Last edited by Apexeon : 07-18-2017 at 07:55 AM.
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07-18-2017, 07:18 AM
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Join Date: Feb 2006
Location: Peachtree City, Georgia
Posts: 440
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Yup, our engine is on there. In fact, I'd say if you bought a Lyc in the past year, you're on there.
John
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John Goodman - 40572
First flight was 25 June, 2011
N711JG
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07-18-2017, 07:53 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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Yeesshhh.... this one might get ugly.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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07-18-2017, 08:04 AM
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Join Date: Nov 2010
Location: Boston Area
Posts: 135
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Quote:
Originally Posted by airguy
Yeesshhh.... this one might get ugly.
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I have not read in detail many Lycoming SBs. What I find interesting on this one is the warranty information is front and center, I have never seen the warranty information so prominently displayed before.
Tim
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07-18-2017, 09:09 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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Quote:
Originally Posted by tspear
I have not read in detail many Lycoming SBs. What I find interesting on this one is the warranty information is front and center, I have never seen the warranty information so prominently displayed before.
Tim
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That, and the time of compliance within next 10 hours to inspect....
Lycoming must realize they really stepped in something here - curious to hear the backstory on this one. At least its a relatively small time window for production.
My engine is not on the applicable list, I dodged this bullet.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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07-18-2017, 09:21 AM
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Join Date: Dec 2006
Location: Sumner, WA
Posts: 722
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Big bummer. I'm always amazed when something like this comes up as the engines really haven't changed since the 50's.
Have they ever been perfect or does one SB eventually just create another down the road after material and or procedures change? I'm guessing it is always work in progress after looking at the 74 pages of Service Bulletins Letters and Instructions.
Wow, tough business...
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Jeff Bloomquist
Sumner, WA
PP-ASEL, IR
RV-7A
Flying
1150 Hours
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07-18-2017, 09:35 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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Can you replace the con-rods and bearings without splitting the case? Doesn't look practical to me but I've never opened an engine either. This looks like a pretty invasive fix to a nearly new engine.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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07-18-2017, 09:47 AM
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Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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I didn't see a date for the engine/parts shipped but checked my S/N and luckily I am not affected
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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07-18-2017, 09:47 AM
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Join Date: Mar 2013
Location: Orlando, FL
Posts: 74
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Got my engine through Van's at SnF 2016. Still in box.
And it's on the SB list.
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Michael Albert
RV-7
Fuse.
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07-18-2017, 09:52 AM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,219
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Quote:
Originally Posted by airguy
Can you replace the con-rods and bearings without splitting the case? Doesn't look practical to me but I've never opened an engine either. This looks like a pretty invasive fix to a nearly new engine.
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It is invasive but can be done.
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Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
Last edited by Kyle Boatright : 07-18-2017 at 09:56 AM.
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