X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 22 Jul 2013 15:28:29 -0400 Message-ID: X-Original-Return-Path: Received: from nm30-vm6.bullet.mail.ne1.yahoo.com ([98.138.91.123] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTPS id 6383119 for lml@lancaironline.net; Mon, 22 Jul 2013 13:57:19 -0400 Received-SPF: none receiver=logan.com; client-ip=98.138.91.123; envelope-from=loantracy@sbcglobal.net Received: from [98.138.226.177] by nm30.bullet.mail.ne1.yahoo.com with NNFMP; 22 Jul 2013 17:56:43 -0000 Received: from [98.138.84.41] by tm12.bullet.mail.ne1.yahoo.com with NNFMP; 22 Jul 2013 17:56:43 -0000 Received: from [127.0.0.1] by smtp109.mail.ne1.yahoo.com with NNFMP; 22 Jul 2013 17:56:43 -0000 X-Yahoo-Newman-Id: 204185.616.bm@smtp109.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: OHsNL2IVM1n20D0LD2cF4kOsjXo7BHrQmOePbAZlrEC.aUA v9saaS714dAcf2P5pH.p.L5YTUzGMxxvU3MHKc64AsD_u3BHadkTmuURt7lw 2Q4OvcXAW91eZGBbHjAiiSPMxcresUsS1ElVXWIbbFr9SN76JlE39Fbsj98R nDWxXhsjw2hzvUZeM3LOots_wTMXkNr5iB84K.1Iv7b6qFd2ZW44lWR8xXTb o3F96N_X3nXamsAkNsvNwyOiDNAA3AmD8YZDwtzEHEBO_h1j1AkCljg.FFiG Ga_ERBWBkRWRgJQfEGlUxvo9M9ypXfSOmwq.0PHtDDII.4NcnbaDsxJdxTYC BqQaS9Z9HB5Z2TsKpUiWV7srd_60ISzmmplrmcUnqaC6bgXllTb971q3R0Sa njEGqyBLHXNcwXM_hbL.V0gRc8dufKazW7L1amA34iYFkwufNyKSFUIG.Ogv iwuj8N2B3cPzx.pg461KLse.vY4pZ2yYSWrEFNd.VrnauNxNP2Li2l2Me.7c i9crA.i5CoNQB.yfS4TlMyN3sZ.K4pWEnlsE_BHWmO_zd X-Yahoo-SMTP: LN43WayswBDMCJzZGaCEPUD2CdoSRuZ0PBcoiPUOut_8JSgD X-Rocket-Received: from [10.0.1.20] (loantracy@99.137.236.248 with ) by smtp109.mail.ne1.yahoo.com with SMTP; 22 Jul 2013 10:56:43 -0700 PDT Subject: Re: [LML] Re: Potential Problem-Engine Vibration References: From: Jeff Pelletier Content-Type: multipart/alternative; boundary=Apple-Mail-D5ACCC1D-FD6E-41FA-867D-7F0108ACC604 X-Mailer: iPhone Mail (10B350) In-Reply-To: X-Original-Message-Id: X-Original-Date: Mon, 22 Jul 2013 10:56:39 -0700 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-D5ACCC1D-FD6E-41FA-867D-7F0108ACC604 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Yes please Sent from my iPhone On Jul 22, 2013, at 10:43 AM, George Wehrung wrote: > If anyone is interested I can send them the Hartzell manual in .pdf >=20 >=20 >=20 > On Jul 22, 2013, at 9:27 AM, Bob Rickard wrote: >=20 >> Prop is HC-H3YF-1RF with TSIO-550E on L-IVP >>=20 >> Bob >>=20 >>=20 >> On Jul 21, 2013, at 11:13 PM, Colyn Case wrote:= >>=20 >>> Bob , Can you please specify the model number of the blades and hub? M= ore than one exist which match "78 inch Hartzell" >>>=20 >>> Colyn >>>=20 >>> Sent from my iPhone >>>=20 >>> On Jul 21, 2013, at 11:54 PM, Robert R Pastusek wro= te: >>>=20 >>>> Gentlemen, >>>> =20 >>>> This is an alert for a potentially serious problem with the Continental= IO/TSIO-550 engine/Hartzell 78=E2=80=9D Scimitar propeller combination comm= only used on Lancair aircraft. Please appreciate that this is from a very sm= all data sample, and analysis is on-going, but it=E2=80=99s important enough= to share what we now know.=20 >>>> =20 >>>> Lancair (N619SJ) owner Bob Rickard called last week to advise that he=E2= =80=99d discovered a major crack in his crankshaft at the propeller flange a= nd wanted to alert other owners flying the above engine/prop combination of h= is problem.=20 >>>> =20 >>>> Bob has been chasing a random vibration in his airframe since he bought= the aircraft three years/approximately 500 hours ago. The =E2=80=9Cstandard= suspects=E2=80=9D of prop balance/run-out, engine mount/isolators, engine c= ontact with the cowling, etc. had been systematically ruled out over time. I= n frustration, and unwilling to just ignore it, Bob ordered a new MT 4-blade= to replace the Hartzell, remaining very uncomfortable with the vibration an= d unable to think of any other possible fixes. Part of Bob=E2=80=99s discomf= ort was based on the fact that he=E2=80=99d talked extensively to Ed Smith w= ho had similar vibration issues with the same engine/propeller combination. (= Ed=E2=80=99s N9JE experienced an in-flight crankshaft failure/departure of t= he prop in 2010; Ed successfully dead-sticked the airplane onto a beach.) >>>> =20 >>>> Bob=E2=80=99s recent discovery of the cracked crankshaft was made when t= he Hartzell was removed for replacement with a new MT prop. At the time of r= emoval/discovery, the engine had just more than 100 flight hours since major= overhaul. The crankshaft had been checked for cracks at overhaul, and the a= ctual eddy current test results were still available showing no cracks or ir= regularities at that time. Bob believes that the crack developed within the l= ast 100 flight hours as a result of long-term exposure to harmonic vibration= , and that this vibration could be a result of an incompatibility between hi= s big-bore Continental and this specific Hartzell prop. He notes that althou= gh this is an =E2=80=9CFAA approved=E2=80=9D engine/propeller combination, h= e has talked to other airplane owners flying this combination who have/are e= xperiencing similar vibration issues.=20 >>>> =20 >>>> We understand that Continental and the FAA have been notified of this p= roblem, but we have no additional information at this time. LOBO expects to p= ublish a more detailed report on this in the next monthly newsletter, but bo= th Ed Smith and Bob Rickard felt this discovery was worth making immediate n= otification about. Specifically, any unusual or new engine vibration should b= e cause for immediate attention. Bob considers himself very lucky to have ca= ught the crack before in-flight failure.=20 >>>> =20 >>>> We=E2=80=99ll devote a few minutes to share what we know/answer questio= ns at our LOBO Safety Forum to be held at 1300 in Forum Pavilion 2, Monday, 2= 9 August, at AirVenture. Bob Rickard won=E2=80=99t be available to discuss t= his at our safety forum, but you can email him at r.rickard@rcginc-us.com. L= OBO would also appreciate an email or call (rpastusek@htii.com 757-286-4802)= if you are experiencing similar problems. >>>> =20 >>>> Thanks, >>>> Bob Pastusek >>>> For LOBO >>=20 >> >>=20 >> Bob Rickard >> President, Rickard Consulting Group, Inc. >> r.rickard@rcginc-us.com >=20 --Apple-Mail-D5ACCC1D-FD6E-41FA-867D-7F0108ACC604 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Yes please

Sent from my iPhone<= /div>

On Jul 22, 2013, at 10:43 AM, George Wehrung <gw5@me.com> wrote:

If anyone is interested I can send them the Hartzell manual in= .pdf



On Jul 22, 2013, at 9:= 27 AM, Bob Rickard <r.rickard@= rcginc-us.com> wrote:

Prop is HC-H3YF-1RF w= ith TSIO-550E on L-IVP

Bob


<= div>
On Jul 21, 2013, at 11:13 PM, Colyn Case <colyncase@earthlink.net> wrote:

Bo= b ,   Can you please specify the model number of the blades and hub? &n= bsp;More than one exist which match "78 inch Hartzell"

<= div>Colyn

Sent from my iPhone

On Jul 21, 2013, a= t 11:54 PM, Robert R Pastusek <rpas= tusek@htii.com> wrote:

= 
Gentlemen,
 
This is an alert for a potentially serious problem with the Continental I=
O/TSIO-550 engine/Hartzell 78=E2=80=9D Scimita=
r propeller combination commonly used on Lancair aircraft. Please appreciate=
 that this is from a very small data sample, and analysis is on-going, but i=
t=E2=80=99s important enough to share what we now know. 

 


Lancair (N619SJ) owner Bob Rickard called last week to advise that he=E2=
=80=99d discovered a major crack in his crankshaft at the propeller flange a=
nd wanted to alert other owners flying the above engine/prop combination of h=
is problem. 


 


Bob has been chasing a random vibration in his airframe since he bought t=
he aircraft three years/approximately 500 hours ago. The =E2=80=9Cstandard s=
uspects=E2=80=9D of prop balance/run-out, engine mount/isolators, engine con=
tact with the cowling, etc. had been systematically ruled out over time. In f=
rustration, and unwilling to just ignore it, Bob ordered a new MT 4-blade to=
 replace the Hartzell, remaining very uncomfor=
table with the vibration and unable to think of any other possible fixes. Pa=
rt of Bob=E2=80=99s discomfort was based on the fact that he=E2=80=99d talke=
d extensively to Ed Smith who had similar vibration issues with the same eng=
ine/propeller combination. (Ed=E2=80=99s N9JE experienced an in-flight crank=
shaft failure/departure of the prop in 2010; Ed successfully dead-sticked the airplane onto a beach.)

 


Bob=E2=80=99s recent discovery of the cracked crankshaft was made when t=
he Hartzell was removed for replacement with a=
 new MT prop. At the time of removal/discovery, the engine had just more tha=
n 100 flight hours since major overhaul. The crankshaft had been checked for=
 cracks at overhaul, and the actual eddy current test results were still ava=
ilable showing no cracks or irregularities at that time. Bob believes that t=
he crack developed within the last 100 flight hours as a result of long-term=
 exposure to harmonic vibration, and that this vibration could be a result o=
f an incompatibility between his big-bore Continental and this specific Hartzell prop. He notes that although this is an =E2=
=80=9CFAA approved=E2=80=9D engine/propeller combination, he has talked to o=
ther airplane owners flying this combination who have/are experiencing simil=
ar vibration issues. 


 


We understand that Continental and the FAA have been notified of this pr=
oblem, but we have no additional information at this time. LOBO expects to p=
ublish a more detailed report on this in the next monthly newsletter, but bo=
th Ed Smith and Bob Rickard felt this discovery was worth making immediate n=
otification about. Specifically, any unusual or new engine vibration should b=
e cause for immediate attention. Bob considers himself very lucky to have ca=
ught the crack before in-flight failure. 


 


We=E2=80=99ll devote a few minutes to share what we know/answer question=
s at our LOBO Safety Forum to be held at 1300 in Forum Pavilion 2, Monday, 2=
9 August, at AirVenture. Bob Rickard won=E2=80=
=99t be available to discuss this at our safety forum, but you can email him=
 at r.rickard@rcginc-us.com. L=
OBO would also appreciate an email or call (rpastusek@htii.com 757-286-4802) if you are experiencing similar p=
roblems.


 


Thanks,


Bob Pastusek


For LOBO

<RCG Logo for Email.jpg>

Bob Rickard
President, Rickard Co= nsulting Group, Inc.


<= /span>


= --Apple-Mail-D5ACCC1D-FD6E-41FA-867D-7F0108ACC604--