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Sting Sport Woodcomp blade loss

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  • Brian
    Well, it s not everyday I have something of significance to contribute to this site beyond the snarky remarks - but today I have something of interest! For a
    Message 1 of 37 , Sep 3, 2012
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      Well, it's not everyday I have something of significance to contribute to this site beyond the snarky remarks - but today I have something of interest!


      I guess if you're going to bring someone along when you are going to have a catastrophic failure of your prop blades, a DPE is as good as the next guy huh?

      So near as I can tell - and along with the partner in the plane who is also an A&P, the initial prop blade loss completely evacuated the mount.  The screws and bolts are still in the mount.  When the first blade left the mount, it must've collided with the second blade, causing the shearing and loss.

      I knew doing a power-off/engine loss was going to be part of my day, but I really thought it was going to be simulated rather than an actual.  

      The FAA and NTSB are involved with the incident, so I'm sure there will be an issuance of a report.

      There are apparently reports on the interwebs about other Woodcomps being thrown, but I suppose the same type of scenario could happen on any prop type huh?
    • apollonorthamerica
      No problem. I am also sorry that at some point in some exchange of words elsewhere, I said something that has obviously stuck with you as a negative as was
      Message 37 of 37 , Sep 12, 2012
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        No problem. I am also sorry that at some point in some exchange of words elsewhere, I said something that has obviously stuck with you as a negative as was apparent from your post. probably was not intended.
        Fly Safe and I would recommend changing the prop brand if your manufacturer would approve that. They may have tested other props on the same model and approved them.
        Abid

        --- In Sport_Aircraft@yahoogroups.com, Frank <frankiebpr@...> wrote:
        >
        > My bad. Sorry for the misunderstanding.....
        >
        > Frank
        >
        > Sent from my iPad
        >
        > On Sep 11, 2012, at 10:20 PM, "apollonorthamerica" <apollonorthamerica@...> wrote:
        >
        > > Hi Frank,
        > > I am sorry but I talk to a lot of folks and probably answer 3 dozen e-mails a day. You may remember the exchange with me but I don't have any idea which one of the thousands I have a year that one may be.
        > >
        > > You have completely and utterly misunderstood my comments.
        > > "You got a dooser" (not you were a dooser) was for the problem part you got in question i.e., the woodcomp prop on your particular airplane.
        > >
        > > And yes you are supposed to swallow that because you completely came up with something totally different in your mind that wasn't even written as such.
        > > Thanks
        > > Abid
        > >
        > > --- In Sport_Aircraft@yahoogroups.com, Frank <frankiebpr@> wrote:
        > > >
        > > > This is not the first exchange of words I have had with you. If you hit below the belt then
        > > > you should not be surprised if you get an equal reply. In your response you
        > > > wrote that I was a dooser to the group. Am I supposed to swallow this......? Hence my
        > > > reply.
        > > >
        > > > If you read my first reply carefully you will notice that what I stated to Ed was
        > > > that "I guess the more reason I have been inclined in moving to fuel injection and solid wood
        > > > prop" My comment was aimed at eliminating the carbs for fixed fuel injection; and the solid wood prop aimed at eliminating the possibility of having a composite hollow blade prop
        > > > shooting out of the hub.
        > > >
        > > > My recommendation to you is that you interpret the message before shooting from the hip.
        > > >
        > > > Don't throw rocks in you glass house!
        > > >
        > > > No harm done!
        > > >
        > > > Regardless, I still wish you Calm winds and Blue Skies.
        > > >
        > > > Frank
        > > >
        > > >
        > > > Sent from my iPad
        > > >
        > > > On Sep 10, 2012, at 1:03 AM, "apollonorthamerica" <apollonorthamerica@> wrote:
        > > >
        > > > > And what is that supposed to mean?
        > > > > The fact that you are thinking that somehow this had possibly something to do with a carb engine and some composite prop ... well I just tried to tell you, that's the wrong direction you are headed in. All Rotax engine for aircraft short of new iS have been carb equipped and have many hours on them and most have run composite props. That's all I wanted to clarify to you. Take it or leave it but keep the below the belt jabs to yourself. Thank you.
        > > > > Abid
        > > > >
        > > > > --- In Sport_Aircraft@yahoogroups.com, Frank <frankiebpr@> wrote:
        > > > > >
        > > > > > I guess we always have to have that last commenter in the group!
        > > > > >
        > > > > > Sent from my iPad
        > > > > >
        > > > > > On Sep 8, 2012, at 12:50 AM, "apollonorthamerica" <apollonorthamerica@> wrote:
        > > > > >
        > > > > > > I don't think fuel injection and solid wood has anything to do with it. You got a dooser.
        > > > > > > Abid
        > > > > > >
        > > > > > > --- In Sport_Aircraft@yahoogroups.com, Frank <frankiebpr@> wrote:
        > > > > > > >
        > > > > > > > Thanks, Ed. I guess the more reason I have been inclined in moving to Fuel Injection and
        > > > > > > > solid wood prop.
        > > > > > > >
        > > > > > > > Sent from my iPad
        > > > > > > >
        > > > > > > > On Sep 7, 2012, at 12:55 AM, "pwrsport@" <pwrsport@> wrote:
        > > > > > > >
        > > > > > > > > Rotax 912 80 hp. The engine was running perfectly, nice and smooth up until event.
        > > > > > > > >
        > > > > > > > > Ed
        > > > > > > > >
        > > > > > > > > -----Original Message-----
        > > > > > > > > From: Frank
        > > > > > > > > Sent: Sep 6, 2012 12:27 PM
        > > > > > > > > To: "Sport_Aircraft@yahoogroups.com"
        > > > > > > > > Subject: Re: Light-Sport Aircraft Yahoo group Re: Sting Sport Woodcomp blade loss
        > > > > > > > >
        > > > > > > > >
        > > > > > > > > What engine were you using?
        > > > > > > > >
        > > > > > > > > Thanks
        > > > > > > > >
        > > > > > > > > Frank
        > > > > > > > >
        > > > > > > > > Sent from my iPad
        > > > > > > > >
        > > > > > > > > On Sep 6, 2012, at 2:37 AM, "pwrsport@" <pwrsport@> wrote:
        > > > > > > > >
        > > > > > > > >>
        > > > > > > > >> I had the same situation a couple of years back flying a Rans S12xl. Composite hollow blade sheared at the hub. Never found the blade, went into orbit? There was no warning. In an instant, a loud bang followed by a one tremendous shutter, then total quietness, except for cockpit chatter that starts with “what-the-hell was that”, as you have no idea what happen because the engine is in back. After gliding to a non-event field landing found both carbs were out of their sockets from the initial shock; that stopped the engine. Other than that, no other damage. It is a very, very fast experience.
        > > > > > > > >>
        > > > > > > > >>
        > > > > > > > >>
        > > > > > > > >> Ed
        > > > > > > > >>
        > > > > > > > >>
        > > > > > > > >> -----Original Message-----
        > > > > > > > >> From: Brian
        > > > > > > > >> Sent: Sep 5, 2012 10:41 PM
        > > > > > > > >> To: Sport_Aircraft@yahoogroups.com
        > > > > > > > >> Subject: Light-Sport Aircraft Yahoo group Re: Sting Sport Woodcomp blade loss
        > > > > > > > >>
        > > > > > > > >>
        > > > > > > > >> Oh yeah the whole front end of the plane was vibrating rather violently - but the whole process lasted maybe 2 to 3 seconds before it was all over. I had enough time to pull back on the throttle and level out (quickly mind you) to at least try to see what was going on - but by the time I reached a level attitude the engine had quit.
        > > > > > > > >>
        > > > > > > > >> I haven't seen the plane since we've moved it, but from my understanding from one of the plane partners (who is also an A&P) the carbs shook loose from the rubber mounts - and that's what probably led to the engine quitting.
        > > > > > > > >>
        > > > > > > > >> I also would imagine if the engine would continue to run it could certainly vibrate off the plane. As it stands now the engine mount is bent and the firewall has a crack at one of the mount points. I'll get up to the airport and see it in person on Sunday. Right now I'm working off of reports from other partners in the plane who have seen it first hand.
        > > > > > > > >>
        > > > > > > > >> The FAA was out today and the insurance adjustor should be out soon.
        > > > > > > > >>
        > > > > > > > >> Brian
        > > > > > > > >>
        > > > > > > > >> --- In Sport_Aircraft@yahoogroups.com, "circicirci" <acensor@> wrote:
        > > > > > > > >> >
        > > > > > > > >> > Really glad to hear the report in this form rather than the "error chain that lead to fatality" type.
        > > > > > > > >> >
        > > > > > > > >> > Couple of thoughts and questions:
        > > > > > > > >> >
        > > > > > > > >> > I was pleasantly surprised to see a news report of an incident (any incident really, but particularly for one about an aviation crash) that that was straight forward, reasonably factual, resonably complete, and not meadering off into often baseless speculation and hyperbole. Some local reporter/writer deserves at least a small pat on the back IMO.
        > > > > > > > >> >
        > > > > > > > >> > Yeah, any kind of prop can fail. I suspect that failure of carbon composites are fewer, but have NO stats to support that suspicion.
        > > > > > > > >> >
        > > > > > > > >> > I'm curious: When the prop threw its two blades (appears to be the case from your description and the photo with the article) didn't the engine start vibrating/shaking horribly immeadiatly from the one unbalance blade on the hub?
        > > > > > > > >> > I would think in some cases such a configuration/situation the unbalance might be able to even rip the motor right off its mounts leaving the pilot with a plane so badly out of balance as to be uncontrollable?
        > > > > > > > >> >
        > > > > > > > >> > Alex
        > > > > > > > >> >
        > > > > > > > >> > --- In Sport_Aircraft@yahoogroups.com, "Brian" <brian@> wrote IN PART:
        > > > > > > > >> > >
        > > > > > > > >> > > ...... today I have something of interest!
        > > > > > > > >> > > For a good brief "newsy" overview - the news report -
        > > > > > > > >> > > http://www.timescall.com/news/longmont-local-news/ci_21450136/longmont-e\
        > > > > > > > >> > > mergency-crews-investigate-report-plane-down
        > > > > > > > >> > > <http://www.timescall.com/news/longmont-local-news/ci_21450136/longmont-\
        > > > > > > > >> > > emergency-crews-investigate-report-plane-down>
        > > > > > > > >> > >
        > > > > > > > >> > >....a catastrophic failure of prop blades,
        > > > > > > > >> > >......the initial prop blade loss completely evacuated the mount.
        > > > > > > > >> > > The screws and bolts are still in the mount. When the first blade left the mount, it must've collided with the second blade, causing the
        > > > > > > > >> > > shearing and loss.
        > > > > > > > >> > > I knew doing a power-off/engine loss was going to be part of my day, but I really thought it was going to be simulated rather than an actual.
        > > > > > > > >> >
        > > > > > > > >> > >.... I suppose the same type of scenario could happen on
        > > > > > > > >> > > any prop type huh?
        > > > > > > > >> >
        > > > > > > > >>
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