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EdKranz
Joined: 29 Dec 2010
Posts: 132
Location: Hastings, MN
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 Posted: Fri Jan 16, 2015 9:55 am Post subject: "Jesus Bolt" list? |
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Hey Everyone.
I'm getting towards the end of the build, and I've started thinking of the final inspections. Has anyone compiled a list of the so called "Jesus Bolts" that are flight critical single points of failure? Like the nuts and bolts that connect the ball end joints on the elevator pushrods? I was just rereading about the -10 that lost elevator control while landing and smashed up the nose pretty badly... due to either losing or never having a nut on one of these bolts.
It would be great to have a piece of paper to use as a checklist while doing those final inspections before first flight, the extensive inspections during phase 1, and continuing yearly inspections.
If no one has a specific list, I'd be happy to create an online spreadsheet that we all could contribute too.
[quote][b]
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Ed Kranz
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flying-nut(at)cfl.rr.com
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| Posted: Fri Jan 16, 2015 12:38 pm Post subject: "Jesus Bolt" list? |
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You're farther along than I am .... I have another year (been saying that for 4 months now) to build, and can't answer your question. However, in lieu of a 'Jesus bolt list', I've been making sure that every fastener necessary for safe flight has yellow torque seal visible before I close up that area. My 'list' includes nuts/bolts, B nuts, cotter pins and safety wire. The torque seal goes on right after I've tightened the fastener ..... and if the torque seal is missing (because I messed up) the fastener gets re-tightened, not just checked off because 'I know it got tightened'.
Great idea though ..... sorry I can't contribute to a 'list'.
Linn
On 1/16/2015 12:53 PM, Ed Kranz wrote:
[quote] Hey Everyone.
I'm getting towards the end of the build, and I've started thinking of the final inspections. Has anyone compiled a list of the so called "Jesus Bolts" that are flight critical single points of failure? Like the nuts and bolts that connect the ball end joints on the elevator pushrods? I was just rereading about the -10 that lost elevator control while landing and smashed up the nose pretty badly... due to either losing or never having a nut on one of these bolts.
It would be great to have a piece of paper to use as a checklist while doing those final inspections before first flight, the extensive inspections during phase 1, and continuing yearly inspections.
If no one has a specific list, I'd be happy to create an online spreadsheet that we all could contribute too.
No virus found in this message.
Checked by AVG - www.avg.com
01/16/15 [b]
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Fri Jan 16, 2015 7:25 pm Post subject: "Jesus Bolt" list? |
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I think the absolute best way is to host an RVator club meeting and have everyone take a close look. Many eyes are better than a few. Doesn't really matter how far along you are. I hosted at least 2.
Don McDonald
From: Ed Kranz <ed.kranz(at)gmail.com>
To: rv10-list(at)matronics.com
Sent: Friday, January 16, 2015 11:53 AM
Subject: "Jesus Bolt" list?
Hey Everyone.
I'm getting towards the end of the build, and I've started thinking of the final inspections. Has anyone compiled a list of the so called "Jesus Bolts" that are flight critical single points of failure? Like the nuts and bolts that connect the ball end joints on the elevator pushrods? I was just rereading about the -10 that lost elevator control while landing and smashed up the nose pretty badly... due to either losing or never having a nut on one of these bolts.
It would be great to have a piece of paper to use as a checklist while doing those final inspections before first flight, the extensive inspections during phase 1, and continuing yearly inspections.
If no one has a specific list, I'd be happy to create an online spreadsheet that we all could contribute too.
[quote]
://www.aeroelectric.com/">www.aeroelectric.com
ref="http://www.buildersbooks.com/">www.buildersbooks.com
p://www.homebuilthelp.com/">www.homebuilthelp.com
tp://www.mypilotstore.com/">www.mypilotstore.com
ttp://www.mrrace.com/">www.mrrace.com
ronics.com/contribution">http://www.matronics.com/contribution
ronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
matronics.com/">http://forums.matronics.com
[b]
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Don A. McDonald
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Fri Jan 16, 2015 8:41 pm Post subject: "Jesus Bolt" list? |
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You can pretty well imagine the critical ones. All that attach flight
controls and connect the individual pieces. The wing attach bolts. The
vertical and horizontal stab bolts. The engine mounts and mount attach
bolts. All of the gear attach bolts. Axle nuts. Any trim and autopilot
servo attachments.
| Quote: | ------------------------------------------------------------------------
*From:* Ed Kranz <ed.kranz(at)gmail.com>
*To:* rv10-list(at)matronics.com
*Sent:* Friday, January 16, 2015 11:53 AM
*Subject:* "Jesus Bolt" list?
Hey Everyone.
I'm getting towards the end of the build, and I've started thinking of
the final inspections. Has anyone compiled a list of the so called
"Jesus Bolts" that are flight critical single points of failure? Like
the nuts and bolts that connect the ball end joints on the elevator
pushrods? I was just rereading about the -10 that lost elevator
control while landing and smashed up the nose pretty badly... due to
either losing or never having a nut on one of these bolts.
It would be great to have a piece of paper to use as a checklist while
doing those final inspections before first flight, the extensive
inspections during phase 1, and continuing yearly inspections.
If no one has a specific list, I'd be happy to create an online
spreadsheet that we all could contribute too.
*
://www.aeroelectric.com/">www.aeroelectric.com
ref="http://www.buildersbooks.com/">www.buildersbooks.com
p://www.homebuilthelp.com/">www.homebuilthelp.com
tp://www.mypilotstore.com/">www.mypilotstore.com
ttp://www.mrrace.com/">www.mrrace.com
ronics.com/contribution">http://www.matronics.com/contribution
ronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
matronics.com/">http://forums.matronics.com
*
*
*
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Fri Jan 16, 2015 8:53 pm Post subject: "Jesus Bolt" list? |
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Add the throttle, mixture, and prop control attach bolts.
On 1/16/2015 9:37 PM, Kelly McMullen wrote:
| Quote: |
You can pretty well imagine the critical ones. All that attach flight
controls and connect the individual pieces. The wing attach bolts. The
vertical and horizontal stab bolts. The engine mounts and mount attach
bolts. All of the gear attach bolts. Axle nuts. Any trim and autopilot
servo attachments.
> ------------------------------------------------------------------------
> *From:* Ed Kranz <ed.kranz(at)gmail.com>
> *To:* rv10-list(at)matronics.com
> *Sent:* Friday, January 16, 2015 11:53 AM
> *Subject:* "Jesus Bolt" list?
>
> Hey Everyone.
>
> I'm getting towards the end of the build, and I've started thinking
> of the final inspections. Has anyone compiled a list of the so called
> "Jesus Bolts" that are flight critical single points of failure? Like
> the nuts and bolts that connect the ball end joints on the elevator
> pushrods? I was just rereading about the -10 that lost elevator
> control while landing and smashed up the nose pretty badly... due to
> either losing or never having a nut on one of these bolts.
>
> It would be great to have a piece of paper to use as a checklist
> while doing those final inspections before first flight, the
> extensive inspections during phase 1, and continuing yearly inspections.
>
> If no one has a specific list, I'd be happy to create an online
> spreadsheet that we all could contribute too.
> *
>
> ://www.aeroelectric.com/">www.aeroelectric.com
> ref="http://www.buildersbooks.com/">www.buildersbooks.com
> p://www.homebuilthelp.com/">www.homebuilthelp.com
> tp://www.mypilotstore.com/">www.mypilotstore.com
> ttp://www.mrrace.com/">www.mrrace.com
> ronics.com/contribution">http://www.matronics.com/contribution
> ronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>
> matronics.com/">http://forums.matronics.com
>
> *
> *
> *
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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Jim Berry
Joined: 10 Jan 2006
Posts: 237
Location: Denver
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| Posted: Sat Jan 17, 2015 9:37 am Post subject: Re: |
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While I understand that the loss of some bolts can bring you closer to Jesus faster, there are no bolts that I would want to be without. Even if a bolt gone missing does not result in a control or structural failure, it can still jam a control, etc.
Paying special attention to some bolts suggests that you can slack off with others. Check every bolt like your life depends on it. If you could pound 12,000 rivets (just a WAG), surely you can put a wrench on every bolt before you go flying.
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tgmeyerster(at)gmail.com
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| Posted: Mon Jan 19, 2015 6:46 pm Post subject: "Jesus Bolt" list? |
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Which part of the airplane can fall off or come apart during flight? And what can you do to make sure that nothing comes apart or falls off during flight?
On Saturday, January 17, 2015, Jim Berry <tojimberry(at)gmail.com (tojimberry(at)gmail.com)> wrote:
[quote]--> RV10-List message posted by: "Jim Berry" <[url=javascript:;]tojimberry(at)gmail.com[/url]>
While I understand that the loss of some bolts can bring you closer to Jesus faster, there are no bolts that I would want to be without. Even if a bolt gone missing does not result in a control or structural failure, it can still jam a control, etc.
Paying special attention to some bolts suggests that you can slack off with others. Check every bolt like your life depends on it. If you could pound 12,000 rivets (just a WAG), surely you can put a wrench on every bolt before you go flying.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=437141#437141
===========
br> fts!)
r> > com" target="_blank">www.aeroelectric.com
w.buildersbooks.com" target="_blank">www.buildersbooks.com
p.com" target="_blank">www.homebuilthelp.com
e.com" target="_blank">www.mypilotstore.com
" target="_blank">www.mrrace.com
target="_blank">http://www.matronics.com/contribution
-Matt Dralle, List Admin.
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[b]
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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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| Posted: Fri Jan 23, 2015 8:29 am Post subject: Re: |
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Ed
My advice is invite some RV builders and assign each one a system to inspect, like controls. Then have some one inspect sections like one wing.
Mike
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RV-10 builder (flying)
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Jim Berry
Joined: 10 Jan 2006
Posts: 237
Location: Denver
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| Posted: Fri Jan 23, 2015 9:43 am Post subject: Re: |
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| tgmeyerster(at)gmail.com wrote: | Which part of the airplane can fall off or come apart during flight? And what can you do to make sure that nothing comes apart or falls off during flight?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=437141#437141
As I have reported previously, I was shooting practice approaches to minimums when the pinch bolt that holds the fab to the throttle body loosened. This allowed the fab to drop to the bottom of the cowl and slide aft. When I went full throttle at the missed, engine suction pulled the fab up to the throttle body, blanking airflow and killing the engine.
Fortunately we were over the threshold at that point and landed long. If the bolt had let go at most any other time, the outcome may have been different.
Turns out that this has happened to several RVs. My solution was to install a strut brace from the throttle body to the fab.
So, which bolt would you like to do without?
===========
br> fts!)
r> > com" target="_blank">www.aeroelectric.com
w.buildersbooks.com" target="_blank">www.buildersbooks.com
p.com" target="_blank">www.homebuilthelp.com
e.com" target="_blank">www.mypilotstore.com
" target="_blank">www.mrrace.com
target="_blank">http://www.matronics.com/contribution
-Matt Dralle, List Admin.
===========
-List" target="_blank">http://www.matronics.com/Navigator?RV10-List
===========
FORUMS -
_blank">http://forums.matronics.com
===========
[b] |
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