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02-09-2016, 10:22 AM
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Join Date: May 2014
Location: KBVY Massachusetts
Posts: 1,092
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Elevator Horn inspection plate - can it be plastic?
One of the pre-flight points I've always been able to do, in the past, is visually check the connection between the elevator pushrod and the elevator horn to be sure it's secure.
On my RV-8, that is not possible.
I was wondering if the inspection plates under the horizontal stab are structural items. The idea would be to replace one of them with clear plastic so that I can see the connection inside.
But I wouldn't want to do that if the inspection plates are structurally important.
Does anyone know?
Thanks!
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Flying RV-8 N880BC
2019 Dues - happily paid.
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02-09-2016, 10:26 AM
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Join Date: Oct 2012
Location: Clearwater, FL KCLW
Posts: 1,281
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I have heard of several people that have done this, shouldn't be an issue at all.
Chris
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Chris Johnson
RV-9A - Done(ish) 4/5/16! Flying 4/7/16
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02-09-2016, 10:31 AM
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Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,587
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I don't believe these are structural.
Recommend you verify that whatever material you use can't somehow break apart and end up jamming the elevator.
Carl
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02-09-2016, 11:08 AM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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It is true there are RV's flying with it done, but I wouldn't. Particularly on a tail dragger.
They are somewhat structural. To what degree is unknown because no testing has ever been done.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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02-09-2016, 11:42 AM
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Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,029
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I've seen some airplanes with small inspection windows on those panels.
Personally, at locations where I won't be able to visually inspect the bolt/linkage during preflight (e.g. wing bellcrank, control sticks, etc), I'm planning to use self-locking castellated nuts and a cotter pin.
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RV-7ER - finishing kit and systems installation
There are two kinds of fool in the world. The first says "this is old, and therefore good"; the second says "this is new, and therefore better".
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02-09-2016, 11:55 AM
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Join Date: Aug 2009
Location: Southern California
Posts: 877
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Elevator pushrod attachment
Quote:
Originally Posted by Saville
One of the pre-flight points I've always been able to do, in the past, is visually check the connection between the elevator pushrod and the elevator horn to be sure it's secure.
On my RV-8, that is not possible.
I was wondering if the inspection plates under the horizontal stab are structural items. The idea would be to replace one of them with clear plastic so that I can see the connection inside.
But I wouldn't want to do that if the inspection plates are structurally important.
Does anyone know?
Thanks!
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It's pretty easy to check the elevator push-rod bolt for secureness by gently wiggling the elevator trailing edges in opposite directions during preflight. If the bolt is loose, there will be slop and play evident between the two elevators.
Skylor |
02-09-2016, 12:10 PM
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Join Date: Jan 2007
Location: Daleville, AL
Posts: 343
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clear plastic
I've had my elevator horn inspection plate in plastic for about 5 years with my RV-4 so I don't have to remove the plate when the aircraft is inspected at aerobatic contests. Things can get back there.
Bill McLean
RV-4 Slider
lower Alabama
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02-09-2016, 12:55 PM
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Join Date: Jan 2005
Posts: 833
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No
An inspection plate is never structural. Go for it
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Cold Lake, Alberta
7A #70015 - C-FZQX - built - sold
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02-09-2016, 01:03 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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Quote:
Originally Posted by sjhurlbut
An inspection plate is never structural. Go for it
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Really?
Then why isn't the inspection covers on the bottom of the wings on RV's only installed with 6 screws?
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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02-09-2016, 03:21 PM
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Join Date: May 2006
Location: Houston
Posts: 2,010
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Quote:
Originally Posted by sjhurlbut
An inspection plate is never structural. Go for it
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Second. Under wing one's are structural. Confirmed it many years back with the factory. Edit - Maybe with the guy who just posted before me....
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Bryan
Houston
Last edited by Low Pass : 02-09-2016 at 03:29 PM.
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