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doug kandle
Joined: 09 Jan 2006
Posts: 33
Location: Boise ID
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 Posted: Tue Oct 17, 2006 3:57 pm Post subject: Mounting ELT in 701 |
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I went to mount my ELT in my 701 today and hit a snag. Where do I mount it? The instructions with the ELT say "The mounting surface must be extremely rigid; therefore, mounting the ELT directly to the aircraft skin is unacceptable."
There is no surface in the tail of the 701 large enough to mount the ELT except the skin. Have others added material attached to the longerons and then mounted the ELT to that?
The installation specification states that the center line of the ELT must be mounted within 10 degrees of the direction of flight. Well, the bottom of the tail is slanted up more than 10 degrees so this means that to meet this specification a bracket would need to be made even of I were to attach the ELT to the bottom of the tail.
Do the DAR's look at this; and is meeting RTCA DO-183 paragraph 3.1.8 required?
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lrm(at)skyhawg.com
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| Posted: Tue Oct 17, 2006 7:22 pm Post subject: Mounting ELT in 701 |
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If you will check my site you will find I put an access door in the bottom
near the rear. Then I used two pieces of 3"X1/8" aluminum flat stock to
make a platform from side to side just inside of the door. They are riveted
to the lonerons. There I mounted my ELT. I also ended up having to mount
a battery in the back for CG purposes. I couldn't have installed either one
without the door. Zenith cuts a lot of corners in the name of lightness.
What they don't seem to care about is having to inspect or do maintenance at
some time in the future. It's sorta like building a boat in the basement.
I also believe in inspection plates. My wings came with 12 per wing and I
added four more on top. And, they have doublers. There is almost nothing
on my plane I can't get to. All in all maybe I added 2 pounds but it's
worth it not to have to pull skin off or cut holes at some later date, and
it will happen.
Larry, N1345L, www.skyhawg.com
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cffd(at)pgrb.com
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| Posted: Tue Oct 17, 2006 7:46 pm Post subject: Mounting ELT in 701 |
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Doug,
I put a doubler in the right rear corner of the baggage compartment floor
and mounted the ELT bracket there. Mine has a portable antenna so I wanted
to make it where I could get to it to remove it easily.
Chuck D.
N701TX
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321PT
Joined: 23 May 2006
Posts: 40
Location: Texas
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| Posted: Wed Oct 18, 2006 6:49 am Post subject: Mounting ELT in 701 |
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Mounted mine just behing the right seat to the far right in the baggage compartment. Easy to get to for checking, battery change, etc.
321PT
[quote][b]
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Wed Oct 18, 2006 8:14 am Post subject: Mounting ELT in 701 |
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A Lot of aircraft will have a small tray installed behind the passenger
compartment. This tray is installed such that the ELT will be more or less
level when in flight and the big arrow on the ELT that designates front will
be parallel to the centre line of the aircraft.
If you are using the aircraft on floats or on particularly rough surfaces
you might want to consider a remote arm switch that can be installed in the
instrument panel. It will allow you to turn off the ELT just before landing
in rough areas and causing accidental signals being transmitted.
Noel
[quote] --
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Wed Oct 18, 2006 8:34 am Post subject: Mounting ELT in 701 |
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It's not really recommended to install inspection ports in the top of the
wings. Some times you will see several inspection ports fairly close
together on the bottom of the wings. If a screw on the top of the wing
comes loose then an inspection port can be ripped from the wing (not good)
Inspection ports on the top of any horizontal surface can leak water into
the unit, be it a wing, fuselage or horizontal stabilizer (also not good).
IMHO inspection ports in the sides/bottom of a plane are a good idea if they
don't require the cutting of a structural member and if they do cut a
structural member are properly framed out.
Noel
[quote] --
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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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planejim(at)bellsouth.net
Guest
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| Posted: Wed Oct 18, 2006 11:17 am Post subject: Mounting ELT in 701 |
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I believe ELTs are now required to have a remote switch and indicator light
in a place the pilot can see and reach. I may be wrong about this but I seem
to remember this from some info about ten years ago. Look into it!
Jim Hoak
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amyvega2005(at)earthlink.
Guest
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| Posted: Wed Oct 18, 2006 11:52 am Post subject: Mounting ELT in 701 |
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I have seen them on other zodiacs on the floor or as on the demo model, in the luggage compartment.
I am installing mine and am putting it on the right of the flap motr along the center line.
Juan Vega,Jr.
601 xl builder, Tampa Florida
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