Steve,
The PFA were made aware of the many builders that have incorporated this
change and they determined that this arrangement did not meet the
requirement to provide a secondary retention for TP6. In fact, this is what
led to the grounding of many UK Europas.
Personnally, I think the very quick issue of Mod 73 was as a result of the
PFA becoming aware of so many non standard pip pin recesses. I think they
were a bit shocked because the build manual is quite clear in saying that
changes to the recess requires PFA mod approval (in the UK). Mod 73 may not
be elegant but it does create a known build standard across the fleet and
removes the need to tear out the many non standard arrangements (for UK
owners).
In case you think I am sounding rather "holier than thou"" over this - I
was also grounded because of non standard pip pin recesses.
Brian Davies
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Steve Hagar
Sent: 21 July 2007 06:13
Subject: Europa-List: Mod 73 Fray
I have been keeping out of the fray as I did not want to add to the 30 or so
E mails every night. This doesn't apply to the European types as they must
pay homage to the PFA. I am surprised to note that no one has mentioned a
modification that was detailed in what I believe was sent in to the Europa
Newsletter when it was being published years ago. I had done this to my
tail planes and it appears to be pretty robust and not dependent on the TP6
debonding to keep the integrity of mating of the drive pins at the tail
plane root. The deviation involved making a receptacle in the top of the
tailplane out of an internally threaded PVC pipe stub. Mine has about an
inch and a half inside diameter. This is positioned so that the pip pin is
almost touching the inboard periphery of the ID. Debonding of TP6 would
result in the pin acting in shear against the inside of the receptacle,
holding the tailplane in place. I turned the OD of the unit a little over
2" before I bonded down into the meaty thickness of the upper tailplane. A
plug was turned to thread into the cavity top so this holds the pip pin in
weather the balls are sprung or not. I don't have alot of hours on the
aircraft yet for a history however it has been rigged and derigged at least
75~100 times. I have had the TP5's come loose and have done work on them.
These are exposed to greater stress as when you put the planes on and they
are not exactly level you invariably have some levering action going on
until you get things started and pushed in.
Just My 2 cents
Steve Hagar
A143
Mesa AZ
N40SH
> [Original Message]
> From: josok <josok-e@ukolo.fi>
> To: <europa-list@matronics.com>
> Date: 7/14/2007 11:01:39 AM
> Subject: Re: Europa-List: Europa Tailplane - Mod 73
>
>
> Hi Richsrd,
>
>
http://www.europaclub.org.uk/mods/improved_tp5_and_tp6_sleeve_retention.shtm
l
>
> Europa club pages,
>
> Regards,
>
> Jos Okhuijsen
>
>
> Visit - www.EuropaOwners.org
>
>
15:30
15:30
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