The simplest fix would appear to be to construct a "standard recess" on the
underside of the stab in place of the drain hole. This would be stronger
than the existing construction and would not run the risk of dislodging TP6
whilst trying to undo an existing (non standard)arrangement on the top.
Brian Davies
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Graham
Singleton
Sent: 20 June 2007 22:43
Subject: Re: Europa-List: RE: EUROPA PIP-PIN RECESS
--> <grahamsingleton@btinternet.com>
Carl
I moght be wrong but I would not have grounded you. The smaller the
circumference the stronger the hole surround?
Graham
Carl Pattinson wrote:
> Well, this really puts the cat amongst the pigeons.
> My pip pin hole is circular as are many (its easier to make a cover
> for them). Since a circular hole is more "efficient" circumference
> wise (as opposed to a rectangle) the circumference of mine aint big
enough.
>
> PFA have advised not to modify them to meet the criteria but to wait
> for the revised design - oh and most importantly "Do not fly the
aircraft".
>
> For those that may have a similar problem the formula is Circumference
> is 3.142 x diameter. Area is 3.142 x radius squared.
>
> Limits are
>
> Base of recess must be more than 170 sq mm Circumference of recess
> must be more than 125mm
>
> Also recess must have at least 2 layers of bid and must have flox
> corners at the join with the tailplane skin.
>
> A one inch (25mm) diameter pip pin recess fails the above criteria -
> Area 490sq mm - Circumference only 78mm.
>
> What a bummer.
>
> ----- Original Message -----
> *From:* Mike Gregory <mailto:m.j.gregory@talk21.com>
> *To:* europa-list@matronics.com <mailto:europa-list@matronics.com>
> *Sent:* Wednesday, June 20, 2007 4:58 PM
> *Subject:* Europa-List: RE: EUROPA PIP-PIN RECESS
>
> *To all Listers*
>
> *Please see the updated safety bulletin on the PFA web site see
> link below.*
>
> *Mike*
>
> *Europa Club Safety Officer*
>
> *EUROPA SAFETY ALERT UPDATE!*
>
> EUROPA SAFETY BULLETIN RAISED TO *ISSUE 2* TO INCLUDE FURTHER
> GUIDANCE ON ACCEPTANCE DESIGNS OF PIP-PIN RECESSES IN TAILPLANES.
>
> Europa Flight Safety Bulletin 006
> <http://www.pfa.org.uk/News%20Update/Europa.pdf>
>
> *
>
> href="http://www.matronics.com/Navigator?Europa-List";>http://www.matro
> nhref="http://forums.matronics.com";>http://forums.matronics.com
>
> *
>
> *
>
>
> *
--
Graham Singleton
Tel: +441629820187
Mob: +447739582005
13:12
13:12
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