I wonder about the integrity of the elevator mass balance in the accident
aircraft. If the
mass balance had become disengaged for any reason, then the slightest distu
rbance in pitch
could cause the elevator to become uncontrollable. This would be consisten
t with the report
of wild pitch excursions initially prior to the tail departing.
Glenn> From: willie.harrison@tiny
online.co.uk> Subject: Re: Europa-List: Europa Tailplane - Mod 73> Date: Sa
List message posted by: William Harrison <willie.harrison@tinyonline.co.uk>
> > I have heard that there are still doubts in the AAIB investigation > ab
out whether the initial failure was the wing pin (with > consequential fail
ure of the tail) or the other way around. Hence we > are being required to
cover both hypotheses by mods and checks front > and back.> > If it was ind
eed the wing pin which failed first - very big "if" - > then the implicatio
n is that the tail could/would have then failed > because it was subject to
loads it had never been designed for > (perhaps a sudden pitch or roll or
yaw?) , and not because there was > anything wrong with it - it would have
been a consequential event, > not a causal one. You might also feel that if
the wing pin had failed > then the aircraft may have been doomed whether o
r not the tail broke > up. If this is true then perhaps neither mod 73 nor
Nigel's mod > would have saved the day.> > A supporting thought to this hyp
othesis is that the build quality > around the wing pin on the crash aircra
ft is known to have been poor. > Also, the aircraft is known to have been r
eturning from a Permit > inspection when the wings would have been removed
and replaced. > Perhaps in refitting the wing, some damage was done to the
already > compromised wing pin?> > Just a thought.> > Willie Harrison> > >
> On 14 Jul 2007, at 15:05, Carl Pattinson wrote:> > > --> Europa-List mess
age posted by: "Carl Pattinson" > > <carl@flyers.freeserve.co.uk>> >> > Im
not sure your mod would have prevented Williams accident.> >> > I believe h
is kit would have been purchased in 1994 and was > > finished in 1995.> >>
>> > ----- Original Message ----- From: "Nigel Graham" > > <nigel_graham@bt
connect.com>> > To: <europa-list@matronics.com>> > Sent: Saturday, July 14,
2007 1:59 PM> > Subject: RE: Europa-List: Europa Tailplane - Mod 73> >> >>
connect.com>> >>> >> Hartstikke bedankt heren, tot u dienst.> >>> >> What r
eally saddens me is that I wrote to Europa Aviation in the > >> late '90s>
>> highlighting the potential problem with the tailplane and > >> proposing
that the> >> tailplane mod be adopted as the standard build procedure. It
would > >> have cost> >> nothing - no extra parts, just a change to build i
nstructions the > >> manual.> >> In my mail to them, I even predicted a seq
uence of events that > >> could lead to> >> a tailplane becoming detached a
nd the resulting in-flight break-up > >> of the> >> aircraft.> >> No intere
st was shown whatsoever and I never heard back from them.> >> When I learne
d of the in-flight break-up of William's plane, I had a> >> sickening feeli
ng that I knew what might have happened. The full > >> AAIB report> >> will
confirm (or otherwise) if I was correct but the fact that the> >> authorit
ies are looking closely at this component leads me to > >> believe I'm on>
>> the money.> >>> >> m.v.g.> >>> >> Nigel> >>> >> -----Original Message---
--> >> From: owner-europa-list-server@matronics.com> >> [mailto:owner-europ
a-list-server@matronics.com]On Behalf Of Jan de > >> Jong> >> Sent: 14 July
2007 12:46> >> To: europa-list@matronics.com> >> Subject: Re: Europa-List:
an de Jong > >> <jan.de.jong@xs4all.nl>> >>> >> I am glad to second that. T
hank you very much indeed!> >> Regards,> >> Jan de Jong> >>> >> josok wrote
>>> Hi Nigel,> >>> It's a seldom opportonity to be able to thank the right
person > >>> for a great> >> idea! So: Thanks, ever so happy that i don't h
ave to worry about > >> loose> >> bushes!> >>> :-)> >>>> >>> Regards,> >>>>
>>> Jos Okhuijsen> >>>> >>>> >>>> >>>> >>>> >>>> >>> Visit - www.EuropaOwn
ers.org> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>>
=====> > >
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