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Surface Cracks

Subject: Surface Cracks
From: Gregory Mike <M.J.Gregory@cranfield.ac.uk>
Date: Fri, 4 Aug 2000 15:47:25
(corrected version) 
> Surface cracks have been found on 2 Europas, each side of the fuselage,
> spreading a short distance upwards from a point directly above the main
> wing spars . There are corresponding cracks on the wing fillet fairings.
> There is no immediate cause for alarm, but it would be helpful to know
> whether there are other examples in the fleet. This would show if further
> investigation is needed, so that proper advice could be given as to any
> necessary preventative or remedial action.
> 
> If you have experienced such cracks, please would you advise John Tempest
> of PFA Engineering <john_tempest@pfa.org.uk >
> of the following:
>         1. Registration and approx hours flown.
>         2. Length of fuselage cracks, measured from top of spar slots.
>         3. Depth of cracks, if deeper than surface paint/filler.
>         4. Whether there are corresponding cracks in the wing fillet
> fairings.
> 
> I emphasise that this is solely for us to understand whether there is a
> general symptom, which may be purely the result of the fuselage flexing in
> service, without any structural integrity implications. No action other
> than reporting is being called for, and I would like to remind anyone
> building a Europa that they should not rush into any home-grown
> modification such as local reinforcement of the structure: previous
> experience suggests that, if any change at all is needed, it will be as a
> result of a careful structural analysis to avoid causing problems
> elsewhere.
> 
> Fly safely
> 
> Mike
> Europa Club Safety Officer
> 
> 


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