The AAIB report is up to their usual high standard. However, the trend l can
see
being analysed is insufficient (or ineffective) aircraft type training and
nothing to do with the nominal design of the Europa. Does it mention
non-compliance
to the design specification?
I don't see an analysis of the recovered door(s) and measurement of the shoot
bolt
length against the design requirement.
10 to 12mm of protruding pin is needed. Is this an inspection item on a Europa
permit inspection or renewal? If not, why not?
I have looked at about a dozen Europa since the UglyMod appeared on the scene.
All have different shoot bolt lengths and tapers. Some are filed to a distinct
point whereas others have a minimal taper and have a generous radius at the
end.
As the operation of the door is linked to the dimensions and shape of the shoot
bolts l would have thought this an obvious place to ensure consistency. Minimum
design spec - shoot bolt extended length and shape being the inspection
criterion.
The LAA Mod may avoid some clumsy mishandling of the doors, but it does not
necessarily
fix the root cause.
Go and measure your shoot bolts.
Now measure the size and shape of the holes in the door surround. These are
nominally
a clearance fit to the shoot bolt diameter. Is the hole clean, would
it benefit from a bush (tube) to ensure a good fit with the (proper length)
shoot
bolt?
Some food for though. Until the next door off event.
--------
John Wighton
Europa XS trigear G-IPOD
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