It is not a difficult project to simply replace the lateral nutplates
with Southco or CamLok quarter turn fasteners. The only minor issue
is that the rivet holes for the nutplates do not fit the new fasteners.
I think the best solution is to fill the old holes and back them with a
long horizontal strip of glass, then back the glass with a long strip
of say 40 thou 6061 an inch high to hold the new rivets.
The nut plates on the fire wall can stay behind, just replacing the lateral
cowl screws cuts the job by more than 2/3.
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Ira N224XS
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