Graham,
Those of us in the aerospace world have to live with two documents, the FAA
DO-160 and an equivalent mil spec (either 883 or 810). Both have what is
called a fluid susceptibility test section.  Depending on the customer,
there is a wide range of fluids that the material must be resistant to.
Our avionics assemblies can be anywhere in the plane, cockpit, avionics
bay, luggage bay, under the toilets, in the wings, up in the tail, outside
the aircraft.  Can be anywhere.  For hydraulic fluid, yes we are primarily
concerned about drips and leaks from hydraulic lines.  Some customers what
the paints and coatings to be "bulletproof" and know that if a material can
stand up to hydraulic fluid, it will stand up to everything else.


Doug Pauls
Principal Materials and Process Engineer
Rockwell Collins

On Wed, Aug 23, 2017 at 5:44 AM, Graham Naisbitt <
[log in to unmask]> wrote:

> Hi Doug
>
> I recall being asked the question regarding our (then) coatings and their
> ability to resist Skydrol.
>
> When I enquired why, I was informed that the electronic circuits were in
> the cockpit, and they were worried about the effects on them if Skydrol
> were to “leak” onto them.
>
> I had to ask why this would be important given that the pilot had already
> ejected to safety if that happened.
>
> I don’t believe that anyone found a Skydrol resistant paint or coating but
> can’t Eastman help you?
>
> ATB - Graham
>
> > On 21 Aug 2017, at 22:06, Douglas Pauls <[log in to unmask]>
> wrote:
> >
> > Good afternoon all,
> >
> > Do any of you know a good epoxy-based paint that is resistant to
> Skydrol, a
> > nasty phosphate based hydraulic fluid?
> >
> > Doug Pauls
> > Principal Materials and Process Engineer
> > Rockwell Collins
>
>