De-icing boot sealant [ around the edges ]

[b1ngnx33]

Only around the edges.

I currently am using rubber deicing cement. Its black, gooey, has a lot of organic vapours, has a LARGE brush on it that

your supposedly able to do "pin point" accuracy with, etc.

Some people use PRC compounds. But I don't have digital scale to measure that out correctly, not yet.

What do you use?

I find the rubber deicing cement sucks. After a couple "flights", or during the next inspection, the rubber glue is

peeling off. What's the point if it comes off that easily?

Oh, this is way off topic.

Has anyone made an electric deicing boot that doesn't require maintenance?

Those deicing wires in car windows are a blast. Turn it on, and VOILA! Ice melts.

I don't think the concept of an electirc deicing boot is too far off.

Maybe I'm just showing off my ignorance. But I'm too lazy too google electric deicing boots.

No really.

[bombardierfixer]

Possibly a stupid question, but you mask off the area before you apply the selant? And PRC is a 1 to 1 mix or at least the Desoto (thats who makes it right) stuff that I'm familiar with, so measuring it out can sometimes lead to a improper mix. The black gooey stuff is just for static build up isn't it. Get bleed air anti ice then all you have to do is pollish them.

[hangarline]

For around the edges, a conductive cement is usually required. I think BF Goodrich sells it, not sure of the part #.

[Bulawrench]

When i first started in aviation i was told to go to the scuba shop and get wet suit glue.
We were repainting aircraft and we had used that gooey stuff for the edge.
I am sure it isn't the right stuff but bf good rich make the boots and should be able to point
you in the right direction...

[Canook]

PRC 1422 + masking tape + a small squeegee or other spreading tool

1422 is mixed 13:100 but you can eye ball it to about 10:1 pretty easy. Make sure all surfaces to be sealed are grease free and clean. Mask around edges of boot so sealant overlaps boot about a 1/4" and runs onto wing about a 1/4" inch also. Depends how thick the edge of the boot is. You might have to go a bit wider. Mix PRC and apply a nice even layer. Spread smooth with squeegee so you can almost see the edges of your masking tape. (Don't go too thin) Peel off tape by pulling it back over itself to make a nice smooth edge. Leave it overnight or park the plane out in the sun, and voila!

Try Aviall for either pint cans or Sem-kits of PRC. Semkits will take the worry about mixing properly as well, and you can just squirt it out of the tube.

[b1ngnx33]

Thank you.

[snoman]

Spray on soapy water after you squeegy the PRC, but before you take off the masking, then with your finger, you can smooth it out perfectly (have some nitrile gloves on though). Then after you pull off the masking tape, you can go around and pat down the edges that pull up with your finger tip and soapy water again. Even when it's a bit thicker, you can move the PRC around without getting your finger clogged up with the PRC. The soap will just dry up, and will wash off after the PRC is cured (when you give the plane a bath or when it rains).

[Pratt Punk]

Goodrich Deicer Installation and Maintenance manual will provide you with what you need to know and the correct consummables to use! They will refer to it as a edge filler. Don't forget to apply the conductive cement. This will help prevent static buildup on the leading edges that contribute to pinhole damage to deicers.

This manual is available online at Goodrich website.

[HS-748 2A]

Automotive Windshield Eurethane, "Dow Automotive BETASEAL™ U-418", works very well. Mask like anything else. Spit on your finger to spread it. Dries quick and its tough. No mixing required. Keep some laquer thinner and lots of rags handy to wipe up the mess. Its messy.

[roscoe]

Regarding the comment re electric airframe deice "boots"; Some years back I was involved with an aircraft affectionally known as "The Screaming Wheelbarrow" aka HS Argosy. It used WF AC to deice the tail group, as well as props etc. The airframe part of the system was called 'Spraymat", and worked pretty well. As far as no maintenance, that is wishful thinking. any impact on the "boot" has the potential to damage the conductors. The good folks at Spraymat produced a handy feild repair kit for just those events.
Stay tuned, as I beleive that the B787 will feature electric airframe deice.

[HS-748 2A]

Regarding the comment re electric airframe deice "boots"; Some years back I was involved with an aircraft affectionally known as "The Screaming Wheelbarrow" aka HS Argosy. It used WF AC to deice the tail group, as well as props etc. The airframe part of the system was called 'Spraymat", and worked pretty well. As far as no maintenance, that is wishful thinking. any impact on the "boot" has the potential to damage the conductors. The good folks at Spraymat produced a handy feild repair kit for just those events.
Stay tuned, as I beleive that the B787 will feature electric airframe deice.

Ah, you're an old Transair guy, Roscoe?

That must have been a neat machine.

"If it aint broke'; It's not Brittish."
- '48 2A

[roscoe]

Guilty as charged, but, for the record, I was an old MidWest guy before that. Spent loads of time wrenching your avatar. Brought MAK home from Blighty. They sure are nice with 20 hours on them.

[HS-748 2A]

Were you the guy that brought MAk home off the ice after the W/M tanks were filled with JP-4, as I think the story goes?

[roscoe]

No, I was not part of that operation. If I remember right, It was an insurance job, and Field Aviation from YYC was involved

[HS-748 2A]

Where's MAK now? I heard cut up in a barn.

48

[brownbear]

what does your maintenance manual ask for?

PRC is not conductive so it may want to be covered with conductive cement after.

In case of some dash 8 leading edges they get sprayed with anti static coating after(not the boot just a half inch or so of rubber).

Important is to take time on the edges getting them really stuck down, otherwise the edge seal will always fail.