SB 14-01-31; RV-6, 7, 8

[az_gila]

Originally Posted by Ironflight

Do we even dare ask what that might be?!

This one works well, but if you get a drop in your skin, it burns...

http://www.aircraftspruce.com/catalo.../ptipaintr.php

[KleensRV6]

1995 RV 6
1010 Hrs TT
IO-360-A1A converted to a single Slick mag and a ElectroAir ignition.
Hartzell CS
98% paved stripes
Very Light + G's acro (no spins)
1 crack on the left side

[LettersFromFlyoverCountry]

Just via anecdotal evidence, I'm intrigued by the number of no cracks/no notches conclusions. Do we have that broken down further yet?

[kiwipete]

Rv-7 2007
350 hours
Superior IO-360
Hartzell Blended Aerofoil
Notches well radiused
Lives on grass which can be quite bumpy
Occasional aero's +G normally no more than 4
spun a couple of times per year.
No cracks

However I have had engine mount cracks on the gear legs as per most of the UK fleet that operate off grass.

[Bavafa]

Originally Posted by LettersFromFlyoverCountry

Just via anecdotal evidence, I'm intrigued by the number of no cracks/no notches conclusions. Do we have that broken down further yet?

The idea of ?notches? might be a bit subjective here. I have seen some of the pix posted here that they say notched and to my eye and based on the pix provided, it look hardly any notches there.

Here is one with a clear notch


HS3 by bavafa1, on Flickr

[Low Pass]

Originally Posted by Bavafa

The idea of ?notches? might be a bit subjective here. I have seen some of the pix posted here that they say notched and to my eye and based on the pix provided, it look hardly any notches there.

Here is one with a clear notch


HS3 by bavafa1, on Flickr

Interesting about the position of this "notch". How would one see any potential cracking behind that rib flange? Tough dilemma.

[jbDC9]

Originally Posted by Low Pass

Interesting about the position of this "notch". How would one see any potential cracking behind that rib flange? Tough dilemma.

That was my exact thought when I saw that pic; the rib flange covers where the crack is in most of the other crack pics.

BTW, love the new avatar pic...
"Well, I've been to one world fair, a picnic, and a rodeo, and that's the stupidest thing I ever heard come over a set of earphones. You sure you got today's codes?"

[glider4]

RV-8A N880AT inspected today for both SBs. Time to remove H/S+V/S fairing, inspect and re-install fairing was 1.4 hours. No cracking found in any of the locations specified by the two SBs.

My RV-8A has 10.3 hours airtime and has a IO-360 with a FPP. I fly off paved runways at S03 (Ashland, OR).

I do have a "new" never installed H/S and right elevator available. These were built 10 years ago but never used. No cracks in these! I acquired them at an estate sale back in mid-2004. Worksmanship on these is about a B- or so. Will sell for cost of materials if anyone out there needs a H/S or right elevator quick. $400 for the H/S and $200 for the right elevator. Local pick up in Ashland, OR area or can deliver up to 400 miles round trip for gas $s. These are way too expensive to ship!

Albert Thomas
303-241-0789

[Bavafa]

Originally Posted by Low Pass

Interesting about the position of this "notch". How would one see any potential cracking behind that rib flange? Tough dilemma.

Very good point has been brought up. I have pictures of both side and only one side is being covered like this. I will make an attempt of trying to bend the rib flange and check for crack. I am also contemplating of doing the SB regardless for a piece of mind.

[Gonzo24]

I called Van's and spoke with Bruce on the Parts order line. Said I wanted to order all HS parts and SB kit except the rear spar components (I intend to re-use my rear spar in the new assembly as I have elected to rebuild the HS while it's in the shop). Was told that he could not take my order since, "The engineers were in a brain trust working it out". I inquired what that meant exactly. Was told that a fix is coming. Asked another question about leadtime...

I thought the SB kit was the fix. I'll wait a few weeks and see what shakes out. Very interesting.... Anyone else run into this?