SB111 importance

Service and maintenance tips, questions, and issues.

Moderator: Paul Sehorne

Post Reply
Randy Strock
Posts: 20
Joined: Sun Oct 11, 2009 12:52 pm

SB111 importance

Post by Randy Strock »

Brantly Blade Crack 2 low resolution for posting.jpg
Brantly Blade Crack 2 low resolution for posting.jpg (44.22 KiB) Viewed 3286 times
Brantly Blade Crack 1 low resolution for posting.jpg
Brantly Blade Crack 1 low resolution for posting.jpg (44.34 KiB) Viewed 3276 times
Here are pics of the results of my following the 10x lens inspection requirement and subsequently stripping off the paint for further investigation after the lens inspection showed cracks that i couldn't see with the naked eye. While failure wasn't absolutely imminent, it was on its way. The crack line follows the pattern that caused the SB to be issued. It went between 9 rivets. I am VERY glad that the SB was issued and that I did not ignore it. To those of you who have a different opinion than mine regarding the SB, I say set aside those opinions momentarily and perform the inspection. If you don't find anything wrong, then by all means maintain your original opinion. If you do find something wrong, as I did, then you can be thankful that you didn't fall out of the sky.

While there are certainly valid discussions to be had regarding the future of the fallout from this SB, I encourage each and every one of you to get hold of a 10x magnifying lens and AT LEAST perform the visual inspection looking for cracks. $77.00 at McMaster Carr, N. J. very cheap life insurance.

I now have to find and buy a blade and while that isn't pleasant financially, I'm glad that I do. I would not have enjoyed the results of my ignoring that SB.
seneca2e
Posts: 395
Joined: Mon Feb 11, 2008 10:35 pm

Re: SB111 importance

Post by seneca2e »

You didn't need that service bulletin to find those cracks! That's the whole problem with aviation maintenance these days. They've tried to inspect via A/D notes(the final form of many service bulletins which often get issued for liability concerns). Also there is a HUGE probability that the blade you find/buy will have been reskinned. Unfortunately the service bulletin specifically nixes those and while Birdog offers to share info to a repair station that is not much help. If the factory knew enough to issue the detailed service bulletin(assuming it was based on sound facts) then they should have been able to come up with wording that allowed the blades to be reskinned in the field. Perhaps they could revise the service bulletin and offer that up as a method of compliance(reskinning-and giving the general guidance to do it) if they will not withdraw it.
Randy Strock
Posts: 20
Joined: Sun Oct 11, 2009 12:52 pm

Re: SB111 importance

Post by Randy Strock »

Well.... seneca2e, (It would be nice to know your real name), you should re-read my note. At the risk of being redundant, I'll say it again... I didn't see those cracks without the aid of the 10x. My personal very close up vision isn't the best. I need reading glasses and the crack was buried, covered, disguised...whatever you want to call it.... under the paint. Using the 10x lens brought the crack line to my attention and then AFTER stripping off the paint, I was able to define the crack line. That would not have happened if I hadn't been forced to do it by the SB111. Could I have found the crack? sure. Would I have? Highly unlikely. Human nature is to do the very best to sidestep or ignore a potential problem instead of addressing it, expecially when it costs money. They made me do it, I found the problem, I'm glad they did. So, as far as I'm concerned, it was a good thing that it was issued. You're entitled to your opinions, and I'm entitled to my safety. I'll take confirmed safety over opinions any day.

Your comment about the "HUGE" blade purchase problem is incorrect. I have purchased one with a yellow tag with 371 hours on it and it's practically brand new. Proactive instead of being negatively reactive usually works best.

The SB is issued to warn you to protect yourself and contains all of the information needed to do so. it is written because of prior events that have occured. People don't sit around and make this stuff up for the fun of it.

AD's are issued because people in general are the problem, and are issued because historically people have not had the technical knowledge, the desire, the incentive, and the good sense to address a problem directly and proactively. That's just my opinion, I could be wrong.... but I don't think so. The evidence supporting that observation has forever been in front of us...hence the existence, the requirement, of AD's. Re-skin blades in the field? You've got to be kidding. General guidance? It's a LOT more complicated that that. Go back and read Bryan Cobb's attempt at it. He gave up over .005 tolerance variation and was smart to do so. How much does anyone of us know about the technical aspects of a fling wing. Would YOU want to fly in a machine with a blade reskinned by anybody who thinks they can do it ?

The AD is coming, you can count on that. You will have every opportunity to express your considered written opinions to the FAA as an owner when they solicit commentary before issuance; which may influence their directive. The comments from the Brantly Owners will have to be considered, factual, and contain solid direction for them to have any effect. I suggest that you take your time to put together a well thought out written response to their solicitation when it arrives, instead of commenting with disdain upon my suggestion that you follow the SB for your own good.

It was simply what I considered to be good advice. You don't have to use it and you can choose to ignore me. That's easy to do. However, if you want to continue to debate this entire unfortunate situation, I am quite capable of and willing to do so.....item by item, one at a time. Public discourse in the pursuit of a resolution is always good for all involved. Pick the subject matter. Chinese conspiracy? field re-skinning? costs? personal safety? They're all fair game for discussion.

btw....before you assume that i'm some kind of a flake.....go to http://www.infratech-mfg.com and http://www.portaconstructures.com and http://www.ezventmfg.com and take a good look. I started, developed, and own all three. Solid companies based upon thought and careful consideration. I'm applying the same consideration to this situation also.

Cordially, Randy Strock
seneca2e
Posts: 395
Joined: Mon Feb 11, 2008 10:35 pm

Re: SB111 importance

Post by seneca2e »

Randy,
Anyone that was even vaguely familiar with the Brantly would have found those cracks. There is a requirement to be just that to perform annuals/inspections on certified aircraft. The original maintenance manual covers acceptable and non acceptable cracks for crying out loud. Don't council me as I think I have a good deal more experience dealing with this sort of thing than you. I've been a Director of Maintenance and Chief Pilot for a 14 aircraft part 135 operation for umpteen years and still am a practicing FBO with maintenance facility for over 30 years.

Further the factory could easily have come up with an acceptable procedure for a properly qualified facility to reskin the blades. That you thought that I meant Joe Blow could do it in the back yard shows well..... That would be right up there with thinking that "owner produced parts" might be an acceptable solution to this problem. There's case after case of A/D notes that have been withdrawn after they've made the situation worse not better.

Finally that you think you found a blade with only 371 hours on it that has never been reskinned or repaired well........ Let's just say it's highly, highly, highly unlikely.

Further I comply with all A/D's to the letter regardless of my angst with them. This service bulletin should never have been released in present form. Longtime Brantly operators like Gary and others know this. Those are people that know more about Brantlys than we ever will.
User avatar
bryancobb
Posts: 285
Joined: Thu Feb 27, 2003 8:23 pm
Location: Cartersville, Georgia

Re: SB111 importance

Post by bryancobb »

Hey guys, please ease up a little. Playing "Dualing Credentials" only makes the Brantly community look like a bunch of idiots to everyone who reads it.

A calm thoughtful approach will get the most respect, and the best result. We all have to work as a team or the Brantlys will become lawn ornaments.

Although I experienced first-hand, by failing, that reskinning a blade is not for the faint-of-heart, I gained a lot of insight into what must be done to be successful. I HAVE NO INTENTION IN DOING BLADES, but I do want to be part of the solution, and the experience of trying to do one blade will help me do that.

These blades are VERY simple. They are not twisted. They only have 8 different components parts. Spar, Tip Rib, Hinge Block + Bolts, Tip Weight + Bolts, Foam Core, Skin, Rivets, and Adhesive.

There is reason to believe that some FAA Repair Center could gain the experience to be successful at legaly "REPAIRING" these blades in-the-field. My guess is...the process would require 3 workers and it would take them 10 attempts to get to a skill level of being consistently successful. There is a factory Drawing of a blade assembly in the binders that went with my ship when I sold it. I was given the source and Part Number of the adhesive used at the Brantly factory.

It's doable! The right person just has to be in the right situation in their life to make it happen.
YHO-3BR Pilots International
Randy Strock
Posts: 20
Joined: Sun Oct 11, 2009 12:52 pm

Re: SB111 importance

Post by Randy Strock »

Well Gee Whiz .....I sure do apologize for expressing some opinions on the site. And I apologize for responding to being told basically that I'm so stupid that I can't see something that was obviously right under my nose. Finding out that I'm not even vaguely familiar with my ship and that I'm making everyone look like an idiot is a real eye opener. I won't waste your time further.
9121u
Posts: 255
Joined: Sat Mar 29, 2003 6:20 pm

Re: SB111 importance

Post by 9121u »

HEY GUYS LETS NOT argue there must of bin a misunderstanding i don't think any one needs to cut each other up so lets forget... and go on.. and enjoy this forum... some times I don't always word things right and hope every one for gives me for the way i wright and spell and word things .....thanks tom
Post Reply