Matronics Email Lists :: View topic - FAA Alerts had CH701 items this month.

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

FAA Alerts had CH701 items this month.

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

perryrt(at)hotmail.com
Guest

Posted: Mon Jan 23, 2006 2:56 pm Post subject: FAA Alerts had CH701 items this month.

Sorry if this is a duplicate posting, folks, but I tried posting this 

several days ago and it seems to have never shown up in the digests that I 

get, so I'm assuming some SPAM filter munched it somewhere.



Anyway, for those of us that aren't familiar with it, the FAA puts out a 

monthly publication - titled AC43-16A, or "Aviation Maintenance Alerts". 

It's a summary of feedback they're getting (either voluntarily or required 

per the FAR's) from operators and mechanics in the field. This last month 

(Dec 05) it had three items about the CH-701 in it. The issue can be had 

from the FAA at:



http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/index.cfm



It's been somewhat unusual to see items about experimental aircraft in the 

past - perhaps this is a sign of an increased focus on SLSA-type aircraft 

(which is a good thing, I think.)



Anyway, the important bit is that while these reports carry NO regulatory 

weight with them, it's been my experience as an A&P that things that show up 

in this publication are worth keeping in mind the next time you look at an 

area of the aircraft, 'cause if somebody else noticed them and was motivated 

enough to send in a report on it...well, let's just say that most mechanics 

aren't known for their love of paperwork.



We pass these publications around to all our guys in the shop here, and I 

try to keep a binder with back issues with the "items" about the aircraft we 

have here tabbed. Of the three items that I saw in this particular issue, 

the prop hub crack scared me a bit (considering this prop appears to have a 

history of cracking in other applications - check www.ultralightnews.ca and 

search on "Warp Drive" for further), and the other two issues concerned me a 

little considering they're both related to primary flight controls. I think 

that if I owned or maintained a 701 (I don't, not yet), I'd keep an eye on 

those areas, or possibly look at beefing up those areas a bit while 

building.



Thanks -



Richard Perry, A&P/IA

mike.sinclair(at)ATT.NET
Guest

Posted: Mon Jan 23, 2006 5:22 pm Post subject: FAA Alerts had CH701 items this month.

Richard



   Appreciate you bringing the 701 safety alerts to our attention. As you (or

any other A&P's) have regular access to these type of alerts, most defintely

feel free to pass this info along to other builders. As I am limited to a dial

up connection only, I don't usually see these type of alerts, though suspect I

might try to look them up a little more. This one took over 45 minutes to

download.



   Now, for what it's worth, I took a good look at the alert and my best guess

on the prop hub crack is that it is probably on an older 582 powered 701 as it

is only a 2 bladed prop. Most of the current builders if using a warp drive prop

would now have one of the newer 3 blade assemblies. On the cracked elevator

hinge bracket, this looks to be one area that should be looked at during

conditional inspection. Though looking at the condition of the paint surrounding

the area leads one to belive that this aircraft has had considerable use,

possibly been parked outside a long time, and the problem should have been

noticed quite some time ago due to the deterioration in the bend area. Finally,

the loose rudder hinge problem looks to me to be a builders error in the first

place. I have the plans dated 1986 and even in them it calls for AN3 bolts to

hold this plate in place, not pop rivits. I would suspect that a close

examination on this aircraft would find more than just the 3 problem area listed

in the alert.



That said, thanks again for passing on this info.



Mike Sinclair  N701TD

 	  Quote: 	
		   Anyway, for those of us that aren't familiar with it, the FAA puts out a

 monthly publication - titled AC43-16A, or "Aviation Maintenance Alerts".

 It's a summary of feedback they're getting (either voluntarily or required

 per the FAR's) from operators and mechanics in the field. This last month

 (Dec 05) it had three items about the CH-701 in it. The issue can be had

 from the FAA at:



 http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/index.cfm



 the prop hub crack scared me a bit (considering this prop appears to have a

 history of cracking in other applications - check www.ultralightnews.ca and

 search on "Warp Drive" for further), and the other two issues concerned me a

 little considering they're both related to primary flight controls. I think

 that if I owned or maintained a 701 (I don't, not yet), I'd keep an eye on

 those areas, or possibly look at beefing up those areas a bit while

 building.



 Thanks -



 Richard Perry, A&P/IA

marinegunner(at)gmail.com
Guest

Posted: Mon Jan 23, 2006 5:40 pm Post subject: FAA Alerts had CH701 items this month.

Richard,

I went to the web site you bookmarked, but could not find my way to

AC43-16A. Can you give me some additional guidance - I am very interested in

reading these safety items.

On 1/23/06, Richard T. Perry <perryrt(at)hotmail.com> wrote:



 	  Quote: 	
		    the FAA puts out a

 monthly publication - titled AC43-16A, or "Aviation Maintenance Alerts".

 It's a summary of feedback they're getting (either voluntarily or required

 per the FAR's) from operators and mechanics in the field. This last month

 (Dec 05) it had three items about the CH-701 in it. The issue can be had

 from the FAA at:

 http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/index.cfm

 --

 Semper Fi,

 Steven R. Hulland

 CH 701, Amado, AZ

 This and all other incoming/outgoing email, attachments and replies

 scanned prior to opening/sending and uses an external firewall to help

lgingell

Joined: 10 Jan 2006
Posts: 50
Location: Lake California Airpark 68CA

Posted: Mon Jan 23, 2006 7:10 pm Post subject: Re: FAA Alerts had CH701 items this month.

Its the December PDF:

Look here: http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/media/2005/2005_12_Alert.pdf



hope this helps you find it,

..lance

_________________
Zodiac XL/Jab 3300
http://lancegingell.com

mike.sinclair(at)ATT.NET
Guest

Posted: Mon Jan 23, 2006 7:29 pm Post subject: FAA Alerts had CH701 items this month.

Steve

When you go to the link, and see the box with the 2006 that has the click down

button, go there and pick 2005, then Dec. And it gets you right to where you

need to go.

Mike Sinclair  ex- US Navy, Just like always, gotta help the Marines get to the

beach!

Steve Hulland wrote:

 	  Quote: 	

 Richard,

 I went to the web site you bookmarked, but could not find my way to

 AC43-16A. Can you give me some additional guidance - I am very interested in

 reading these safety items.

 On 1/23/06, Richard T. Perry <perryrt(at)hotmail.com> wrote:

 :

 > http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/index.cfm

 > --

 > Semper Fi,

 > Steven R. Hulland

 > CH 701, Amado, AZ

mike.sinclair(at)ATT.NET
Guest

Posted: Mon Jan 23, 2006 7:29 pm Post subject: FAA Alerts had CH701 items this month.

Steve

When you go to the link, and see the box with the 2006 that has the click down

button, go there and pick 2005, then Dec. And it gets you right to where you

need to go.

Mike Sinclair  ex-US Navy (and not just an average boat jockey, 2 tours to Nam

with one spent in the Delta riding river boats), & just like always, gotta help

the Marines get to the beach!

N701TD

Steve Hulland wrote:

 	  Quote: 	

 Richard,

 I went to the web site you bookmarked, but could not find my way to

 AC43-16A. Can you give me some additional guidance - I am very interested in

 reading these safety items.

 On 1/23/06, Richard T. Perry <perryrt(at)hotmail.com> wrote:

 :

 > http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/index.cfm

 > --

 > Semper Fi,

 > Steven R. Hulland

 > CH 701, Amado, AZ

craig(at)craigandjean.com
Guest

Posted: Mon Jan 23, 2006 7:29 pm Post subject: FAA Alerts had CH701 items this month.

Or as a tiny URL:



http://tinyurl.com/9ew7d



-- Craig 



--

mike.sinclair(at)ATT.NET
Guest

Posted: Mon Jan 23, 2006 7:45 pm Post subject: FAA Alerts had CH701 items this month.

My appologies guys, didn't think the first little bit of guff for the Marines went

out. Thought I stopped it before it went because I wanted to add another line. And

Steve, I hope you didn't take any offense, it's just a small part of the crap I get

from my other ex-Marine friends. After seeing all the Semper-Fi, I finally couldn't

hold back any longer. And for sure am proud of all our Vets.



Mike Sinclair



Do Not Archive

marinegunner(at)gmail.com
Guest

Posted: Mon Jan 23, 2006 8:15 pm Post subject: FAA Alerts had CH701 items this month.

Mike,

No offense taken, I am aware of the source. During my twenty plus years in

the Corps I spent more than three years afloat, 2 years teaching at

Navy/Marine Corps schools; 1.5 years as OIC of Navy/Marine Corps schools;

1/2 year stationed at NAS; and 2.5 years as Marine I&I at NAS. Rank varied

from Sergeant to Captain. In all cases, the Navy guys needed lots of help

reading/working radar/filling out personel evaluations/making decisions and

figuring out who the enemy was. On the other hand, they never needed help

with Acy-Ducy; Drinking Coffee; Finding their Rack; or Determining the best

Liberty location and time. Besides, during those few times I needed a taxi

from the boat to the beach, the Navy was there. I got to the beach via Navy

taxi (excluding numerous liberty taxi's) eight times - appreciate the rides.



BTW,

I did go to the "Display Alerts" and attempted to display December 2005 - it

did not work. Will try something else when I do not have to get some sleep

before work.



*Do Not Archive

*

--

Semper Fi,

Steven R. Hulland

CH 701, Amado, AZ



This and all other incoming/outgoing email, attachments and replies scanned

prior to opening/sending and uses an external firewall to help insure virus

n7cr(at)bellsouth.net
Guest

Posted: Mon Jan 23, 2006 9:12 pm Post subject: FAA Alerts had CH701 items this month.

Did anyone else get the impression that this particular 701 has been poorly 

maintained?



In the photos of the rudder hinge, I believe the location was identified 

incorrectly in the report. That appears to be the upper rudder hinge plate 

7F4-1, which as Mike correctly points out should be attached with 4 ea AN3-4A.

It is identified as the _lower_ hinge bracket in the report.



It also appears that the elevator hinge bracket described in the report is more 

properly identified as the center hinge gusset 7H5-4 in the 2004 plans, which 

has been changed from two L sections riveted together as shown in the photo, to 

a single bracket with an additional flange which would reduce the flexing of the 

gusset web which causes the stress crack at the bend.



Rory

CH-701 empennage nearly complete

Mike Sinclair said the following on 1/23/2006 7:21 PM:



<SNIP>

 	  Quote: 	
		   would now have one of the newer 3 blade assemblies. On the cracked elevator

 hinge bracket, this looks to be one area that should be looked at during

 conditional inspection. Though looking at the condition of the paint surrounding

 the area leads one to belive that this aircraft has had considerable use,

 possibly been parked outside a long time, and the problem should have been

 noticed quite some time ago due to the deterioration in the bend area. Finally,

 the loose rudder hinge problem looks to me to be a builders error in the first

 place. I have the plans dated 1986 and even in them it calls for AN3 bolts to

 hold this plate in place, not pop rivits. I would suspect that a close

 examination on this aircraft would find more than just the 3 problem area listed

 in the alert.

 

 That said, thanks again for passing on this info.

 

 Mike Sinclair  N701TD

ggower_99(at)yahoo.com
Guest

Posted: Mon Jan 23, 2006 11:03 pm Post subject: FAA Alerts had CH701 items this month.

By the way, looks like that airplane (in the article)  is very negletled (sp?)   is no surprise to find this problems there,  also I think (almost sure) is a pre 912  model,  remember that the 701 has about 25 or more years since the first plans were released...   

   

  Nothing better that a good daily preflight,  personal washing the plane and constant by the book mantainance to keep a safe airplane.



  What ever, if someone finds something important like this, please let us all know.  I (we all)  appreciate it very much.   Safety first.

   

  Saludos

  Gary Gower.

  

Rory Davis <n7cr(at)bellsouth.net> wrote:

  



Did anyone else get the impression that this particular 701 has been poorly 

maintained?



In the photos of the rudder hinge, I believe the location was identified 

incorrectly in the report. That appears to be the upper rudder hinge plate 

7F4-1, which as Mike correctly points out should be attached with 4 ea AN3-4A.

It is identified as the _lower_ hinge bracket in the report.



It also appears that the elevator hinge bracket described in the report is more 

properly identified as the center hinge gusset 7H5-4 in the 2004 plans, which 

has been changed from two L sections riveted together as shown in the photo, to 

a single bracket with an additional flange which would reduce the flexing of the 

gusset web which causes the stress crack at the bend.



Rory

CH-701 empennage nearly complete

Mike Sinclair said the following on 1/23/2006 7:21 PM:





 	  Quote: 	
		   would now have one of the newer 3 blade assemblies. On the cracked elevator

 hinge bracket, this looks to be one area that should be looked at during

 conditional inspection. Though looking at the condition of the paint surrounding

 the area leads one to belive that this aircraft has had considerable use,

 possibly been parked outside a long time, and the problem should have been

 noticed quite some time ago due to the deterioration in the bend area. Finally,

 the loose rudder hinge problem looks to me to be a builders error in the first

 place. I have the plans dated 1986 and even in them it calls for AN3 bolts to

 hold this plate in place, not pop rivits. I would suspect that a close

 examination on this aircraft would find more than just the 3 problem area listed

 in the alert.

 

 That said, thanks again for passing on this info.

 

 Mike Sinclair N701TD

 


	




		

---------------------------------

 Ring in the New Year with Photo Calendars. Add photos, events, holidays, whatever.

cfd(at)thegateway.net
Guest

Posted: Tue Jan 24, 2006 8:47 am Post subject: FAA Alerts had CH701 items this month.

Richard,

Good information, thanks.  I believe that Zenith did change to bolts for the

upper rudder hinge attachment.



Also, somewhere I remember reading that the vibration/shaking from the

starting and stopping of the Rotax 912 can cause some problems with the

tail.

Chuck D.

N701TX



---

n7cr(at)bellsouth.net
Guest

Posted: Fri Feb 03, 2006 10:32 pm Post subject: FAA Alerts had CH701 items this month.

Reference the FAA alert:

<http://www.faa.gov/aircraft/safety/alerts/aviation_maintenance/media/2005/2005_12_Alert.pdf>



I finished assembling my 701's elevator & stabilizer tonight and noticed 

something I hadn't before while the brackets were clecoed.



If you look at the photos on pages 13 and 14, notice the wear on the gusset 

edge.  This is caused when the elevator is at full up position and 7H5-3 horn 

angle bangs against the gusset. I guess it's intended as an elevator stop?



This potential wear point could be avoided (too late in my case, since I 

followed the drawings and assembly manual) if the elevator center hinge assembly 

(7H3-3 and 7H5-4) is flipped 180 deg and shifted to the left to place the 

centerline on the side of 7H3-3 opposite the gusset.



It might be a good idea for you fellow 701 owners to take a look at this. For me 

it will be one more thing to check on the preflight.



Rory

CH701 Kit empennage completed

Lacombe, LA



 	  Quote: 	
		   It also appears that the elevator hinge bracket described in the report is more 

 properly identified as the center hinge gusset 7H5-4 in the 2004 plans, which 

 has been changed from two L sections riveted together as shown in the photo, to 

 a single bracket with an additional flange which would reduce the flexing of the 

 gusset web which causes the stress crack at the bend.

 

 Rory

 CH-701 empennage nearly complete

jean-paul.roy4(at)tlb.sym
Guest

Posted: Sat Feb 04, 2006 3:20 am Post subject: FAA Alerts had CH701 items this month.

Thanks Rory for the heads up. I'll certainly look into it. I'll be reaching

this point this week end.



Jean-Paul

CH 701, mounting the hor. stab

---

JERICKSON03E(at)aol.com
Guest

Posted: Sat Feb 04, 2006 7:21 pm Post subject: FAA Alerts had CH701 items this month.

In a message dated 2/4/2006 12:33:33 AM Central Standard Time, 

n7cr(at)bellsouth.net writes:



If you look at the photos on pages 13 and 14, notice the wear on the gusset 

edge.  This is caused when the elevator is at full up position and 7H5-3 horn 

angle bangs against the gusset. I guess it's intended as an elevator stop?

Sounds like the position when the AC is parked, with the stick secured in the 

full back position. Perhaps secured back with the seat belt? Perhaps loosens 

a little, then works in the wind?



We could be doing the damage ourselves.



Is there another, better, way to secure the elevator?

zodie(at)adelphia.net
Guest

Posted: Mon Feb 06, 2006 8:46 am Post subject: FAA Alerts had CH701 items this month.

---

n7cr(at)bellsouth.net
Guest

Posted: Mon Feb 06, 2006 7:01 pm Post subject: FAA Alerts had CH701 items this month.

R.P. said the following on 2/6/2006 10:42 AM:



 	  Quote: 	
		   I'm not sure about the 701's elevator, but the elevator stop on my 601 is 

 attached to the rudder fairing and is set for full deflection of the 

 elevator without allowing the  horn and gusset to ever contact each other.

  Is the 701 different?

 

  Rick Pitcher

  N601ZR


	


Hi Rick, Glad to see you over here too.



Looking at the drawings it appears there is no "real" up elevator stop on the 

CH-701.  Down elevator is limited by the contact of the lower elevator horn 

against the rear of the fuselage, as noted in the drawings to "later: file to 

adjust elevator stop" (Dwg. 7H5). No mention of up elevator stop.



Rory

CH-701 working on wing skeleton

Lacombe, LA

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum