ASK 21 grounded after November 30 ? ? ?

[Jock Proudfoot]

Gliding International posted -ASK 21 is grounded after November 30

Who knows what ?

[Andy Holmes]

I saw that too.

Nothing on Schleicher website....

What’s the story?

Andy



At 17:14 19 October 2018, Jock Proudfoot wrote:
>Gliding International posted -ASK 21 is grounded after November 30
>
>Who knows what ?
>
>

[Jim[_33_]]

On Friday, October 19, 2018 at 10:15:04 AM UTC-7, Jock Proudfoot wrote:
> Gliding International posted -ASK 21 is grounded after November 30
>
> Who knows what ?

In what issue did you read this? I have found nothing about this on the Gliding International website.

Jim

[Paul Agnew]

Read the "Celebrating Our 12th Anniversary" post.

[Jock Proudfoot]

At 23:29 19 October 2018, Jim wrote:

>In what issue did you read this? I have found nothing about this on
the Gliding International website.
>Jim
>

https://ras.gliderpilot.net/?op=s2&id=361466&vt=
..

[Ernst]

Fake news?

[Charlie Papa[_2_]]

On Friday, 19 October 2018 13:15:04 UTC-4, Jock Proudfoot wrote:
> Gliding International posted -ASK 21 is grounded after November 30
>
> Who knows what ?

This from a "Reliable Source":
The Australian GFA (equivalent to Transport Canada) has issued a national AD for the ASK 21 because of a discovery of very fine hairline cracks in the glue joint between the wing skin and spar at the root rib. In his view, this is an overreaction and was also not discussed previously with the factory. Apparently, the GFA will soon be issuing a second AD which will allow the ASK 21s to resume normal flying operations. Both ADs only apply to ASK 21/ ASK 21 Mi sailplanes registered in Australia.

[JS[_5_]]

On Saturday, October 20, 2018 at 8:19:59 AM UTC-7, Charlie Papa wrote:
> On Friday, 19 October 2018 13:15:04 UTC-4, Jock Proudfoot wrote:
> > Gliding International posted -ASK 21 is grounded after November 30
> >
> > Who knows what ?
>
> This from a "Reliable Source":
> The Australian GFA (equivalent to Transport Canada) has issued a national AD for the ASK 21 because of a discovery of very fine hairline cracks in the glue joint between the wing skin and spar at the root rib. In his view, this is an overreaction and was also not discussed previously with the factory. Apparently, the GFA will soon be issuing a second AD which will allow the ASK 21s to resume normal flying operations. Both ADs only apply to ASK 21/ ASK 21 Mi sailplanes registered in Australia.

The GFA AD site appears to not work with Firefox. I was able to view the GFA AD 686 in Opera.

http://doc.glidingaustralia.org/index.php?option=com_docman&view=download&alias=2516-gfa-ad-686-issue-1-2018-10-08&category_slug=gfa-ad-601-700&Itemid=101

Jim

[Martin Gregorie[_6_]]

On Sat, 20 Oct 2018 08:50:08 -0700, JS wrote:

> On Saturday, October 20, 2018 at 8:19:59 AM UTC-7, Charlie Papa wrote:
>> On Friday, 19 October 2018 13:15:04 UTC-4, Jock Proudfoot wrote:
>> > Gliding International posted -ASK 21 is grounded after November 30
>> >
>> > Who knows what ?
>>
>> This from a "Reliable Source":
>> The Australian GFA (equivalent to Transport Canada) has issued a
>> national AD for the ASK 21 because of a discovery of very fine hairline
>> cracks in the glue joint between the wing skin and spar at the root
>> rib. In his view, this is an overreaction and was also not discussed
>> previously with the factory. Apparently, the GFA will soon be issuing
>> a second AD which will allow the ASK 21s to resume normal flying
>> operations. Both ADs only apply to ASK 21/ ASK 21 Mi sailplanes
>> registered in Australia.
>
> The GFA AD site appears to not work with Firefox. I was able to view the
> GFA AD 686 in Opera.
>
> http://doc.glidingaustralia.org/index.php?
option=com_docman&view=download&alias=2516-gfa-ad-686-
issue-1-2018-10-08&category_slug=gfa-ad-601-700&Itemid=101
>

It opened just fine in Firefox here.

More detail: I'm using Firefox 62.0.3 running under RedHat Fedora 28
Linux, using xpdf to display the PDF. xpdf is the default PDF display
application.


--
Martin | martin at
Gregorie | gregorie dot org

[AS]

On Saturday, October 20, 2018 at 11:50:09 AM UTC-4, JS wrote:
> On Saturday, October 20, 2018 at 8:19:59 AM UTC-7, Charlie Papa wrote:
> > On Friday, 19 October 2018 13:15:04 UTC-4, Jock Proudfoot wrote:
> > > Gliding International posted -ASK 21 is grounded after November 30
> > >
> > > Who knows what ?
> >
> > This from a "Reliable Source":
> > The Australian GFA (equivalent to Transport Canada) has issued a national AD for the ASK 21 because of a discovery of very fine hairline cracks in the glue joint between the wing skin and spar at the root rib. In his view, this is an overreaction and was also not discussed previously with the factory. Apparently, the GFA will soon be issuing a second AD which will allow the ASK 21s to resume normal flying operations. Both ADs only apply to ASK 21/ ASK 21 Mi sailplanes registered in Australia.
>
> The GFA AD site appears to not work with Firefox. I was able to view the GFA AD 686 in Opera.
>
> http://doc.glidingaustralia.org/index.php?option=com_docman&view=download&alias=2516-gfa-ad-686-issue-1-2018-10-08&category_slug=gfa-ad-601-700&Itemid=101
>
> Jim

Opened just fine in Chrome ....
Uli
'AS'

[Charlie M. (UH & 002 owner/pilot)]

And opens fine with Safari on an iPad.

[Dan Daly[_2_]]

On Saturday, October 20, 2018 at 7:59:53 PM UTC-4, Charlie M. (UH & 002 owner/pilot) wrote:
> And opens fine with Safari on an iPad.

Good on Firefox 62.0.3 on Mac OS High Sierra 10.13.6.

Dan

[[email protected]]

I inquired about this with Schleicher. This is only an Australian response to superficial cracking in the thickend resin around the spar butt at the wing root. These cracks are the subject of conversation at nearly every annual inspection of all ASK 21s that I look at. They show up fairly early in the service life and I have never seen any of them become more than superficial.
Rex Mayes

[Charles Longley]

The voice of reason.

[Justin Couch]

On Monday, 22 October 2018 15:07:20 UTC+11, Charles Longley wrote:
> The voice of reason.

Unfortunately not. I inspected our club aircraft today. The crack has propagated into the bond between the root rib and the spar, right next to the front lift pin on both wings and is proceeding to zipper up the bond line. I'm aware of at least one other aircraft with exactly the same cracking. Happy to share high-res photos if anyone is interested. Far too big to post here. Ping me privately.

[Hartley Falbaum[_2_]]

On Friday, October 19, 2018 at 1:15:04 PM UTC-4, Jock Proudfoot wrote:
> Gliding International posted -ASK 21 is grounded after November 30
>
> Who knows what ?

Justin:
Thanks for the photos. I inspected our ASK21, N612MG Sunday. One minuscule crack in the right wing, about 5mm long over the spar, not beyond the radius. Just barely visible with strong light and magnification. I didn't use my Oxygen-Acetylene torch, just a flashlight.
Cheers
Hartley Falbaum
Atlanta, GA, USA

[Eric Munk]

Technical Note issued by Schleicher. No AD yet. Inspection before December
31st, 2019.

https://www.alexander-schleicher.de/wp-content/uploads/2019/02/210_TM41_E.pdf