Structural cracks found in 737NG

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Re: Structural cracks found in 737NG

Unread post by kudu177 » Fri Nov 01, 2019 2:01 pm

Jasondn78 wrote:
Fri Oct 11, 2019 9:29 am
Have any of the B737NG models flying in South Africa been found to have the same issue?
Comment from Comair's PR company this morning is that all its NG aircraft have been checked and cleared.
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Re: Structural cracks found in 737NG

Unread post by MadMacs » Fri Nov 01, 2019 8:27 pm

SAAT changing a pickle fork on a B767:

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Re: Structural cracks found in 737NG

Unread post by dollar » Sat Nov 02, 2019 1:23 am

MadMacs wrote:
Fri Nov 01, 2019 8:27 pm
SAAT changing a pickle fork on a B767:

Image
Ha so now I now why it’s called a pickle fork!
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Re: Structural cracks found in 737NG

Unread post by MadMacs » Sat Nov 02, 2019 7:28 am

StressMerchant wrote:
Thu Oct 03, 2019 10:44 am
If the link is right, it seems they'll issue it as an emergency AD. Must be a big issue.

I wonder if the root cause is the design, the manufacture, the installation, or the operation.

BTW, any idea what alloy it is? One report said Al 7075, but I would not have expected that alloy in such a location. I know the bigger aircraft use titanium, not sure if the 737 series warranted that level.
Boeing mostly used aluminum forgings on the older aircraft, I dont recall any steel on them except the dry bay above the engines on the B737 and the strut fairings on the B747. Its interesting to see that the Japanese invented 7075 in secret in 1935.
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Re: Structural cracks found in 737NG

Unread post by Highvoltage » Sat Nov 16, 2019 10:47 am

https://www.flightglobal.com/news/artic ... ra-462155/

South Korea grounds 13 737-800NGs in latest
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Re: Structural cracks found in 737NG

Unread post by biffvj » Sun Nov 17, 2019 2:01 pm

Highvoltage wrote:
Sat Nov 16, 2019 10:47 am
https://www.flightglobal.com/news/artic ... ra-462155/

South Korea grounds 13 737-800NGs in latest
From the last sentence it shows that aircraft with under 22600 cycles have been found with cracks. Time to lower the cycles for pickle fork inspection.
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