Question about tank / hardware sealant.

[goodyFAB]

Question, 

can anyone offer an explanation why the sealant called out for fuel tank inspection windows/screws is different for the wing walk inspection window ? 
 

thank you!

[Shadrach]

7 hours ago, goodyFAB said:

Question, 

can anyone offer an explanation why the sealant called out for fuel tank inspection windows/screws is different for the wing walk inspection window ? 
 

thank you!

The sealant specified for the access panels is non-adhesive. The sealant specified for the wing walk panels is adhesive. Presumably this was specified due to the need for the wing walk panels to withstand the stress of foot traffic. 

[Guest]

11 hours ago, goodyFAB said:

Question, 

can anyone offer an explanation why the sealant called out for fuel tank inspection windows/screws is different for the wing walk inspection window ? 
 

thank you!

Sealant for most access covers and windows is of a lower strength, the one under the wing walk needs to be higher strength to handle the weight of standing on it.  Later models had a strengthened access panel as well.

[Shadrach]

2 hours ago, M20Doc said:

Sealant for most access covers and windows is of a lower strength, the one under the wing walk needs to be higher strength to handle the weight of standing on it.  Later models had a strengthened access panel as well.

Been a while since I’ve been in there, but I am pretty sure that large panel on my 67 F has a stringer or stringers. 

[goodyFAB]

On 10/9/2022 at 7:07 AM, M20Doc said:

Sealant for most access covers and windows is of a lower strength, the one under the wing walk needs to be higher strength to handle the weight of standing on it.  Later models had a strengthened access panel as well.

thanks ! 

that makes sense