mesh fabric meeting 25.855 burn

[bf109g]

Hi guys. Anybody know of a 9X9 mesh fabric that will pass burn tests per 25.855? This is a 9G separator net for a bulk loaded airplane. The mesh is used to keep smaller stuff in place. I'd use herculite, but can't because the customer doesn't want to re-do the smoke detection test.

Not sure what was used originally. The customer and their original supplier are not on speaking terms.

 

[der8110]

You might be confused, 25.855 is for the liner (walls, ceiling, floor) and not separator nets. Liners have to meet burn-through per Appendix F25.3. Tiedown equipment would only have to meet Appendix F25.1, 4.0 ipm horizontal test, most every nylon and polyester would easily meet. Wise to use identical size/pitch/open space mesh to remain similar to existing smoke detection test results.

 

[bf109g]

der8110,

Thanks for the reply. Non-liner materials are covered in 25.855(d).

My concern is that the mesh is vinyl coated, like that used on dump truck covers. I'm looking at Bo-Tex 1300. They say that it meets some sort of horizontal burn test. I'm going to call them today to get clarification.