Being a Puma man fire retardancy is a subject that is close to most puma crews hearts. Even when i was in hot places i always wore at least 2 layers of clothing even in a 45degree heat. If i could have got my hands on a desert flying suit i would have, reason being, massive difference in survival in a flying suit.
Follow the link at the bottom for the differences, these tests are not on flying suits but the clothing on the left is nomex (same as a fying suit) and the clothing on the right is not (read CS95.) Although this is not testing exactly what we wear, the videos are very similar to the results of when our clothing was tested. Bear with it, it takes a few mins too load
http://www.reliablesafetysupply.com/...co%20Petro.htm