OK, not the best example for SwissAir and a little bit off topic, but...
The crew then put on their oxygen masks and the aircraft began its descent. Zimmermann put Löw in charge of the descent while he personally ran through the two Swissair standard checklists for smoke in the cockpit, a process that would take approximately 20 minutes and become a later source of controversy.
Shortly after the first emergency declaration, the captain can be heard leaving his seat to fight the fire, which was now spreading to the rear of the cockpit; the Swissair volume of checklists was later found fused together, indicating they were possibly used to fan back the flames.
He must have been really thankfull for the company investing in nice polycotton shirts at this point - RIP a very brave man.
Honestly, I am staggered that the airlines have such a laissez faire attitude to PPE for their crews, as does this article about a talk on Skybrary:
SKYbrary - Talk:Fire in the Air
This is an excellent review of the dangers of fire in the air. However, the list of dangers only includes mechanical effects of fire, and limitations to pilot visibility because of smoke. Ignored is direct injury to the crew from heat flux, flame, and products of combustion. In at least 2 recent in-cockpit fires, the crew were probably incapacitated - or dead - before impact. The current emphasis on visibility devices is wise, and will be protective in the future to maintain aircraft control. Breathing 100% oxygen thru a tightly fitted, non-leaking mask will avoid inhalation of cyanide, and other combusion products. But...the crew has no protection against the thermal effects of fire in the cockpit. In fact, crew clothing could not be worse: Short sleeve, acrylic shirts, and trousers of similar fabrics. Artificial fibers simply melt into the skin, offering little heat energy absorption or reflection Nomex and similar fabrics reflect heat and insulate the skin - ask any race car driver who wears at least 2 layers, or military pilots with one layer (and mandator cotton knickers!) Having studied this problem and convened the world's experts in fire resistant clothing, I probabl should be a strong advocate of Nomex for commercial carrier crews. But... Happily, cotton and wool offer some temporary protection against direct flame. Tens of seconds only, but enough to perhaps make a difference in the next in-cockpit fire. A long sleeve denim shirt is far better than a short-sleeve nylon or acrylic. To date, no airline crews wear any fire-resistant clothing, despite ample evidence of need. Only Air Canada has required wool uniforms, after a lethal cabin fire. So, today the AC cabin crew are relatively safe, and able to accomplish their mission of passenger safety. Up front the same airline's pilots - as all other airlines' pilots - disdain cotton or wool, or long sleeves. Sad, and reprehensible.
Enough said?