CAA Act on Cabin Baggage

[TightSlot]

is "a descent, door cracked open and out it goes" a thought that crosses ever your minds?

You can solve the problem by cooling the batteries, and containing the fire. Quick & Dirty solution is to turn off seat power elex, and immerse the battery in water - move an empty catering canister near the burning battery, fill with water (not ice) and move the battery into it with a fire blanket and fire gloves (and a short prayer - this process is not much fun due to the explosive nature of these fires). Move the canister to the galley and then add ice. Another good place for the battery (when cooler) is in an empty oven.

Once the fire is out, the authorities are going to want to examine the evidence, so disposing of it is frowned upon - not least by those living under the flightpath. Finally, depressurising and opening doors is tricky stuff on a large jet. The only aircraft I've known where a procedure for this existed is 747 for smoke clearance: Having read and learned the procedure, it's not something I'm ever in a hurry to do.

C/G and trim - I don't know the answer - we don't watch for it as we're expected to be fighting the fire.

Bulkheads - I assume that they are fireproofed to a degree but they are not hermetically sealed: Smoke, Gas and Fumes will travel throughout the aircraft and usually will kill you long before the heat. One of the things that we need to be careful about in a cabin fire is the use of passenger oxygen systems. The Flight deck on large jet transports does (usually) have an independent oxygen supply.