The video of the airliner is very interesting, I've never seen that before. Very well handled.
Incidentally, I would consider that it backs up my original post. There was a fire, therefore it's a Mayday. Fire does nasty things to materials, and I have no idea whether any structural damage has been caused, so for me, it's a Mayday every time, even if the fire has gone out.
But, as Fuji says, it makes no difference anyway, because ATC will take their own view on how serious the incident is. I remember a few years ago when I had a sticky fuel drain on a C172. It appeared to be closed, and did not drip or leak on the ground, but on rotation the extra air pressure under the wing forced it open, and we saw a slow, steady stream of fuel coming out of the drain. I did not consider it an emergency - we had full tanks of fuel and weren't going to run out, and the fuel that was escaping was vapourising and not causing any concern. With hindsight, that was probably a bad call - in the same situation again, I would declare a Mayday (because I couldn't really be sure of either of those two things). But, in any case, I just told ATC that we'd be returning with a suspected fuel leak, could we please have a visual circuit. And guess what they did? Cleared me to land on any runway, and sent the fire trucks out to meet me. Absolutely the correct thing to do, regardless of what calls I may or may not have made.
FFF
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