What a cluster!   Are there no portable fire bottles used anywhere?   Passengers are going all over the place.

Aren't airports federally regulated?
That should explain everything.

Over the years, I have put out two aircraft fires with portable fire extinguishers (two different airports and two different companies).  

Both times, I managed to put the fire out before the repair bill got too ridiculous.

Both times, I got bitched at (no punishment, just bitching) by someone in management for the 'mess I made' with the dry chemical from the extinguishers.

A person could start to suspect that management wants the plane to be written off as a complete loss, once the fire starts.

What proportion of the fleeing passengers grabbed their carry-on?

I’ve seen worse.

It does look like the fire originated in the forward avionics bay, for which I think of no aircraft that has any sort of fire suppression system. Best case scenario that I can think of is that ground personnel grabs fire extinguisher on a wall somewhere and dowse that fire before smoke gets into the cabin. Which given the timeframe, I would think it did.

But yeah. If you evacuate, it’s rarely organized

That’s incredible that you were given any grief whatsoever for putting out an active fire on an airframe

Only the engines have fire suppression.

I had a fire in the Electrical Equipment bay after a lightning strike at the gate, the smoke rose up through the walls and started coming out of the ceiling. At least on that jet there is no fire detection or suppression in the E&E bay.

In that video, I wonder if the E&E door was open because it is clearly melting an dripping something. It is amazing nobody got a fire bottle and tried to put it out, it looks like nobody noticed the fire  for a long time even the guys by the nose of the jet. Very strange.

First one was over 30 years ago, so the details are a bit fuzzy.  I mainly remember that it was just complaints about 'the mess I made' by using a dry chemical extinguisher on a plane on the ramp.  The dry chemical extinguisher was just a few steps away from a direct path to the fire from where I was when I first saw the flames, so grabbing it seemed the most logical option.

Second one was maybe 20 years ago, and the plane was in a hangar being worked on.  I happened to be standing next to a dry chemical extinguisher when I saw the flames, so that was what I grabbed.  Again, the bitching was about 'the mess I made' by using a dry chemical extinguisher.  We had a few CO2 extinguishers, but they were all in another hangar (and were bulkier and heavier).

Either incident could have been better handled with "at least the fire was put out, but now that we have time to review what happened, was there anything that could have been done that would have resulted in a better outcome?" - after both incidents, I did think back through what happened and pick out points where I could have trimmed a small amount of time from my response.
But no, their choice was to complain to me about how I had created 'more work' by using the type of extinguisher that was closest at hand.

It is truly amazing how stupid management can be.

I declared a medical emergency on a 15 mile final into JFK after the FA did 3 dings ( emergency signal ) and said a doctor on board says a first class passenger is having a heart attack and is laying in the isle. People will be up and
in  the isle attending to the passenger during landing.

I got criticized by senior management for declaring a medical emergency without calling dispatch and the contract aviation medical team on the radio for guidance.

Luckily the Chief Pilot corrected them and said that contacting dispatch and the aviation medical team was not appropriate or consistent with proper priorities and the Flight Operations Manual on a  15 mile final  and I that I took the proper course of action.

I think that was the ground power plug that lit up, and the dripping stuff was melted burning plastic or rubber.

Now that you mentioned it, I've never worked on a jet or turboprop with smoke detection or fire suppression in the avionics compartments. Seems like a place where you'd want one.

Cargo compartments do as well. I've even seen lavatory trash compartments with a rudimentary extinguishing system.

I've seen it mentioned multiple times now that it appears to be the ground power electrical plug.  Not sure why any ground personnel didn't pull it.   Another thing I noticed was the aircraft exterior lights remained illuminated throughout.   Up until the very end you can still the cabin lights are still "On".   Unsure of power source of interior lighting for emergency ground egress however.   But with that green wing light On also I wonder if the pilots didn't turn off all power including ground power?
From my days flying in the C-130 turning off all power was a specific requirement for ground egress.  Battery Switch "OFF"  Perhaps there's some nuance here with passengers and aircraft still at a Gate, etc.

Some airbuses have cargo fire suppression

And the lavatory trash receptacle on older airframes.

Probably still on APU power. I don't know Delta's policy on evacuating an aircraft, but I do know that cabin emergency lights don't light the way out as well as the regular cabin lights do.

Based on what I witnessed on the ramp, nothing in that video surprised me. The smart ones either don't work there anymore or they are afraid of getting in trouble for doing something that they weren't trained to do, and the rest will stand by until directed to do something.

Our egress lighting (along with a couple other things) is powered by a set of emergency batteries, so even in the event of total power loss pax can in theory see the way out. Wouldn’t surprise me if there was a similar arrangement on a Bus.