Your answer raises a key point and is the reason why I raised this topic.
How do you know whether the fire is under control or not ?
Let's say you discharge the extinguishers and they discharge normally how do you know that the fire is therefore under
control ? For an engine fire you usually get an indication that the fire is extinguished and if in any doubt you can always take a look assuming your engines are wing mounted. This is not the case with a cargo fire, not on any aircraft I've flown. Indeed on the 747 classic they specifically mention the fact that when the second round of extinguishers are discharged the cargo fire warning may illuminate again ( Not very reassuring)!! I realise that with most cargo compartments you can reduce the airflow to them to aid the work of the extinguishers and as a result the chances of the fire surviving are slim but is there not always that chance nevertheless ? And if there is where does that leave you having assumed that because the extinguishers discharged the situation is under control and you can fly on ?
Does anybody know of or can direct me to an article on this subject which maybe can alleviate some of these doubts ?