chornedsnorkack - you will need to refine your definition of 'fire' - since ETOPS allows up to 180 mins from a diversion and possibly more, so 30 minutes would be a bit of a problem.
If it is a question on fire suppression/resistance you will do better on 'Tech Log' and I am putting you over there. You may wish to refine your query there? If it is just a 'spotter's' question, no doubt we will see you back here.
Re the BA 737 at Manchester - it did not 'fly'.
Moved from Spectators' Balcony