Fire indicated out, test shows warning system still good, it is reasonable to believe fire is out. But check for damage elsewhere anyway and land ASAP. ASAP still implies that you will be landing on an airport that will at least accommodate your aeroplane safely.
Test fails, suspect further damage and consider the POSSIBILITY that there may still be fire and act as if this is the case. It is all about understanding the relative seriousness of the latter possibility compared with the lesser probable risk of the former.
Uncontained fire or very severe damage MAY require a decision to land somewhere quite unsuitable (even unsafe in normal circumstances) but survivable, so could mean re-routing to minimise time in flight should the worst eventuate.
That is what they did with the Gimli glider, though with no fuel it was not likely to burn!
Capt Haynes had to 'invent' a new way of controlling an aircraft with thrust alone. It sure as hell was not in the QRH.
I believe that Capt Sullenberger went straight for the APU before getting into the rest of the QRH. It was out of sequence but they did not have time to work all the way through the QRH so needed to prioritise. Since then Airbus have probably rewritten the QRH but I am not an Airbus person so don't know for sure.
Last edited by Mach E Avelli; 2nd Aug 2015 at 09:51.