I will second Hot 'n' High's look at things. If something is burning in the engine and/or accessory bay, there may be something that is assisting the fire. An additional source of fuel to feed the fire (there should not be a lot available). Keeping a possibly already compromised line full of fuel in that bay available for the fire to feed on would not be my preference. The quicker you can get the fuel out of there, the better.
I have not encountered any light twins with a fire extinguishing system by the way. Can anyone think of a type, other than a WWII medium or light bomber, that has such a system?
Edited to add: With the the previous post revised, my opinion doesn't carry much weight. And I do agree that in the end, following the POH is the best advice. Most of these do start with 'fuel shut off - close' which does perhaps pay homage to Bramson's musings from back in the early days...
Last edited by Jhieminga; 15th October 2024 at 12:59.