I have seen the results of a fuel fed engine compartment fire on an RV (not mine).
Do not be concerned with aluminum firewall rivets.
The heat of the fire will follow the normal airflow pattern to exit at the bottom of the cowl.
DO be concerned with the aluminum floorboards under the rudder pedals.
On the observed craft, there was a melted hole in that area.
It has been suggested to cover some of the bottom skin with stainless.
While I have not done it (the suggestion was post construction), I think it is a good thing to consider.
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
Last edited by rzbill : 11-25-2020 at 12:55 PM.