Hi,
Thank you for posts.
According to many posts, it seems there are no regulations (FAR's, JAR's) and procedures (aircraft manufacturers & companies) regarding the restart of shutoff engine after fire if there is a reel need if this engine. May be it is obvious for them since there both extinguisher bottles are discharged (so no need for regulations..)? or is it up to the pilot to decide?
-Can we restart an engine that have been shutoff for another raison than fire? (of course if there a reel need of this failed engine).
I know an windmilling engine need lubrication, but I am still wondering if the oil can cause damage fo the engine during fire. Even tough the oil is synthetic (I don't know its characteristics: flash point...), high temperature may ignite oil vapor. Hydraulic fluid (Skydrol) is fire resistant, but yet it is shutoff in case of engine fire. May be fire detectors are not totally reliable (which seems true) so we don't want to loss an engine by shutting off oil? may be there is another raison?
Originally posted by Piltdown Man
And let us not forget than in many aircraft, you can't "Undo" the Fire Handle. It's a one-way lever. Therefore, the option of restarting is not available.
Can you please mention some examples?
Originally posted by Techman
As mentioned, you would pull the fire handle in case of severe engine damage, and also in case of fuel leak from the engine.
may be in such case we can just move the engine start levers to cutoff (both spar valve and HPSOV are closed), and we can still get a hydraulic power (limited) from the windmilling engine if not seized of course.
Thank you.
Best regards