Originally Posted by
tubby linton
I still give the apu 3 minutes after I have started it to purge it before I put the bleed on ,so it could fill the cabin with oil fumes or de-icing fluid, if you start it with the bleed on.
That mirrors a policy on my old airplane, and our current policy during deicing. I was thinking more about the hot summer day when the ground crew opts not to connect the air hose.