Originally Posted by
Max Angle
I believe that, unlike the V2500 powered version, the previous CFM engine CEO worked the same way with the oil quantity not always visible.
When we got our CFM-LEAP powered NEOs I started out turning the switch to crank but word from on-high is that we are not to do it that way.
I think it's okay on ground air, but if using APU bleed, turning the switch to crank leads to an extra on/off cycle on the packs.