Hi,
Thank you for your posts.
-If the APU is shutdown during single engine taxiing, can the operating engine provide air to both packs?
-Is the ant-ice (wings and engine) is used during single or lower engine(s) taxiing if icing conditions exist? Since the shutdown or the dead engine is not anti-iced engine, can this cause a real problem?
-In certain icing conditions like freezing drizzle, I guess an engine run procedure is required where the engine is revved up to 70% N1 every 30 minutes during taxiing. Are there other similar procedures in icing conditions?
Since the engine must be turned up to 70% N1, it means idle ground is not enough to shed the ice. Does it mean that shutdown engine (in single or lower engines taxiing) will be iced up by the freezing drizzle?
-"In case of freezing drizzle, it seems that the use of engine anti-ice during taxiing is not very efficient since the engine run procedure (70% N1 or more every 30 minutes) in case of freezing drizzle."
What are your comments or opinions on this statement, please?
-Besides single engine taxiing, what are the guidelines provided by the airlines to the flight crew regarding the reduction of the aircraft operating cost? (fuel consumption...)
Any feedback(comment, opinion,...) is very appreciated. Thank you.
Best regards.