How many redundant systems are there on a Commercial Airliner?

what is the best answer to

Question by torque1224: How many redundant systems are there on a Commercial Airliner?
How many redundancies are there on the various vital systems (Hydraulics, avionics, engine ECU, fuel pumps??)


Best answer:

Answer by Jayson
Well it depends on which manufacturer of the airplane is. When you say comeercial airliners those includes new generation Boeings, Enchance Airbuses and even the old McDonnell Douglas airplaines and more.... meaning old and new planes. If this is the way your goes I would say vital systems varies from 2 to 5 redundancies depending on its reliability. You may want to ask more specific next time so that i can give you more specific answer. Glad to help.

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