To: Blacksheep and Zazoo
I feel like an absolute idiot. I performed the Reliability, Maintainability and Safety analysis on the Air Driven Hydraulic Pump used on the 767-400-ER while on contract to Fairchild Controls. I knew that this same type of unit was used on the 747 but I did not know it was used on other 767s, as Fairchild did not make it. At least, I never saw one in their repair shops. But being the idiot that I am, I didn’t even consider it when answering Zazoos’ question about the noise. It was my understanding that the unit was turned on during takeoff and landing and at all other times it operated on demand or, if the system malfunctioned.
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The Cat