The term 'bootstrap', when used to identify a cabin air conditioning and pressurisation system, refers to the:

Question

Question ATPL - Airline Transport Pilot license - Aircraft General Knowledge - Airframe, Systems, Powerplant

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Cold air unit (air cycle machine) arrangement.

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Means By Which Pressurisation Is Controlled.

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Source of the charge air.

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Charge air across the inter-cooler heat exchanger.

Id 162 - ATPL - The term 'bootstrap', when used to identify a cabin air conditioning and pressurisation system, refers to the: