I doubt the crew would know about a decreased pressurisation rate. I don't know about Airbus, but in the Turboprop I fly, if one of the doors is leaking, the outflow valve in the rear auto closes to ensure that the cabin rate remains the same for the phase of flight.
Unless the leak was greater than the pressurisation system could 'pump up' the cabin, there would be no indication of any fault.
Last edited by Max C; 8th January 2014 at 07:38 PM.
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