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Old 22nd October 2009 | 03:44
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john_tullamarine
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: ATPL
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From: various places .....
Subject to the OEM's procedures, generally no. Reason being that the external airflow usually is associated with a lower than cockpit pressure. ie all you are likely to do is suck smoke from the cabin into the cockpit and out the DV.

Better, usually, to leave the cockpit sealed and increase cabin alt (or depressurise completely) and use the outflow valve to do what it does best ...
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