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Thread: QNH 999 hPa?
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Old 22nd Oct 2019, 11:52
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DaveReidUK
 
Join Date: Jan 2008
Location: Reading, UK
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Originally Posted by chevvron
I presume this must have arisen as a result of an incident sometrime in the past when someone actually did this.
Pan Am 707, Calcutta (as was), 1968.

And probably others.
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