"NEG" indication below altitude window
Thread Starter
Joined: May 2005
Posts: 50
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From: Singapore
"NEG" indication below altitude window
Hi folks, on the A330 PFD, there are times when the indication "NEG" will appear just below the altitude window. What exactly does this indication entail?
Thank you
Thank you
Joined: Mar 2001
Posts: 1,064
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From: Either the back of a sim, or wherever Crewing send me.
Now, I’m not type rated on ANY Airbus aeroplane, nor have I ever been, but even I reckon that I know the answer to this one. I take it you were at airports that are below sea level when it appears??
Joined: Nov 1999
Aviation Qualifications: ATPL
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From: UK
To answer the OP, this commonly happens at airports (near sea level elevation) if the atmospheric pressure has increased since the previous crew left the aircraft. The QNH they set before they landed now gives an altitude below sea level, and this is highlighted with the ‘NEG’ caption.
Joined: Sep 1998
Posts: 1,615
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From: wherever
(my bold). Play nicely Draco...... It might be obvious to you but not the OP, hence why they are asking the question. (They might not be a pilot).
To answer the OP, this commonly happens at airports (near sea level elevation) if the atmospheric pressure has increased since the previous crew left the aircraft. The QNH they set before they landed now gives an altitude below sea level, and this is highlighted with the ‘NEG’ caption.
