Originally Posted by
Gonzo
Yes, let's ignore the level busts and near-level busts caused by N. American-based crews hearing 992(mb/hpa) and entering 29.92(in) (or similar), let alone the many every U.K. controller has caught at the readback stage.
If you would give links to airporox reports where this has occurred I'd be pleased to reconsider.
The unit added on to the number is immaterial. If a US crew were going to set inches, would it Hectopascal, rather than 'millibar' or 'smarties' really have saved the day?