Originally Posted by
physicus
The most basic errors pprune users often make pertain to the basic information provided:
- Altitude is always from a barometric source, and always reported to standard pressure, i.e. it's a FL that's being reported. The resolution is bit encoding limited to 25ft.
Ahh.. No. Altitude is
not "always reported to standard pressure" - it's reported to the pressure the pilot enters into his altimeter as the QNH. In the flight levels that'll be standard pressure, but below these it will be referenced to whatever he selected, right or wrong. To do otherwise would be to imply a level of sophistication not found in most GA aircraft (and be just plain wrong at ground level anyways).
I'd say that's pretty basic error from a pprune user right there!!