http://www.airliners.net/photo/Icelandair/Boeing-757-208/1388951/L/&sid=f4a489bf98e199e47bd178c97ac5266c

Hvort sýnir hæðarmælirinn hæðina frá nefinu eða stélinu ?
“A superior pilot uses superior judgement to avoid situations which might require the use of his/her superior skills”