Simon Chapman said on 25/3/2003: > >Cabin pressure in planes (at least in commercial planes) is kept to a > >equivalent of 8,000 feet or less: > >Which would be fine if the Apple spec referred to cabin pressure, but it >only refers to height. You've got a point here, but the Apple specs should really say "equivalent atmospheric pressure" or something like that. Take a look at this: <http://docs.info.apple.com/article.html?artnum=9504> The first paragraph says: "Macintosh PowerBook computers can be used in airplanes, provided the cabin is pressurized to a level of 3 000 m (10 000 feet) or less. Some models can be transported in airplanes with pressurization no higher than 4500 m. " Take care. -- Javier Pedreira "Wicho" <wicho at casaciencias.org> Museos científicos Coruñeses (=mc2) <http://www.casaciencias.org/> La Coruña, Spain 43°23'N 8°24'W