Probably for proprietary reasons, it is difficult to quickly determine
what units of measurement airplanes are designed in. I did find some
interesting links, though.
This interesting page provides cargo specifications for several aircraft
in both "U.S. Standards" and "Metric Standars". Of course, that says
nothing about the units the aircraft were designed in.
http://www.nwa.com/services/shipping/cargo/aircraft.html
Airbus provides a page of gross specifications on their A330/A340 family
in both "metric" and "imperial" units.
http://www.airbus.com/en/aircraftfamilies/a330a340/a330-200/specifications.html
A discussion thread I found is interesting. One poster claims (2/15/08
4:07 PM) that Boeing went metric starting with its 767 series. Another
poster asserts (2/15/08 05:38 PM) that Airbus planes have a switch to
select metric or non-metric readouts on its flight panels.
http://uplink.space.com/showflat.php?Cat=&Board=missions&Number=883054&page=0&view=collapsed&sb=5&o=0&fpart=
Jim
--
James R. Frysinger
632 Stony Point Mountain Road
Doyle, TN 38559-3030
(H) 931.657.3107
(C) 931.212.0267
