orientation sensor

hi
i'm planing on constructing little flight recorder for RC plane.
the thing should read pitch, yaw and roll few times a second and save it on sd card along with RTC reading.
i have everything pretty much nailed, but i'm not sure what kind of orientation sensor to use.

can you guys recommend something that would give me 3 axis reading with 360 degree range without beiong affected by changes in speed?

Look for rate gyros. There are a lot with different interfaces and ranges. Often they are in conjunction with accelerometers and magnetic compass,