Hi john
If 4-per, then definitely way out of the sample rate. You have to sample at twice the maximum frequency you want to recover, that would be at least an order of magnitude faster than the actual FDR sample rate.
I'm sure there is yaw pedal position on the FDR, it comes (as for all the control axes) from the parallel trim actuator so is pilot's control position, ie without the effect of the series actuators or even collective mixing. On the 225 there is also the total control position (ie pilot + series actuator) but iirc this is not on the L2.
The AFCS is digital and does had some memory, but I think its limited to fault codes etc rather than a real-time data stream.
Last edited by HeliComparator; 19th Oct 2013 at 17:55.