Small slice duration parameter added to blend_parameters. Increased from default 4 sec to 10 sec to ignore small sections of apparently valid radio altimeter data.
CL-600 AOA test added to cover specific correction for that type.
Airspeed minus flap manoeuvre speed for 3 sec - code added with test.
Touchdown algorithm extended to cater for Saab 3000 special case (no mainwheel switches recorded, but flaps retract when they touch the ground).