The CCK/CCX-2000 AFM gives Maximum Flap Extend Speed Vfe as 84 mph / 73 knots. In the same section it states "Do not exceed the flap speed corresponding to a given setting". This statement appears to imply that each flap setting has a different limit speed but limit speeds are not provided for different flap settings.

Section 3.4.10 Emergency Descent says "IF DESCENT IS TO BE MADE USING FULL FLAPS, SLOW THE AIRPLANE TO 84 MPH IAS PRIOR TO FLAP EXTENSION AND PRIOR TO STARTING THE DESCENT. EXCEEDING THE FLAP EXTENDED SPEED CAN CAUSE DAMAGE TO THE WING STRUCTURE AND POSSIBLE FAILURE OF THE FLAP ATTACHMENTS."

This section implies there is no need to slow to flap limit speed if full flap will not be used for the emergency descent. How fast can one descend with partial flap?

It seems obvious that the structural flap limit speed will depend on flap setting. Was any flight test or structural analysis performed to establish limit speeds for each flap setting? If so, what are the limit speeds for each flap setting?

Thanks,

Andy