In article SwnOg.22694$SZ3.9372@dukeread04,
"Jim Macklin" wrote:

Every airplane with flaps has speed limits with flaps
extended. If there is a positive stop, they may have a
series of allowable speeds.

Why do you say "positive stop"? I think you're talking about:

*23.1511***Flap extended speed.

(a) The flap extended speed VFE must be established so that it is‹

(1) Not less than the minimum value of VF allowed in 23.345(b); and

(2) Not more than VF established under 23.345(a), (c), and (d).

(b) Additional combinations of flap setting, airspeed, and engine power
may be established if the structure has been proven for the corresponding
design conditions.

I don't see anything there that mandates a "positive stop".