DC-10 30
Flight Crew Air Transport Pilot (ATP)
Troubleshooting; Human-Machine Interface
Aircraft Equipment Problem Critical; Deviation - Speed All Types
Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft
We were descending through 3;000 FT MSL on final on a visual approach backed up by ILS. Slats were extended and airspeed was stable at 190 KIAS; which was approximately 30 KTS above the lower foot. We then had two intermittent stick shaker events; perceived at two seconds each. I called for 15 flaps; but the First Officer initially could not move the flap handle. By further effort; including moving the dial-a-flap wheel forward and aft; he was able to get the flap handle to move from 0 degree flap position to 15 degrees. Further flap extensions were uneventful and we completed a normal landing with 35 flap. We then notified maintenance and wrote the problem up in the AML.
A DC-10 flight crew experienced two stick shaker events with slats extended.  They encountered mechanical resistance to their initial attempts to position the flap handle to 15 degrees. Subsequent attempts allowed positioning of flaps and they landed normally.