B737-800
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 198
Distraction; Communication Breakdown; Human-Machine Interface
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Flight Crew Regained Aircraft Control; Flight Crew Became Reoriented
Human Factors
I was Pilot Flying on turn to final over FAF for the runway. Aircraft overshot and I was correcting back to course; speed was set to flaps 40 target while still at flaps 15 airspeed aircraft 'Airspeed' alert sounded as I corrected back to line up on final I looked down and saw airspeed at 138 as it approached the first red dot on the Mach Air Speed Indicator; I pushed the thrust levers forward and leveled the aircraft as the stick shaker momentarily shook the column. After aircraft accelerated back on speed; I called for landing flaps 40 and flew the remainder of the approach to landing uneventfully.
[Report narrative contained no additional information.]
B737-800 flight crew reported allowing the aircraft to slow below target speed for flap setting while maneuvering on final approach.