What was found
KMIA - KMCO CREW REPORTED AFTER DESCENDING TO FL 270 FELT ACFT YAW TO LEFT. PARTIAL LT T/R DEPLOYMENT, NO WARNING INDICATION RECEIVED. AIRSPEED REDUCED & LT & RT T/R EMERGENCY STOW BUTTONS ACTIVATED. LT ENG SHUT DOWN, ACFT LANDED. MX INSPECTED LT T/R & FOUND I/B ACTUATOR NOT LOCKING IN STOWED POSITION. T/S A FAULTY STOW MICROSWITCH FOUND. LT I/B STOW MICROSWITCH REPLACED & RIGGED. LT T/R CYCLED SEVERAL TIMES, NO DEFECTS. SYS FUNCTIONALLY & OPERATIONALLY CHECKED NORM. LT T/R, ENG, AFTERBODY MOUNT FLANGE & ENG MOUNTS WERE VISUALLY INSPECTED WITH NO DEFECTS. RIGGING CHECKS OF CONTROL ARMS, STOW STOPS, AND SWITCHES COMPLETED. ALL RIGGING CHECKS GOOD. ACFT RETURNED TO SERVICE.