What was found
DURING CLIMB ON FLAP RETRACTION, THE NR 4 LEADING EDGE FLAP WOULD NOT RETRACT. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED NR 4 LEADING EDGE FLAP ACTUATOR AND SHUTTLE VALVE, OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB ON FLAP RETRACTION, THE NR 4 LEADING EDGE FLAP WOULD NOT RETRACT. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED NR 4 LEADING EDGE FLAP ACTUATOR AND SHUTTLE VALVE, OPERATIONAL CHECK OK.