As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSP - FLT 3327 - IN CRUISE FLIGHT, LEFT HYDRAULIC PRESSURE ANNUNCIATOR LIGHT ILLUMINATED. THE AIRCRAFT RETURNED TO MSP. MAINTENANCE REPLACED LEFT ENGINE HYDRAULIC PUMP AND PRESSURE SWITCH. SYSTEM OPERATED SATISFACTORILY. SWITCH, PN SS1012-7. (X)