As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AFTER START CHECKLIST "STBY HYD 1" GAUGE DID NOT SHOW PRESSURE. RECYCLED SWITCH, STILL NO PRESSURE. BROUGHT THE FLAPS UP, NR 1 SHOWED FULL PRESSURE. RECYCLED SWITCH, SHOWED NO PRESSURE. MAINTENANCE INSPECTED AIRCRAFT CONTACTOR BOX WIRING FOR ANY NOTICEABLE CHAFING OR LOOSE CONNECTIONS. NO DEFECTS NOTED. GROUND RAN AIRCRAFT, CYCLED NR 1 STANDBY HYDRAULIC PUMP SWITCH AND CYCLED FLAPS. ALL INDICATIONS CHECK NORMAL. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.