As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT OF SLC HYDRAULIC ''LOW LEVEL'' LIGHT GAUGE SHOWED IN YELLOW TRENDING TO EMPTY. ALSO ''LOW PRESS H'' ON HYDRAULIC PANEL. RETURNED TO SLC FOR NORMAL LANDING, GEAR AND FLAPS OPS NORMAL. REPLACED LEFT ENGINE DRIVEN HYDRAULIC PUMP IAW 29-10-03. SERVICED GREEN SYSTEM HYDRAULICS AND CYCLED RELATED SYSTEMS. OPERATION, INDICATION, AND LEAK CHECKS GOOD.P/N: P3-022-29 S/N ON: MX-525985 S/N OFF: MX-470913