As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO LAS FROM SLC WITH THE PATIENT ON BOARD. LEVELED OFF FL230 AND A MINUTE LATER THE FUEL PRESSURE LOW L INDICATOR CAME ON. WE (DAVID HALE AND SIC RICK JONES) FOLLOWED THE CHECKLIST WITH THE USE OF THE L STANDBY BOOST PUMP AND RETURNED TO SLC.”