As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, LEFT FUEL BOOST PUMP ANNUNCIATOR ILLUMINATED WITH NO ASSOCIATED LOW FUEL PRESSURE WARNING. CREW RETURNED TO DEPARTURE. LANDING WAS UNEVENTFUL. STERLING MOUNTAIN TROUBLESHOT TO K21 RELAY STICKING. REPLACED K21 AND K23 RELAYS. OPS CHECK GOOD.