As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH SELECTED LANDING GEAR DOWN, NO GEAR INDICATION. RETURNED TO DEPARTURE AIRPORT, MANUALLY PUMPED LANDING GEAR DOWN GOT TWO GREEN MAIN GEAR LOCKED ANNUNCIATOR. NO NOSE GEAR ILLUMINATED ON LANDING SHUTDOWN AND FEATHERED BOTH ENGINES. TROUBLESHOT LANDING GEAR SYS AND FOUND EMERGENCY EXTENSION HAND PUMP TO NOT BUILD PRESSURE. REPLACED HAND PUMP ASSY. LANDING GEAR OPS CHECK GOOD.