As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RED GEAR UNLOCK LIGHT WOULD NOT EXTINGUISH AFTER TAKEOFF. HAD NORMAL HYD PRESSURES AND PERFORMED THE ABNORMAL CHECKLIST FOR "GEAR UNLOCK LIGHT". GEAR EXTENDED NORMALLY AND RETURNED BACK TO AIRPORT. NO EMERGENCY DECLARED. TROUBLESHOT SYS, FOUND NLG DOORS OUT OF ADJUSTMENT. ADJUSTED NLG DOORS IAW MM 52-80-20. OPS CHECKED GOOD.