As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK, WHEN L/G WAS SELECTED TO UP ON TAKEOFF, RED NOSE GEAR INTRANSIT LIGHT REMAINED ON. RED LIGHT REMAINED ON IN BOTH POSITIONS, GEAR VISUALLY CHECKED DOWN AND LOCKED. REMOVED AND REPLACED DOWNLOCK PROX SENSOR S846 AND CARD M1215, OPS CHECKED GOOD. RECOMENDATION: MONITOR A/C HAS NO HISTORY 90 DAY SNAPSHOT.