As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AND GEAR HANDLE SELECTED TO THE GEAR RETRACTION POSITION. NOSE GEAR RETRACTION MOVEMENT WAS FELT AND HEARD. 2 RED MAIN GEAR LIGHTS (NO NOSE LIGHT) ALONG WITH A RED FLASHING HANDLE LIGHT OCCURRED. REMOVED AND REPLACED LT & RT MLG PROX SWITCHES AND INSTALLED NEW LT & RT MLG PROX SWITCHES PER MM 32-311 AND ACCOMPLISHED OPS AND LEAK CHECKS PER MM 32-300 WITH ALL OPS NORMAL NO FURTHER DEFECTS NOTED