As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF DURING GEAR RETRACTION, NOSE GEAR INDICATED DOWN. RECYCLED GEAR BUT INDICATION REMAINS IN THE DOWN POSITION. RETURNED TO RDM. INSPECTED NOSE GEAR AND PERFORMED GEAR SWING. COULD NOT DUPLICATE DISCREPANCY. SYSTEM OPS CHECKS GOOD. LUBED GEAR UP ROLLER.