As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF NOSE GEAR WOULD NOT RETRACT. UNLOCK LIGHT REMAINED ILLUMINATED AND NOSE GEAR CONTINUE TO CYCLE IN THE WELL. WOULD NOT LOCK. CYCLING PRODUCED LOUD BANGING NOISE. LOWERED LANDING GEAR - EVERYTHING NORMAL. ADJUSTED NLG SQUAT SWITCH TO SPEC IAW MM 32-60-00. OPS CHECKED GOOD.