As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, UPON GEAR RETRACTION, THE NOSE GEAR DID NOT RETRACT AND THE RED UNLOCK LIGHT REMAINED ILLUMINATED. JACKED ACFT AND CYCLED NOSE GEAR, OPS CHECKED GOOD. LOWERED GEAR AND TURNED NOSE GEAR AND ATTEMPTED TO RETRACT. NOSE WOULD NOT CENTER OR RETRACT. VERIFIED NWS UNIT IS BAD IAW REP AT TEAM X. REMOVED AND INSTALLED O/H NWS UNIT IAW MM CH 32-50-00. C/W HYD SYS BLEED AND NOSE WHEEL STEERING RIGG CHECK IAW MM 32-50-00. GEAR SWING CHECKS GOOD AND TAXI CHECK GOOD.