As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR INDICATED UNSAFE UPON GEAR RETRACTION AFTER ALT GEAR EXTENSION CHECK. AFTER CYCLING NOSE GEAR INDICATED UNSAFE BOTH UP AND DOWN AML NR 865177. *S/D* REMOVED AND REPLACED INSULATION BLANKET, WIRING BUNDLE AND NOSE LAND GEAR LOCK SENSOR TARGET.