As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE CREW REPORTED THAT AFTER GEAR RETRACTION THE GEAR UNSAFE ANNUNCIATOR REMAINED ILLUMINATED, THE HYD PRESS ANNUNCIATOR REMAINED ILLUMINATED FOLLOWED BY A STAB MIS COMPARE WARNING ANNUNCIATOR. THE LG WAS RECYCLED & THE FAULT CLEARED. TROUBLESHOOTING IDENTIFIED THE NLG UPLOCK SWITCH, S3 PN 65-430087 TO BE DEFECTIVE. THE SWITCH WAS R & R WITH A NEW UNIT. RIGGING WAS COMPLETED & THE ACFT WAS RETURNED TO SERVICE.