As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAE - FLT 3828 - DURING ROUTINE SCHEDULED C-12 MAINTENANCE CHECK WHILE ATTEMPTING TO LAND, GROUND PROXIMITY COMPUTER CONTINUALLY GAVE FALSE 'GEAR UNSAFE' WARNINGS. TROUBLESHOT AND FOUND G.R.W.S. COMPUTER AT FAULT. REMOVED AND REPLACED COMPUTER AND FUNCTIONAL CHECKED GOOD PER MM 34-42-11. (X)