As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 101 - KPDX-KDAY - DURING GEAR UPLATCH CHECK, GEAR NOT LATCHED LIGHT ON. CYCLED GEAR TWO TIMES FOR SUCCESSFUL CHECK. KDAY MAINTENANCE FOUND WIRE PIN ON LEFT GEAR UPLATCH STRIKER RECESSED. RESET PIN IN PLUG. UPLATCH TEST CHECKS GOOD IAW MM 32-30-0. (M)