As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER INCIDENT ON 12/21/2021 AT KBCT. PER REQUEST AIRCRAFT WAS JACKED AND FUNCTIONAL CHECKS (GEAR SWINGS) WERE PERFORMED ON THE AIRCRAFT. AFTER MULTIPLE FUNCTIONAL CHECKS (GEAR SWINGS) IT WAS FOUND THAT THE NOSE GEAR WOULD NOT LOCK OUT AND A GRINDING NOISE WAS HEARD COMING FROM THE LANDING GEAR ACTUATOR ASSEMBLY (PN: 0894000-4, SN: UNKNOWN).