As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT: 9279 DURING APPROACH, LANDING GEAR WOULD NOT EXTEND. MANUALLY EXTENDED LANDING GEAR. LANDED WITHOUT INCIDENT. FOUND LANDING GEAR GROUND SERVICE VALVE IN THE UP POSITION PLACED IN THE DOWN POSITION. LANDING GEAR EXTENSION AND RETRACTION OPERATIONAL CHECK GOOD.