As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE UPON EXTENSION FOR APPROACH. NOSE WAS DOWN AND LOCKED. BOTH MAINS REMAINDED UP. AFTER ABOUT 45 SECONDS, BOTH MAINS EXTENDED AND LOWERED DOWN AT THE SAME TIME. (FLT 5606) REPLACED LANDING GEAR SELECTOR VALVE AND ACMP 3A IAW AMM. P/N ON 848847 S/N OFF MX636745.