As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON GEAR EXTENSION, NO THREE GEAR GREEN OR RED GEAR UNSAFE LIGHTS. FOLLOWED ABNORMALS (GEAR RECYCLE), CONTACTED MAINTENANCE CONTROL. INSTRUCTED TO PULL AND RESET LANDING GEAR WARNING CIRCUIT BREAKER. ALL INDICATIONS THEN WERE NORMAL FOR LANDING. REMOVED AND REPLACED 5 AMP LANDING GEAR WARNING CIRCUIT BREAKER (B1-187). SYSTEM OPS CHECKED GOOD IAW DC9 AMM 32-60-00-0-0101.