As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 4151 - WHEN SELECTING GEAR DOWN, CREW DID NOT RECEIVE A SAFE GEAR INDICATION. CONDUCTED A FLY BY TOWER TO ENSURE GEAR WAS DOWN. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED BULBS IN LANDING GEAR POSITION INDICATOR. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)