Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 167; Flight Crew Type 601
Distraction; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
Aircraft Equipment Problem Dissipated; General Maintenance Action
Environment - Non Weather Related; Aircraft
At 6;300 ft. MSL on the BENKY STAR; Runway 28C Transition; the landing gear warning horn; unsafe landing gear lights; and First Officer's RADALT gave intermittent false warnings. Two separate series of flashes separated approximately 20 seconds apart approaching the TONIE intersection. Uneventful landing. Wrote up discrepancy. Maintenance performed FMC Built in Test equipment check; DFCS (Digital Flight Control System) Built in Test equipment check; and CDS (Cockpit Display System) Built in Test equipment check. All checked good.
Air carrier Captain reported during arrival landing gear warnings and intermittent radar altimeter false warnings were received. Post flight maintenance checks did not find any system malfunctions.