Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Aircraft X; ZZZ-ZZZ1; on decent into ZZZ1 at about 7;000 feet the gear warning audio went off 'landing gear-landing gear-landing gear' in a very loud tone in both headset and speaker. A quick troubleshooting of the system showed #2 radar altimeter 0 feet to -5 feet and #1 normal for 7;000 feet (hidden) no CAS message or other evidence of a fault. Left us with no direction for check list. We tried selecting the gear override switch but that was of no help silencing the audio. In my 35 years at this airline I have experienced many in flight emergencies including 5 engine failures however never in all those experiences has it been so hard to concentrate on dealing with the problem with the continued very loud 'landing gear-landing gear' over and over with no way to turn it off. It was also very evident to the forward flight attendant and most likely front half of the aircraft passengers. When we have a fire we get multiple warnings but we can silence the audio warning wile we work the problem. The other part that bothers me from a safety standpoint is we have two radar altimeter systems #1 and #2 if both are in agreement that's one thing but in this case only one was faulty. We should not get to this level of alarm during a disagreement or miss-comparison. I propose that we find a solution or fix so in the future crews can have an option in some way to silence this type of warning after they have acknowledged the problem. In our case we lowered the gear to silence the warning; this might not always be the best course of action.
Captain reported extending the landing gear to silence a continuous Landing Gear aural warning.