Can the landing gear aural warning be silenced by pressing the LG WRN INHIB button?

• A. Only if both radio altimeters have failed and flaps set 0-4
• B. Only when the aircraft is on the ground with weight on wheels
• C. At any time with the switch pressed
• D. Only during takeoff

Answer: (A)

The landing gear aural warning is not a universal mute; it’s tied to multiple signals to avoid masking a real hazard. The LG WRN INHIB switch is a safety-locused mute that only works under a specific fault condition: when both radio altimeters have failed and the flaps are in the 0–4 range. In that situation, the system can’t reliably determine altitude, so a nuisance warning could occur as you approach the ground. Silencing it then lets crews focus on other cues (like gear position indicators and flap status) without ignoring a potential gear issue. Outside of that exact condition, pressing the switch won’t silence the warning because the system relies on altitude and gear data to decide when the horn is warranted.