Which statement describes the first aural warning condition for landing gear that cannot be silenced?

Which statement describes the first aural warning condition for landing gear that cannot be silenced?

• A. SLAT/FLAP lever in 0, 1, 2, 3, or 4; Radio altitude below 700 ft AGL; Thrust lever below mid-range
• B. SLAT/FLAP lever in 5 or FULL; Radio altitude below 700 ft AGL; Thrust lever below mid-range
• C. SLAT/FLAP lever in 0-4; Radio altitude above 700 ft AGL; Thrust lever above mid-range
• D. SLAT/FLAP lever in 0-4; Radio altitude below 200 ft AGL; Thrust lever low

Answer: (A)

The warning system is using three cues to decide when to sound the unsilenceable alert as you approach landing: flap/slat configuration, radio altitude, and thrust lever position. The first non-silenceable aural warning occurs when you’re in the approach/landing regime (low altitude) and the aircraft isn’t configured for a normal landing with the gear status potentially unsafe. Specifically, if the flap/slat lever is not in the landing configuration (not at full landing position, i.e., 0–4), you are below about 700 ft radio altitude, and the thrust levers are not in a go-around or climb range (below mid-range), the system marks a high enough risk that it must warn you and cannot be silenced until you address the gear and configuration. This combination signals that time is short and a correct landing configuration isn’t established, so the crew must verify or set the gear down and locked and ensure the airplane is in an appropriate landing configuration. Why the other scenarios aren’t the first unsilenceable condition fits: if the flaps are already at full/5 (or FULL), that indicates a landing configuration is present, so the unsilenceable warning for gear isn’t triggered in the same way. If the radio altitude is above 700 ft, you’re not in the critical low-altitude window yet, so the warning wouldn’t be treated as the first unsilenceable alert. If the radio altitude is extremely low (below 200 ft) but the other cues don’t align with the first unsilenceable gating, the system would escalate differently rather than matching this initial condition.

The warning system is using three cues to decide when to sound the unsilenceable alert as you approach landing: flap/slat configuration, radio altitude, and thrust lever position. The first non-silenceable aural warning occurs when you’re in the approach/landing regime (low altitude) and the aircraft isn’t configured for a normal landing with the gear status potentially unsafe. Specifically, if the flap/slat lever is not in the landing configuration (not at full landing position, i.e., 0–4), you are below about 700 ft radio altitude, and the thrust levers are not in a go-around or climb range (below mid-range), the system marks a high enough risk that it must warn you and cannot be silenced until you address the gear and configuration. This combination signals that time is short and a correct landing configuration isn’t established, so the crew must verify or set the gear down and locked and ensure the airplane is in an appropriate landing configuration.

Why the other scenarios aren’t the first unsilenceable condition fits: if the flaps are already at full/5 (or FULL), that indicates a landing configuration is present, so the unsilenceable warning for gear isn’t triggered in the same way. If the radio altitude is above 700 ft, you’re not in the critical low-altitude window yet, so the warning wouldn’t be treated as the first unsilenceable alert. If the radio altitude is extremely low (below 200 ft) but the other cues don’t align with the first unsilenceable gating, the system would escalate differently rather than matching this initial condition.