Which of the following is NOT listed as a lavatory smoke sign?

Which of the following is NOT listed as a lavatory smoke sign?

• A. ACP Flashes Amber
• B. AIP Flash Red Light
• C. Light outside flashes amber
• D. Sound of alarm

Answer: (D)

Lavatory smoke detection signals use visual indicators to alert crew and pinpoint the location. When smoke is detected, the system prompts an amber flash on the ACP, a red light on the AIP, and an amber flash from the exterior lavatory light. These signs are designed to be quickly and easily seen by the crew, even in low visibility. An audible alarm is not listed as a lavatory smoke sign in this context, so the sound of an alarm is not considered one of the indicators for lavatory smoke.

Lavatory smoke detection signals use visual indicators to alert crew and pinpoint the location. When smoke is detected, the system prompts an amber flash on the ACP, a red light on the AIP, and an amber flash from the exterior lavatory light. These signs are designed to be quickly and easily seen by the crew, even in low visibility. An audible alarm is not listed as a lavatory smoke sign in this context, so the sound of an alarm is not considered one of the indicators for lavatory smoke.