Which statement about the DME flashlight is true?

Which statement about the DME flashlight is true?

• A. It lasts 15 minutes
• B. It lasts 30 minutes to 4 hours
• C. It lasts 5 hours
• D. It lasts 1 day

Answer: (B)

Emergency flashlights on aircraft are designed to provide light during power loss or an evacuation, and their endurance is given as a range to account for different battery types and usage modes. For the DME flashlight, you’d expect it to operate from about thirty minutes up to four hours depending on the battery installed and whether it’s used at low or high brightness. This range ensures there’s enough light to guide people to exits during an evacuation while not draining the battery too quickly. The other times don’t fit typical emergency-light specifications: fifteen minutes is too short for a complete evacuation, five hours is longer than standard for these devices, and lasting a full day isn’t feasible with onboard emergency-battery designs.

Emergency flashlights on aircraft are designed to provide light during power loss or an evacuation, and their endurance is given as a range to account for different battery types and usage modes. For the DME flashlight, you’d expect it to operate from about thirty minutes up to four hours depending on the battery installed and whether it’s used at low or high brightness. This range ensures there’s enough light to guide people to exits during an evacuation while not draining the battery too quickly. The other times don’t fit typical emergency-light specifications: fifteen minutes is too short for a complete evacuation, five hours is longer than standard for these devices, and lasting a full day isn’t feasible with onboard emergency-battery designs.