Which equipment should be placed in standby while personnel are working aloft?

• A. Lighting fixtures
• B. Radio transmitters, radars
• C. Life jackets
• D. Fire extinguishers

Answer: (B)

When people are working aloft, you want to minimize energy sources and unexpected actions near them. Radio transmitters and radars are large sources of RF energy and, in the case of radars, have moving parts that could operate unexpectedly or interfere with nearby equipment. Putting these devices in standby reduces the chance of accidental emissions or activations while someone is up high, and it allows a controlled, deliberate restart if communication or detection is needed during the task.

Lighting, life jackets, and fire extinguishers have clear safety roles that should remain active or readily accessible: lighting is needed for visibility, life jackets are essential personal safety gear, and fire extinguishers must be available for emergencies. Hence, the appropriate equipment to place in standby during aloft work is the radio transmitters and radars.