During transit, aircraft seats or survival kits with explosive devices installed must contain

• A. Emergency lighting
• B. First aid kit
• C. Required safety pins and devices
• D. Spare parts

Answer: (C)

The essential idea is preventing accidental initiation of explosive devices during transport. When explosive devices are installed in aircraft seats or survival kits, they must be kept in a safe, unarmed state while in transit. This is achieved with safety pins and arming/disarming devices. The safety pin keeps the device from arming, and authorized personnel can only arm or disarm it using the proper devices and procedures, which also provides a tamper/condition check. This combination ensures the explosive remains inert until the correct handling steps are taken.

Emergency lighting helps during an evacuation but doesn’t address explosive safety. A first aid kit or spare parts are unrelated to preventing initiation of explosives.