Which item is NOT typically found in an onboard emergency kit?

The correct choice identifies an item that is not typically included in an onboard emergency kit. Emergency kits on aircraft are specifically designed for situations requiring immediate medical or safety interventions. First aid supplies and oxygen masks are essential components of these kits, serving critical roles in providing medical assistance and addressing situations involving cabin depressurization. Flotation devices are also commonly found on flights, as they are vital for emergency water landings, ensuring passenger safety.

Passenger comfort kits, however, are geared towards enhancing the overall passenger experience during a flight rather than addressing emergency situations. These kits often include items like blankets, toiletries, and entertainment materials, which are designed for comfort and convenience, not for emergency use. Thus, while they contribute to passenger satisfaction, they do not belong in the same category as the items in an emergency kit.