The diving hose that connects the regulator to the tank's pressure gauge can separate reducing the available air supply to the diver, posing a drowning hazard.
The front assembly of the kickboards/scooters can break and the handle can detach or partially detach, causing loss of control or loss of balance. This poses a fall hazard to the rider.
Infant fatalities have occurred in the Rocking Sleepers, after the infants rolled from their back to their stomach or side while unrestrained, or under other circumstances.
The top portion of the tailwind rack that connects trailercycles to a towing bicycle can break and allow the trailercycle to disconnect, posing a fall hazard.