Final answer:
FAA regulations under part 91, subpart F require the presence of at least one hand fire extinguisher on airplanes accommodating 5 passengers, accessible to both crew and passengers. Additional carrier rules pertain to service animal conduct and space allocation.
Step-by-step explanation:
Under the regulations of part 91, subpart F, for an airplane accommodating only 5 passengers, there are specific requirements for carriage and availability of fire extinguishers. According to FAA regulations, the operator must ensure that there is at least one hand fire extinguisher located in a convenient place in the cabin, which is readily accessible to the flight crew and passengers. While these requirements are in place to ensure safety during flight, carriers also have additional regulations regarding service animals on board such as the need for service animals to be harnessed, leashed, or tethered at all times in the airport and on the aircraft. Furthermore, airlines are allowed to limit one passenger to two service animals and require that a service animal fits within its handler's foot space on the aircraft.