Final answer:
Hot defueling is a process where fuel is removed from an aircraft while the engine is still running, which is not allowed for all aircraft types due to safety and design constraints. Identifying the specific aircraft that does not permit hot defueling requires consulting the respective operating manuals or regulations for each aircraft model.
Step-by-step explanation:
The question "Hot defueling is approved for all of the following aircraft except________." pertains to a specific procedure in aircraft operations, particularly around fuel management. Hot defueling is a process where fuel is removed from an aircraft while the engine is still running or hot. This procedure is not universally approved for all aircraft due to various safety concerns and design limitations. Determining which aircraft does not permit hot defueling requires access to specific aircraft operating manuals or regulatory documents that detail such procedures. Typically, commercial airliners and certain military aircraft might have the required systems and protocols to allow hot defueling, but general aviation aircraft and certain types of helicopters may not support this due to the increased risk of fire or system damage.