Which of the following Cessna 182 models requires an approved flight manual?

The requirement for an approved flight manual in specific aircraft models is typically linked to the introduction of advanced avionics and other significant design changes that affect performance and operating specifications. In the context of the Cessna 182 models mentioned, the 182R is noteworthy for its inclusion of enhanced systems and increases in performance metrics, which necessitate greater pilot awareness and adherence to specific operating procedures outlined in an approved flight manual.

The transition from earlier 182 models to later versions like the 182R reflects improvements in safety, efficiency, and technology, thereby requiring pilots to have access to an officially approved flight manual that provides essential information on the aircraft's limitations, operating procedures, and emergency protocols. This ensures that pilots operate the aircraft effectively within its endorsed parameters, promoting safety and compliance with regulatory standards.

Other models, such as the 182A, 182L, and 182S, may not have the same regulatory requirements for an approved flight manual due to differences in their design and technology, which do not impose the same operational constraints or adjustments that the 182R necessitates. Hence, the 182R specifically stands out for its requirement for an approved flight manual.