Which of the following manuals is necessary for understanding operational limits?

The need for an Aircraft Flight Manual (AFM) arises from its critical role in providing detailed operational limits for the aircraft. The AFM contains essential data regarding weight limits, speed limitations, altitude capabilities, and other critical performance characteristics that pilots must understand and adhere to throughout various phases of flight. This manual serves as the primary reference for flight operations, ensuring that pilots operate the aircraft within safe boundaries.

In contrast to the AFM, the other manuals mentioned serve different purposes. The General Service Manual (GSM) typically contains information regarding systems maintenance and troubleshooting, which while important, does not focus specifically on operational limits. The Quick Reference Handbook (QRH) is primarily designed for in-flight reference and emergency procedures rather than detailing operational limits. The CODDE 2, while related to relevant systems or operational procedures, does not specifically provide the overarching operational limitations necessary for safe flying.

Thus, the AFM is indispensable for comprehensively understanding the operational limits that must be observed during flight.