What must pilots check regarding AFTO Form 781 before conducting any aircraft inspection?

Before conducting any aircraft inspection, pilots must check the accuracy of the AFTO Form 781. This form is crucial as it contains essential information about the aircraft's status, including discrepancies, maintenance actions, and inspections that have been performed. Ensuring the accuracy of this form is vital for safe operation, as it helps pilots understand any maintenance or operational issues that may affect the flight. If the information on the form is incorrect, it could lead to unsafe flight conditions or regulatory non-compliance.

The relevance of the other options lies in their importance during flight operations, but they do not take precedence over verifying the accuracy of the AFTO Form 781. Weather conditions, aircraft fuel levels, and maintenance history are all important considerations, but they pertain more to flight planning and operational readiness rather than the immediate verification steps required before an inspection.