In the standard for Spare Aircraft Procedures, what must the IP do when stepping to a spare?

When stepping to a spare aircraft, the responsible individual, typically the instructor pilot (IP), is required to check the AFTO Form 781. This form is essential for ensuring that all maintenance and operational discrepancies are documented and reviewed before flight. The AFTO Form 781 contains important information about the aircraft's status, any previous issues, required inspections, and overall readiness for operations. This ensures that the spare aircraft is safe and compliant with all regulations before being utilized for a mission.

While checking fuel levels, running engine diagnostics, and notifying air traffic control are important tasks in various flight operations, they are not the primary focus when preparing to step into a spare aircraft according to the standard procedures outlined. Verifying the AFTO Form 781 is a critical step that addresses maintenance history and operational safety, directly tying into the responsibility of the pilot to operate an airworthy aircraft.