Which document would contain performance data for an aircraft?

The Pilot Operating Handbook (POH) is the primary document that contains comprehensive performance data for an aircraft. It provides critical information such as takeoff and landing distances, weight and balance computations, fuel consumption rates, and engine performance specifications. This data is essential for pilots during pre-flight planning and allows them to understand the aircraft's capabilities and limitations under various conditions.

The POH is specific to each aircraft model and is tailored to that aircraft’s configurations, making it the most reliable source for performance information. It helps pilots make informed decisions regarding flight operations, both in terms of safety and efficiency.

Other documents listed, like the Aircraft Maintenance Manual, are focused on maintenance procedures and guidelines more than on performance data. A Flight Planning Guide may assist in navigation and other aspects of flight management but will not contain detailed aircraft performance data as found in a POH. The Airworthiness Certificate simply indicates that the aircraft meets safety standards but does not provide specific performance metrics.