In which condition should rigging adjustments be performed?

Performing rigging adjustments while the aircraft is on a level surface and in its operational configuration is crucial for ensuring accurate alignment and functionality. This environment allows the rigging technician to assess the aircraft's systems in a real-world condition, effectively simulating the aircraft's performance as it would operate in flight.

Making adjustments in this scenario ensures that all components, such as control surfaces and flight systems, can be tested while under normal operational conditions, which is essential for safety and performance. The adjustments can be made with a clear understanding of how the aircraft will behave during actual flight, as any discrepancies can directly affect the aircraft’s handling and responsiveness.

Adjusting rigging on a moving surface or in non-operational configurations may introduce variables that can affect the accuracy of the adjustments or lead to additional complications, making it difficult to ascertain the effectiveness of any changes made. Therefore, ensuring the aircraft is stabilized, ideally level, and in its intended operational state provides a reliable basis for rigging adjustments.