Maintenance protocol deviation assessment, applicable to operators of all models. If, under reasonable unforeseeable circumstances, the maintenance inspection tasksderived from the MPD cannot be performed as planned or the operator expects tobedelayed, the operator may evaluate the requirements according to the airworthinessprovisions, and conduct the deviation assessment of some of the tasks in the MPD.

Conduct a technical evaluation on the deviation requirements of the customer'smaintenance inspection tasks under unforeseen circumstances during the executionof the regular inspection and maintenance, and assist the customer to confirmthedeviation feasibility of the relevant regular inspection and maintenance inspectionat the technical level.