Servicing

Base maintenance servicing can be scheduled or not scheduled such as procedures to clean, adjust, align, calibrate, inspect, etc.

Clean and apply surface protection (250): the procedure and data necessary to remove contamination mechanically, chemically or with ultrasonic. The code also gives procedure to: apply paint.

• Clean with chemical agent (251): the removal of surface deposits from a part, component, or Product by use of a chemical cleaning agent. The chemical agent dissolves or loosens the deposit, which is washed or rinsed away after a soaking period.

• Purge (255): the procedure necessary to remove contamination (unwanted materials) from a system, equipment, or component.

• Other procedure to clean (258): the procedure necessary to remove contamination which is not covered by other information codes

Adjust, align and calibrate (270): the procedure and data necessary to adjust, align or calibrate a system, equipment or component.

• Adjust (271): the procedure to adjust a system, equipment, or component to a serviceable condition.

• Align (272): the procedure to align a system, equipment, or component to a serviceable condition.

• Calibrate (273): the procedure to calibrate a system, equipment, or component to make sure it is serviceable.

Inspection (280): the maintenance and overhaul inspections necessary to keep a Product, system, equipment or component serviceable. Inspections starting at 600 flight hours / 1 years and beyond, as well as all landing cycles and calendar-based inspections, are classified as base maintenance inspections due to the complexity and equipment required.

• Scheduled inspection (281): the maintenance and overhaul inspections necessary to keep a system, equipment or component serviceable. The inspections are done to a schedule at a specified time given by the manufacturer. The manufacturer also gives the lives of equipment, components, items, or parts.

• Special regular inspection (283): the maintenance inspections necessary to keep a system, equipment or component serviceable. They are special inspections at the time given by the manufacturer which cannot be included in a schedule (eg, landing cycles, when the fuel cell is removed or replaced, anytime an opening occurs to the Free Wheeling Unit oil supply system, or when the engine oil is replaced).

• Special irregular inspection (284): special irregular inspections do not occur frequently and cannot be included in a schedule (eg, heavy landing inspection, lightning strike inspection).