External Surveillance- A visual check that will detect obvious unsatisfactory discrepancies/ conditions in external structures and components, It may also apply to internal structure which is visible through quick opening access doors/panels. Ladders, work stands, etc may be required to gain proximity.
Internal Surveillance - A visual check that will detect obvious unsatisfactory discrepancies/ conditions in internal structures and components. This applies to obscured structure and installations which requires removal of fillets, fairings, access panels/doors, etc.
Non-destructive inspection (NDI)- Requires special techniques such as dye penetrant, eddy current, magnetic particle, etc, and may require disassembly procedures.
Other Structure Items inspection- shall consist of general visual inspection for external items and opportunistic maintenance for internal items. For internal item, inspection shall be when access is gained due to other maintenance.
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