• Critical FO: Foreign objects inadvertently left in areas inside of a component or aircraft from which migration is possible, e.g. through tooling holes, bend relief cutouts, drain holes, intakes, etc., which are probable to cause system or component malfunction or deterioration should the product be put into use.
• Foreign Object Elimination (FOE): a program or process used to assure a FOD-free product/system.
• FOD Prevention Program (FODPP): a program or process used to assure a FOD-free product/system.
• FOD Area Control Systems: FOD programs typically use a two level or three level set of controls for activities with different titles in work areas and on and around the aircraft. This document uses a three tier system. Users may adopt either one and name their systems as they wish. The system described in this document uses:
– FOD Awareness Area:
– FOD Sensitive Area:
– FOD Critical Area:
• FOD Awareness Area: Fabrication or maintenance areas within the facility where manufacturing or maintenance requires specific actions.
• FOD Awareness area controls:
– Clean-As-You-Go
– FOD barriers on all open lines and tubes when not in work
– FOD barriers on all electrical connectors when not in work
• FOD Sensitive Area: Assembly areas where a foreign object could become entrapped or inaccessible within components where maintenance requires specific actions.
• FOD Sensitive Area controls:
– Clean-As-You-Go
– FOD barriers on all open lines and tubes when not in work
– FOD barriers on all electrical connectors when not in work
– No food or drinks in area. Water is acceptable.
– FOD barriers on inlets and vents when not in work
– Identify the area with clearly visible markings
• FOD Critical Area: Areas which contain an aircraft major assembly or in which the assembly /disassembly of engines or critical components occur, or a Flight Line. Any area where flight hardware is in place and exposure to foreign objects would potentially cause a system or product failure due to deterioration, malfunction or damage 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：Foreign Object Debris and Foreign Object Damage (FOD) Prevention For Aviation Maintenance & Manufacturing(3)
