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46 The PCB Magazine • September 2016 FOD Awareness Area: Fabrication or main- tenance areas within the facility where manufac- turing or maintenance requires specific actions. FOD Awareness Area controls: • Clean as you go • FOD barriers on all open lines and tubes when not in use • FOD barriers on all electrical connectors when not in use FOD Sensitive Area: Assembly areas where a foreign object could become entrapped or in- accessible within components where mainte- nance requires specific actions. FOD Sensitive Area controls: • Clean as you go • FOD barriers on all open lines and tubes when not in use • FOD barriers on all electrical connectors when not in use • No food or drinks in area, water is acceptable • FOD barriers on inlets and vents when not in use • Identify the area with clearly visible markings FOD Critical Area: Areas which contain an aircraft major assembly or in which the as- sembly /disassembly of engines or critical com- ponents occur, or a flight line. Any area where flight hardware is in place and exposure to for- eign objects would potentially cause a system or product failure due to deterioration, malfunc- tion or damage. FOD Critical Area controls: • Clean as you go • FOD barriers on all open lines and tubes when not in use • FOD barriers on all electrical connectors when not in use • No food or drinks in area; water is acceptable • FOD barriers on inlets and vents when not in use • Identify the area with clearly visible markings and controlled entry/exit point • Remove items in pockets above the waist, with the exception of pockets that seal, before contact with the aircraft • Inventory loose items on belt as a tool (cellphone, pager, etc.) FOD Program Controls and Implementation AS9100 requires that manufacturers have a FOD program implemented, and Boeing has provided the following guidelines for what needs to be included [2] . Training The primary objective of a FOD prevention training program is to increase employee aware- ness to the causes and effects of FOD, promote active involvement through specific techniques, and stress good work habits through work disci- plines. A FOD prevention training program for employees associated with design, development, manufacturing/maintenance, assembly, test, op- erations, repair, modification, refurbishment, and maintenance is required as part of initial job orientation and on a continuing basis. Training subjects include: • Proper storage, shipping and handling of material, components, and equipment • Techniques to control debris • Housekeeping • Cleaning and inspection of components and assemblies • Accountability/control of tools and hardware • Control of personal items, equipment and consumables • Care and protection of end items • Quality workmanship ("clean-as-you-go," inspection) • Flight line, taxiway and ramp control methods • How to report FOD incidents or potential incidents Housekeeping Maintenance, manufacturing/maintenance and operational areas must remain clean. Employees should be informed that housekeep- ing is a part of their job and they will be grad- FOD AND THE AEROSPACE INDUSTRY