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S3C8 - FOREIGN OBJECT CONTROL
Table of Contents
1. In order for aircraft and aeronautical product to operate safely and economically throughout their service life, they must be maintained and operated to their highest standards. However, all forms of maintenance and the operation of equipment have the potential to introduce foreign objects.
2. Damage can be caused to engines, propellers, helicopter rotors, by ground debris and other loose matter being thrown up during engine running, taxying, and hovering. This damage is known as Foreign Object Damage (FOD), the acronym is used as a general term to describe all ground debris and other loose matter. To minimise the potential risk of damage, great care is to be exercised in keeping runways, taxiways, hard stands, flight decks and all work areas clear of loose matter.
3. This chapter prescribes the AMO responsibilities and procedures to be followed to effectively manage foreign object control.
FOREIGN OBJECT DESCRIPTION
4. Foreign objects are limitless in variety and include the following:
DANGERS ARISING FROM THE PRESENCE OF FOREIGN OBJECTS
5. The dangers resulting from the ingress or presence of foreign objects can include the following:
6. The type of construction employed and the increasing degree of complexity of systems and installations results in a reduction in access, increases the ease with which foreign objects can be concealed, and increases the difficulty of effectively inspecting for their presence.
FACTORS IN FOREIGN OBJECT CONTROL
7. To prevent foreign object problems, there must be a preventive system in place, and all personnel must be aware of the issues surrounding Foreign Object Control (FOC). In particular, an awareness of the possible consequences of the presence of foreign objects in aircraft and aircraft technical equipment in respect to the hazards to life, impairment of operational effectiveness and expenses incurred in repair must be established and maintained.
FOREIGN OBJECT CONTROL RESPONSIBILITIES
8. Commanding Officers (COs) must ensure that a suitable FOC programme is promulgated in the Maintenance Management Plan (MMP). Lower level information can be promulgated in local instructions, as required.
9. The AMO must ensure that:
10. All maintenance personnel are to ensure that tools, support equipment, materials and other foreign objects are removed from the work areas during and on completion of maintenance tasks, or at any time a foreign object is detected. Maintenance personnel are to maintain awareness/vigilance in actively looking for foreign objects and FOD at all times.
11. FOC checks must be performed by all personnel involved in the performance, supervision and inspection of any maintenance task. There is no requirement for a separate maintenance task entry in the recording and certification system for a FOC check, as certification of all maintenance tasks encompasses the requirements of FOC. Notwithstanding, a separate FOC check may be called for at any time, recorded and certified as a separate maintenance task.
FOREIGN OBJECT AWARENESS
12. The AMO must have a nominated representative responsible for foreign object awareness. This need not be a stand alone appointment, the duties may be combined with other AMO appointments, eg Quality Manager, MM responsible for Deeper Maintenance (DM). However, Foreign Object awareness and associated problems must be regularly reviewed and considered by AMO senior management.
13. The CO is to ensure foreign object awareness is promoted by appointing foreign object awareness representative from maintenance. Where possible, a Pilot, Navigator/Observer or Flight Engineer are to be nominated to assist the representative and to promote foreign object awareness amongst the aircrew.
14. The function of the foreign object awareness representative is to:
15. To avoid duplication of effort and to ensure the widest possible coverage of the subject, the activities of the foreign object awareness representative is to be coordinated with those of the Workplace Health and Safety Committee or other suitable regular management meetings wherever possible.
FOREIGN OBJECT CONTROL CHECKS
16. FOC checks are required when compartments are about to be hidden from view or sealed off. If a tool, consumable or other item has been used to perform maintenance in an area to be concealed a FOC check is required.
17. FOC checks consist of a thorough visual inspection of the area to be concealed to ensure that it is free from foreign objects. As such, all maintenance personnel must have an appreciation of the maintenance that was performed in the subject area and the tooling and consumables utilised, prior to performing the FOC check.
18. Upon completion of the FOC check, the area inspected must be subject to no further maintenance and closed.
19. In addition to the above, contaminated fuels, lubricants and other fluids present a potential foreign object hazard which is generally referred to as ‘contamination’. Maintenance personnel must ensure that:
PROMULGATION OF INFORMATION
20. This chapter relates to the framework for foreign object control in AMOs. MMPs or local instructions are to give specific details pertinent to local needs and requirements. An example of the content and layout of a FOC local instruction is shown in Annex A.
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