FOD PREVENTION PROGRAM GUIDE · PART IV: RESPONSE AND INVESTIGATION
FOD Finding Response and Disposition Codes
Every piece of foreign object debris found on a walk needs a predictable response. A five-step sequence and a set of six FOD disposition codes, D1 to D6, decide what happens to the item and who gets involved. This article explains both, along with how to handle items held for investigation.
Finding debris is only the start. What you do in the next few minutes determines whether that finding becomes useful data or a lost opportunity. The guide describes a controlled response sequence that depends on the item’s hazard and location, and its consistency is what turns individual findings into organizational learning. Everything below covers routine findings, meaning debris discovered before it caused damage. Damage events follow a different protocol, described in FOD incident response.
The Five-Step Response Sequence
- Isolate and assess. Do not touch, move, open, smell, test or bag an item if it could be sharp, a battery, chemical, biological, an unknown powder or liquid, suspected ordnance or any other hazardous item. Where it is safe to do so, keep people back, mark or cordon off the spot, and alert the area leader plus whichever safety, hazmat, security or emergency function is responsible. Only a trained, authorized person can confirm the item is safe to collect, and once they have, it goes into the designated collection container. Items headed for investigation get a separate, sealable bag labeled with date, time, location and finder, never mixed with general trash. If the item is photographed, contain it after the photo, not before.
- Document. Log the finding immediately rather than at the end of the walk, because details that are vivid at discovery are hazy 30 minutes later. The minimum record is time, location, item description, quantity, category code, probable source if known, disposition code and a photograph where permitted.
- Classify. Assign the category code at the time of logging. The finder knows what the item looked like and where it came from, and deferring classification loses that knowledge. See the FOD classification system for the categories.
- Dispose or escalate. The disposition code decides the next action.
- Trend. The logged finding enters the trend dataset, and the program owner reviews it daily or weekly depending on volume to spot repeat patterns and emerging hotspots.
The Findings Log
The guide uses a simple FOD collection and findings log with columns for time, location, item and quantity, category and source, disposition code and owner. A typical entry might read a small piece of safety wire in one bay, categorized as hardware, disposition D1, with a second washer in the same bay coded D3 because its origin is unknown. Our FOD inspection form follows this layout, and it works well alongside a FOD walk checklist.
FOD Disposition Codes D1 to D6
Disposition codes are short, standardized answers to the question of what happens to this item next. The guide defines six:
- D1: Disposed as trash. The item is non-hazardous, not a tool, not a suspected part and not a repeat finding warranting investigation. No follow-up is needed and it goes to general waste.
- D2: Returned to tool control. The item is an identifiable tool or tool component. Tool control logs the return, checks for missing-tool reports and investigates why the tool was in the area. This links directly to your tool control program.
- D3: Held for investigation. The item warrants further analysis, for example a suspected part, a repeat finding, an unknown origin or a possible process implication. It is bagged, tagged and stored, and the investigation is assigned to the appropriate function such as quality, safety, maintenance or engineering.
- D4: Work order generated. The item is facility deterioration or a condition that needs maintenance. A work order is created and the FOD log references its number.
- D5: Safety or quality escalation. The item represents an immediate or significant safety or quality risk. It is escalated per site procedures and may trigger a formal investigation or stop-work.
- D6: Customer or authority notification. The item may require notice to a customer, regulator or other external party under contract or regulation. Notify only by following your organization’s external communication protocol.
Note how D1 is a deliberately narrow code. If there is any doubt that an item is a tool, a part or a repeat, use a different code.
Evidence Handling for Items Held for Investigation
When an item is dispositioned D3, treat its condition at the time of finding as evidence:
- Bag and tag immediately in a clean, sealable plastic bag labeled with date, time, location (as specific as possible), finder name, log entry number and a brief description.
- Do not clean the item. Oil, dirt, paint transfer or biological material may all have diagnostic value.
- Do not alter the item. Do not straighten bent items, fit broken pieces together or remove adherent material.
- Store securely in a designated, access-controlled location, not a desk drawer.
- Photograph with scale. Take a photo in place with a ruler or coin before bagging, and another after bagging with the label visible.
Put the Right Containers Where Findings Happen
A clean response process starts with the right equipment in reach. Labeled FOD cans give D1 items a clear destination, and separate FOD bags keep suspected-investigation items apart from routine debris. Repeat D3 findings in the same zone should feed the repeat FOD investigation worksheet and then the corrective action tracker.
The full chapter, including the log template, is inside the free guide. Download the FOD Prevention Program Guide to put a standard response in front of every walk team.
Get the Complete FOD Prevention Program Guide
216 pages, 48 chapters and a 17-form toolkit plus an Excel tracker, free from FODBag.com.
Frequently Asked Questions
What are FOD disposition codes?
They are six standard codes, D1 to D6, that record what happens to a found item: disposed as trash, returned to tool control, held for investigation, work order generated, safety or quality escalation, or customer or authority notification.
When should a FOD finding be held for investigation?
Use D3 when the item is a suspected part, a repeat finding, of unknown origin or has a possible process implication. Bag and tag it, do not clean or alter it and store it securely.
When should an item not be touched?
If it could be sharp, a battery, chemical, biological, an unknown powder or liquid or suspected ordnance, keep people clear and notify the responsible function until a trained person confirms it is safe.
Shop FOD Prevention Products
Put this guidance into practice with products built for FOD control.
