A luggage QC report is an argument, not a verdict, and page one can read PASS while the defect log reads reject. Three numbers decide the lot: the sample size, the defect count and the critical-defect line. A buyer can check all three against the AQL table in under 60 seconds.
The reading discipline below applies to pre-shipment reports taken at AQL 2.5 and 4.0 sampling. The same discipline does not apply to first-article or sample-approval reports, which judge 1 unit against a drawing rather than a lot against a defect rate.
The Three Numbers That Decide the Lot
A pre-shipment inspection report runs 12 to 20 pages, and 3 numbers on those pages decide the outcome. Find the 3 before reading anything else, because each one constrains the next.
| Number | Where it appears | What it has to match | If it does not match |
|---|---|---|---|
| Sample size | Header block, beside the order quantity | AQL sampling table for that lot size at Inspection Level II — 2,000 units means 125 sampled | The sample was chosen for convenience, so everything below it is unverifiable |
| Defect count | Defect log, counted by class | Acceptance number for that class — AQL 2.5 accepts 7 major defects and rejects at 8, on 125 units | Recount from the log. A different total means the report has an arithmetic problem |
| Critical defects | Its own line, usually zero | Zero tolerance — 1 critical defect rejects the lot whatever the other 2 numbers say | A critical defect beside a PASS conclusion is internally contradictory, so stop and query it |
Read the table as a chain, not a checklist: the sample size validates the defect count. The count then validates the conclusion, and 1 critical defect overrides both.
Break any link and the verdict is not evidence of anything. A 2,000-unit order sampled at 125 units supports a statistical claim about the other 1,875 units.
A PASS That Should Have Been a Fail
The most expensive error in a luggage report is not a defective wheel. The real failure is a conclusion that does not follow from the numbers printed above it.
Take a 2,000-unit order at AQL 2.5 major and 4.0 minor, sampled at 125 units. The acceptance numbers are 7 major and 10 minor defects, and both belong in the purchase order.
If the log lists 9 major defects and the summary still says PASS, the report contradicts itself. The lot is a reject under the AQL 2.5 clause, whatever the summary says.
Reproducing the pass or fail from the AQL table takes about 60 seconds. A report that survives a 60-second recount is doing its job. A report that fails it needs the inspection worksheet, not a better summary.
The worksheet is the raw sheet filled in on the factory floor, and it cannot be rewritten later.
Zero Defects Is a Warning Sign
A 125-unit sample from a 2,000-unit run almost never contains zero minor defects. Real production carries scuffs, colour variation and uneven stitching, and AQL 4.0 exists to absorb those 3.
Can zero defects mean the inspection was faked?
Zero defects across every class raises one question: which cartons did the sample come from? Ask for the carton numbers, and only then compare them with the packing list.
A sample drawn from the first 10 cartons cannot support a claim about the remaining 1,875 units. The usual cause is a shortcut rather than fraud, and it costs the buyer the whole inference. The inspector is handed the cartons nearest the door, not a random draw from the run.
Reading the Defect Log, Not Just the Summary
The defect log is the only section that survives a dispute. The log is the only section that names individual units, which is what a claim needs.
| Class | Definition | Luggage examples | What 1 occurrence costs |
|---|---|---|---|
| Critical | Safety hazard or legal non-compliance | Sharp edge on a handle moulding, accessible battery compartment, restricted substance in a lining | The whole lot, at any AQL level — this class has zero tolerance |
| Major | Functional failure the customer will return | Wheel that wobbles or seizes, handle that will not lock, zipper that splits under load, shell cracked at a corner | Counted against AQL 2.5: 7 are tolerated on 125 units, the 8th rejects the lot |
| Minor | Cosmetic deviation the customer notices but rarely returns | Light scuff on a shell, slight colour variation between units, uneven stitch density | Counted against AQL 4.0 only when the purchase order names that level |
3 checks apply to every line, and the first is classification. Confirm whether the class follows the definition, not the inspector's convenience. A seized wheel logged as minor is not a minor defect, and it costs you the lot.
Confirm that each line carries a photograph with a unit identifier, not just a description. A defect described only in words cannot be verified once the container sails. Confirm whether the same description repeats across 3 batches, which points to a process fault rather than a batch fault.
What a Report Cannot Tell You
A QC report is narrower than a certificate of quality, in 3 specific ways.
A report is a sample, not a census, and 125 of 2,000 units means 6.25% of the order. The other 1,875 units are statistically similar rather than identical, and the sampling plan carries that inference.
Does a QC report prove the wheels will last?
A report measures 1 day in the factory, not a product life in the field. Drop tests, wheel mileage and handle fatigue are type tests on 3 to 5 prototypes. Type-test results sit in a separate file and are missing from the lot report more often than not.
A report audits the specification you wrote, not the product you intended. A purchase order saying PU caster wheels rather than a TPU grade is not a specification, and every inspection line can pass against it.
The Release Decision Is Yours, Not the Inspector's
Three outcomes exist, and only one of them is a clean yes.
Release the lot when the 3 numbers reconcile and every defect line carries a photograph. Release conditionally when the failures sit inside 3 identified units, and name those units in writing.
The factory reworks those units, and re-inspection covers only the reworked units. Reject when 1 critical defect appears, or when the major count exceeds the acceptance number.
Can I accept a discount instead of a rework?
A process fault rather than an accident makes the second case a reject, not a discount. Do not convert a failure into a discount, because the defective units ship anyway. A discount accepts the units at a lower price and does not fix the process behind them.
What to Send Us
If a report has arrived and the 3 outcomes are not obvious, send us the report and the AQL clause. Send the carton count from the packing list too, so the 125-unit sample can be checked against the lot.
If you do not have the AQL clause, send the purchase order itself. The level that matters is the one written into the contract, not the one the inspector prefers.
We will check the 3 numbers against each other and tell you what the document says. The answer may be that the report does not say enough, which is also a finding.
Where This Sits in the Quality Chain
Reading the report is the last step, and it works only when the earlier steps were specific. The 3-stage system the report audits is set out in quality control in luggage manufacturing.
The inspection itself, with the AQL table for lots from 51 to 1,200 units, sits in the pre-shipment inspection guide. The test data a report usually omits sits in the testing standards and certifications, which cover the 5 durability tests.
The specification the report is written against is covered in the factory chain control system, which names the 3 inspection stages by station.