Checking non-routine closures against a component-history source file

When this review is needed

• A shop visit generated a stack of non-routines against the component and the register shows them all closed within days of redelivery.
• The trace file quotes a defect as repaired, yet nobody has located the disposition that authorized the repair.
• A buyer's technical team has asked for corrective-action evidence on specific register lines.
• Two registers exist for the same visit, one from the operator and one from the shop, and they do not agree on what was closed.

The problem

Closure pressure at the end of a check is real: findings raised early get careful dispositions, findings raised in the final week get signatures. A register can therefore look clean while several of its lines were closed against verbal engineering guidance, a disposition filed elsewhere, or a corrective action described in three words. For a serialized part, one unsupported closure is enough to undermine the whole defect history.

What gets reviewed

• Every non-routine raised against or adjacent to the subject component across its documented shop visits
• The finding text compared with the disposition to confirm they describe the same defect
• Corrective actions traced to the task cards, materials, and sign-offs that executed them
• Engineering dispositions and repair references confirmed present and applicable
• Register status codes reconciled with the underlying card closures
• Deferred non-routines checked for a documented transfer into a controlled deferral system

What gets validated

• Each closed register line points to a disposition document that exists in the source file
• Corrective actions cite the approved data or engineering reference they were worked to
• Sign-off identities on non-routine closures match personnel who signed the related routine cards
• Findings involving part replacement connect to a removal record, an installation record, and a release certificate
• No register line was closed by administrative action alone where physical work was described

Evidence normally required

• The non-routine register for each shop visit in the component's history
• The individual non-routine cards, including continuation sheets
• Shop findings reports and engineering dispositions referenced by the cards
• The component-history source file with its release certificates and movement records
• Any deferral log that absorbed non-routines not closed at the visit

Common discrepancies

• A defect signed closed while the disposition that authorized the repair is nowhere in the file
• Corrective-action text too thin to establish what was actually done to the part
• Register lines marked closed whose underlying cards still show open steps
• A finding deferred at the visit with no entry in any deferral system afterward

What is at stake

Left unexamined, those weak closures surface exactly when the component trades. A counterparty who finds a defect signed off without its clearing evidence will assume the worst about the condition of the part, extend the same suspicion to the routine work, and either discount the asset or walk. Recovering disposition records years later, from a shop that may have re-platformed its system, is slow and sometimes impossible.

How the work runs

What the buyer receives

• An exception register listing each unsupported closure and the evidence needed to cure it
• A defect-history summary for the component suitable for inclusion in the trace file
• A prioritized recovery list identifying which organization should hold each missing document

Who uses the output

• Component records leads deciding whether the defect history can go in front of a counterparty
• Reliability and quality staff investigating repeat findings on the same part
• Lessor technical teams pricing the risk carried by unsupported closures

How the work fits into the transaction or program

Defect history is the layer of a component trace that counterparties probe hardest, because it speaks to condition rather than configuration. This review runs alongside the task-card and shop-report checks in the same source review, and its exception register drives the document recovery effort before the trace file is released.

Jurisdiction-specific considerations

FAA guidance in AC 43-9C treats the description of work performed as the substance of a maintenance record, so a closure whose corrective action cannot be reconstructed fails the record's purpose. On the EASA side, Part-145 organizations certify that work was carried out per approved data, which makes a missing disposition a gap in the certification chain, and Part-CAMO holders inherit the duty to keep that chain reviewable.

Regulatory limits

This is a records exercise. It does not reopen findings, direct rework, or determine whether a repaired component is airworthy, and it issues no approvals. Judgments about the technical adequacy of a disposition remain with the design and maintenance organizations that hold that authority.

What this review does not cover

• Engineering assessment of whether a disposition was technically correct
• Inspection of the component to confirm the repair described
• Negotiating with shops or prior operators for the missing documents

Specific to this review

• The ratio of non-routines to routine cards is a fast credibility test: a heavy check with a near-empty register usually means findings were recorded somewhere the file does not reach.
• Dispositions issued verbally and papered later are a known end-of-check pattern; the giveaway is a disposition date after the closure signature date.
• A non-routine that replaced a part is really three records in one, and the register line stays weak until the removal, installation, and release are all locatable.
• Shop-side and operator-side registers diverge most on findings deferred at redelivery, which is exactly where auditors look first.

Sources

Frequently asked questions

Relevant glossary terms

Related pages

Where this fits