Boeing 767 deferrals
Boeing 767 family deferred-maintenance records review
This review reconciles the deferred-maintenance position on a specific Boeing 767 so open and cleared items can be trusted. It is run for a lessor, buyer, or operator who needs to know that every deferral is within its limit, correctly categorized, and either open with a plan or closed with evidence. It covers the deferred-maintenance log, MEL and CDL references, deferral categories and limits, and the corrective actions that cleared past items. You receive a reconciled deferral list, an exception list where an item lacks a basis or a closure, and a plan to resolve the open findings.
When this review is needed
- A 767 is transferring operators and the deferral log has to be clean before the new operator accepts it.
- A redelivery is approaching and open deferred items must be resolved or handed over with a documented plan.
- A deferral appears to have run past its category limit and the position needs to be established.
- A cleared item lacks the corrective-action evidence that would close it in the records.
The problem
Deferrals live in a fast-moving log that captures line decisions under dispatch pressure, and the paper trail behind each one is thin. A 767 that has passed through several operators carries MEL and CDL references written against different revisions, deferrals that were extended without a clear basis, and cleared items whose corrective work never made it back into the log. The records team inherits a list where it cannot tell which items are genuinely open and which were closed but never documented.
What gets reviewed
- The deferred-maintenance log reconciled to open and cleared status for the serial
- MEL and CDL references confirmed against the operator's applicable revision
- Deferral categories and time or cycle limits checked for each open item
- Corrective actions matched to the deferrals they were meant to clear
- Repetitive or extended deferrals traced to the basis for their extension
- Handover-item candidates identified for any deferral that cannot close before transfer
Scope this review
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What gets validated
- Each open deferral cites an MEL or CDL item and category that applies to this aircraft's configuration
- Deferral limits are within their category and any extension has a documented basis
- Every cleared deferral has a corrective-action record that closes it
- Repetitive deferrals show the interim actions their category requires
- The log's open-item count agrees with the operator's technical-log and status summaries
Evidence normally required
- The current deferred-maintenance log and any open-item summary
- The applicable MEL and CDL revisions for the operator
- Corrective-action records and work orders for cleared deferrals
- Technical-log entries where deferrals were raised or cleared
- The transfer or redelivery conditions governing acceptable open items
Common discrepancies
- Deferrals carried open past their category limit with no documented extension basis
- Cleared items in the log with no corrective-action record behind the closure
- MEL references written against a revision the operator no longer uses
- Repetitive deferrals missing the interim inspections their category requires
What is at stake
An unresolved deferral position blocks acceptance and delays a transfer. A deferral past its limit is a live compliance problem, and a cleared item with no corrective evidence is a gap that reopens at the next audit. The receiving operator will not take an aircraft whose open-item status it cannot verify, so unclosed deferrals hold up the deal until they are reconciled.
Move from findings to resolution
Move from findings to a documented resolution path.
How the work runs
Establish the open list
Pull the current deferred-maintenance log and reconcile it against the technical log and status summaries.
Test each deferral
Confirm the MEL or CDL basis, the category, and the limit for every open item.
Close or challenge
Match cleared items to their corrective evidence and flag any closure that lacks a record.
Plan the residual
Deliver the reconciled list, exceptions, and a plan for items that carry over to handover.
What the buyer receives
- A reconciled deferral list showing verified open and cleared status for the serial
- An exception list for items past limit, mis-categorized, or lacking a closure
- A resolution plan and a set of handover candidates for deferrals that cannot close in time
Who uses the output
- Operators deciding what open items they will accept on transfer
- Records teams closing deferrals with the evidence each one requires
- Asset managers confirming the deferral position before a redelivery or sale
How the work fits into the transaction or program
Deferrals are the airframe's live open-work list, and they sit directly on the path to acceptance. Reconciling them turns a noisy log into a clean statement of what is genuinely open, which the receiving operator can accept and the current operator can close. This review pairs with the airworthiness-review and redelivery-binder checks, since open items surface in all three and have to agree.
Aircraft-specific considerations
A 767 that has served multiple operators carries MEL and CDL histories written under different programs, and freighter operation adds cargo-system items that a passenger MEL never addressed. Older serials also accumulate long-standing repetitive deferrals whose interim actions are easy to lose, so the review scopes to this aircraft's operator history and configuration rather than a generic 767 deferral pattern.
Jurisdiction-specific considerations
MEL structure and deferral categories are tied to the operating rules the aircraft has flown under, so an FAA-operated 767 and an EASA-operated one categorize the same item differently. The review records which framework each deferral was raised under so the receiving operator can map it into its own MEL.
Regulatory limits
This review reconciles the deferral records and reports where items lack a basis or a closure. It does not clear any deferral, grant or extend any deferral limit, and does not make a dispatch or airworthiness determination.
What this review does not cover
- Physical rectification of any deferred item
- Approval or extension of a deferral limit
- Any dispatch decision on an open item
Specific to this review
- A deferral past its category limit is a live finding, not a paperwork gap, because the aircraft is carrying an item it is no longer entitled to defer.
- Cleared items with no corrective evidence are common because rectification happens in a work order that never links back to the deferral log.
- Repetitive deferrals hide the real exposure: the open item is minor, but the missed interim inspection it depends on is the actual risk.
- Freighter-configuration deferrals against a passenger MEL revision do not map cleanly and have to be recategorized before the log can be trusted.
Sources
U.S. Government (eCFR). Maintenance recordkeeping content and approval-for-return-to-service requirements, including 43.9, 43.11, and Appendix B.
U.S. Government (eCFR). Records an owner or operator must keep, including total time in service, current status of life-limited parts, and AD compliance.
European Union / EASA. Continuing airworthiness, maintenance records, CAMO responsibilities, and the airworthiness review process in the EASA system.
International Civil Aviation Organization. International standards for aircraft operation, including maintenance program and recordkeeping expectations.
Frequently asked questions
How do open deferrals affect a redelivery?
Most lease returns cap the number and category of open items the receiving party will accept. Reconciling the log first shows which deferrals are genuinely open and within limit, so the parties negotiate against a verified list instead of discovering surprises during acceptance.
Relevant glossary terms
Related pages
Where this fits
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