Records & configuration
Weight-and-balance records review
A weight-and-balance records review confirms that the aircraft's current empty weight and center of gravity are supported by the last weighing and by every configuration change recorded since. It is used before a purchase, a lease return, or after a major modification. It checks that the current weight statement reflects each modification, the equipment installed and removed, and the method by which the values were derived. You receive a reconciled weight-and-balance trace, the changes that were never carried into the statement, and the evidence needed to close each gap.
When this review is needed
- A major modification or interior change has altered the empty weight and the statement needs confirming.
- A buyer wants the current weight and balance figures traced to the last weighing and the changes since.
- A return references a current, supported weight statement and the lessor needs it verified.
- An aircraft has accumulated incremental changes without a fresh weighing and the cumulative effect is unclear.
The problem
Empty weight and center of gravity drift as equipment is added and removed, but the weight statement is only as current as the last amendment someone actually made. A modification can change the weight without an entry, equipment can be removed without a credit, and incremental changes can accumulate until a weighing is overdue. A statement that looks authoritative can rest on a baseline that no longer matches the aircraft.
What gets reviewed
- The current empty weight and center of gravity and their stated basis
- The last actual weighing and the values it established
- Each modification and equipment change recorded since the last weighing
- The arithmetic linking the baseline weighing to the current statement
- Equipment additions and removals reflected as weight and moment changes
- Any operational margin or limit the statement is built to support
Scope this review
Tell us the asset, the event, and the evidence in scope, and we will outline a focused first engagement.
Send a representative, redacted record set and we will scope the review.
What gets validated
- The current statement traces to a recorded weighing through documented changes
- Each modification affecting weight has a corresponding weight and moment entry
- Equipment removed is credited and equipment added is captured in the statement
- The arithmetic from baseline to current empty weight is internally consistent
- The interval since the last weighing is within any applicable program requirement
Evidence normally required
- The current weight and balance report and its amendment history
- The last actual weighing record and its conditions
- Modification and equipment change records since the weighing
- The equipment list as it stands and as it was at the baseline
- Any program requirement governing reweighing intervals
Common discrepancies
- A modification that changed the weight without a statement amendment
- Equipment removed from the aircraft but never credited in the statement
- A current empty weight that does not reconcile with the last weighing and the changes
- A weighing that is older than the program interval allows
- Arithmetic in the statement that does not close against its own change entries
What is at stake
An empty weight that does not reflect the installed configuration affects loadable payload and the margins the operator plans against. In a transaction, a weight statement that cannot be traced to a weighing and the changes since forces a reweighing before the figures can be relied on, which is slower to arrange after the deal than before.
Move from findings to resolution
Move from findings to a documented resolution path.
How the work runs
Fix the baseline weighing
Identify the last actual weighing, the empty weight and center of gravity it established, and the conditions it was taken under.
Collect changes since
Gather every modification and equipment addition or removal recorded after the weighing that should have moved weight or moment.
Reconcile the arithmetic
Walk the statement from the baseline through each change and confirm the current empty weight and moment close against the entries.
Call the gap or reweigh
List changes missing from the statement, then recommend whether the figures hold or a fresh weighing is due.
What the buyer receives
- A reconciled weight-and-balance trace from the last weighing to the current statement
- A list of changes missing from the statement with the weight effect identified
- A recommendation on whether the statement can be relied on or a reweighing is due
Who uses the output
- Continuing-airworthiness teams confirming the statement is current
- Flight operations relying on the empty weight for load planning
- Acquisition and asset teams confirming payload assumptions
How the work fits into the transaction or program
The review supports a pre-purchase, a redelivery, or post-modification closure by confirming the weight statement reflects the aircraft. It feeds the configuration section of a discrepancy register and the decision on whether a reweighing is needed.
Jurisdiction-specific considerations
Weighing intervals and statement conventions differ between operating rules and authorities. Where the aircraft will change registries, the review notes where the statement format or interval will need to meet the receiving authority's expectations.
Regulatory limits
The review confirms that the weight statement is complete, consistent, and traceable to a weighing and the changes since. It does not weigh the aircraft, recompute its certified limits, or make an airworthiness determination.
What this review does not cover
- Physical weighing of the aircraft
- Recomputation of certified weight or center of gravity limits
- Any airworthiness determination on the aircraft
Specific to this review
- Empty weight drifts with every equipment change, so a statement is only as current as the last amendment someone actually entered.
- Equipment removed without a credit is a common failure mode, because additions tend to be recorded more reliably than removals.
- A statement can be arithmetically correct yet still wrong if it was built on a baseline weighing that predates uncaptured changes.
Sources
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.
U.S. Government (eCFR). Maintenance recordkeeping content and approval-for-return-to-service requirements, including 43.9, 43.11, and Appendix B.
European Union / EASA. Continuing airworthiness, maintenance records, CAMO responsibilities, and the airworthiness review process in the EASA system.
Frequently asked questions
Can you confirm the aircraft is within its weight limits?
The review confirms the statement traces to a weighing and reflects the configuration changes. It does not recompute the certified limits or determine compliance; that rests with the operator and the type data.
Relevant glossary terms
Related pages
Where this fits
Talk to an engineer who has done this work
We will walk through your current state, the records or evidence involved, and a scoped first engagement.
Walk through your situation with an engineer who has done this work.