Weight & balance
Embraer E-Jet weight-and-balance records review
This review confirms that the current weight-and-balance statement for an Embraer E-Jet follows from its weighing history and every equipment change made since. It is run before a transaction or after a cabin change, when the statement in use has to be shown to reflect the aircraft as configured. It checks the last actual weighing, the amendments applied for each equipment change and modification, and the arithmetic that carries the empty weight and center of gravity forward. You receive an exception list of unsupported or missing amendments, a source map to the weighing reports and change records, and a plan to reconcile the statement to the configuration.
When this review is needed
- An E-Jet is changing hands and the current weight-and-balance statement has to reconcile to the aircraft as configured.
- A cabin reconfiguration changed the equipment fit and the empty weight and center of gravity have to be amended.
- The last actual weighing is old and the buyer wants the intervening amendments checked before relying on the statement.
- Equipment was added or removed under a modification and the weight change was never carried into the statement.
The problem
A weight-and-balance statement drifts one amendment at a time. An E-Jet gets a cabin change, a piece of avionics is swapped, a modification adds structure, and each event should push a weight and moment change into the running statement, but the amendment that captures it is easy to skip. The statement then reads current while the empty weight and center of gravity it carries no longer match the aircraft, and because the number is used every day it is trusted rather than checked against the configuration behind it.
What gets reviewed
- The most recent actual weighing report and the empty weight and moment it established
- Amendments applied for each equipment change, modification, and configuration change since
- The arithmetic carrying empty weight and center of gravity forward through each amendment
- The current weight-and-balance statement reconciled to the recorded configuration
- Equipment additions and removals under modifications reflected in the statement
- Loading and configuration documents consistent with the statement in use
Scope this review
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What gets validated
- The current empty weight traces back to the last actual weighing through supported amendments
- Each equipment change and modification that affects weight has a corresponding amendment
- The center-of-gravity figure follows from the recorded moment changes, not a carried-over value
- The statement matches the equipment list and configuration records for the serial number
- No modification that added or removed mass is absent from the amendment history
Evidence normally required
- The current weight-and-balance statement in use
- The most recent actual weighing report
- The amendment history for equipment changes and modifications
- The equipment list and configuration records for the aircraft
- Modification records that added or removed mass since the last weighing
Common discrepancies
- A modification that changed the equipment fit with no matching weight-and-balance amendment
- A current empty weight that cannot be traced back to an actual weighing through the amendments
- A center-of-gravity figure carried forward without the arithmetic that supports it
- A statement that does not match the equipment list for the serial number
What is at stake
A statement that does not reflect the configuration understates or overstates the empty weight the operator plans against, and reconciling it late in a transaction can require a fresh weighing on a schedule that does not allow one. An amendment skipped at a modification leaves the weight change untraceable, so the buyer cannot confirm the statement is right and prices the uncertainty. A center-of-gravity figure carried forward through unsupported arithmetic undermines every loading decision built on it.
Move from findings to resolution
Move from findings to a documented resolution path.
How the work runs
Anchor to the weighing
Establish the last actual weighing and the empty weight and moment it set.
Walk the amendments
Follow each equipment change and modification forward and confirm the matching amendment.
Reconcile to configuration
Check the current statement against the equipment list and modification records.
Flag the gaps
List missing or unsupported amendments and state whether a re-weigh is needed.
What the buyer receives
- An exception list of missing or unsupported amendments in the statement history
- A source map tying the current statement back to the weighing report and each amendment
- A plan to reconcile the statement to the configuration, including whether a re-weigh is needed
Who uses the output
- Asset managers confirming the statement reflects the aircraft they are pricing
- Records teams reconciling the statement to the equipment list and modification history
- Continuing-airworthiness teams relying on the empty weight and center of gravity in use
How the work fits into the transaction or program
The weight-and-balance review sits alongside the equipment-list and modification reviews, because the same changes that alter the configuration should alter the statement. It runs before a transaction or after a cabin change, and its exceptions feed the reconciliation, or a re-weigh, that has to close before the statement can be relied on.
Aircraft-specific considerations
E-Jets are reconfigured in the cabin more often than most narrowbodies of similar age, and cabin changes are exactly the events that move empty weight and center of gravity, so the statement drifts fastest where these aircraft are changed most. Galley, seat, and monument changes each carry a weight and moment that should appear as an amendment, and the review traces the statement through those changes rather than accepting the running empty weight as settled.
Jurisdiction-specific considerations
The format and the required content of a weight-and-balance statement differ between an FAA context and an EASA one, so a statement acceptable on one register may need reformatting or supplementary documentation for the other. The review notes where the statement as held will need rework for the receiving system.
Regulatory limits
The review confirms the statement is internally supported and reconciles to the configuration. It does not weigh the aircraft, approve a weight-and-balance amendment, or determine that the aircraft is airworthy at the recorded weight.
What this review does not cover
- Physically weighing the aircraft or producing a new weighing report
- Approving or issuing a weight-and-balance amendment
- Any airworthiness determination based on the recorded weight or center of gravity
Specific to this review
- The statement is trusted precisely because it is used daily, which is why an unsupported amendment can persist unchallenged for years.
- A skipped amendment at a modification leaves no trail: the statement reads current, but the weight change it should reflect is untraceable.
- On an E-Jet the cabin is the fastest source of drift, because galley and seat changes each carry a moment the statement should capture.
- Reconciling a drifted statement late in a transaction can require a fresh weighing on a schedule that does not allow the aircraft to come out of service for one.
- A center-of-gravity figure carried forward through unsupported arithmetic undermines every loading decision built on it, even when the empty weight happens to be right.
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.
Frequently asked questions
The statement is current. Why check the amendments behind it?
A statement stays current on its face even when an amendment was skipped, because the running empty weight and center of gravity are simply carried forward. The review traces those figures back to the last actual weighing through every equipment change, so you can rely on the statement rather than assume the amendments were all applied.
Relevant glossary terms
Related pages
Where this fits
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