787 weight and balance
Boeing 787 family weight and balance records review
This review checks the weight and balance records for a specific Boeing 787 family aircraft to confirm the current statement reflects every weighing, equipment change, and configuration amendment since the last basis. A records specialist runs it for the party operating or transferring the tail, often after cabin or equipment changes or before a deal. It reconciles the weighing reports, the running amendment history, and the modifications that shifted empty weight and center of gravity against the standing statement. You receive an exception list of unrecorded or unsupported changes, a source map from each amendment to its basis, and a closure plan for the corrections.
When this review is needed
- A cabin reconfiguration or equipment change on a 787 should have amended the weight and balance statement.
- The running amendment history and the current statement disagree on empty weight or center of gravity.
- A modification shifted weight but no corresponding amendment appears in the record.
- A buyer wants the weight and balance basis confirmed before relying on the operating figures.
The problem
Weight and balance is a running record: every equipment change and modification that shifts mass is supposed to amend the statement, and the amendments have to trace to a weighing or an approved calculation. On a widebody that has been reconfigured across operators, the amendment history can fall behind the modification record, so the standing statement reflects a configuration the aircraft no longer carries. An amendment applied without a supporting basis, or a modification that moved weight with no amendment at all, breaks the link between the physical aircraft and its operating figures.
What gets reviewed
- The current weight and balance statement reconciled to the last weighing basis
- Weighing reports checked for the method, date, and equipment condition at weighing
- Equipment changes and configuration amendments applied to the statement in sequence
- Modifications that shifted empty weight or center of gravity matched to an amendment
- The amendment history checked for continuity against the modification record
- Interior and equipment configuration at the last weighing reconciled to the current fit
Scope this review
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What gets validated
- The current statement traces to a weighing or an approved calculated basis
- Each amendment corresponds to a recorded equipment change or modification
- Every weight-shifting modification in the record has a matching weight and balance amendment
- The amendment sequence is continuous with no unexplained jump in empty weight
- The configuration at the last weighing matches the aircraft's current recorded fit
Evidence normally required
- The current weight and balance statement for the tail
- The weighing reports and their supporting data
- The running weight and balance amendment history
- The modification and equipment change records affecting mass properties
- The interior and equipment configuration reference for the aircraft
Common discrepancies
- A weight-shifting modification with no corresponding weight and balance amendment
- An amendment applied without a weighing or an approved calculation behind it
- A current statement that reflects a configuration the aircraft no longer carries
- A jump in recorded empty weight that the amendment history does not explain
What is at stake
A statement that does not match the current configuration puts the operating weight and balance figures in doubt, and reconciling them after the fact means unwinding a chain of amendments to find where the record and the aircraft diverged. At a transaction, an out-of-date statement signals the configuration record was not kept current, which pushes a buyer to check the modification record harder and discount what they cannot reconcile.
Move from findings to resolution
Move from findings to a documented resolution path.
How the work runs
Fix the current basis
Establish the weighing or calculated basis the current statement rests on.
Walk the amendments
Confirm each amendment corresponds to a recorded equipment change or modification.
Cross-check the modifications
Match every weight-shifting modification to a weight and balance amendment.
List the gaps
Record unrecorded or unsupported changes and sequence the corrections to bring the statement current.
What the buyer receives
- An exception list of unrecorded or unsupported weight and balance changes
- A source map tying each amendment to its weighing or calculated basis
- A closure plan for the amendments to reconstruct and the statement to bring current
Who uses the output
- Records teams keeping the weight and balance statement current with the configuration
- Continuing-airworthiness leads confirming the operating basis rests on a traceable record
- Asset and buyer teams checking the configuration record through the weight history
How the work fits into the transaction or program
Weight and balance reads directly off the modification and equipment record, so this review runs alongside those to confirm each mass-affecting change reached the statement. Its findings feed back into the modification and equipment-list reviews where an amendment is missing, and its current statement supports the operating documents the receiving operator relies on.
Aircraft-specific considerations
787 cabins are reconfigured often across operators, and the type's mix of composite structure and dense systems installations means equipment changes can move both weight and center of gravity in ways that have to be captured precisely. Because so much of the airframe is composite, a structural repair can also carry a small mass change that should reach the statement. The review is scoped to the reconfiguration and modification history of the specific serial number.
Jurisdiction-specific considerations
FAA and EASA operators can present and re-baseline weight and balance data differently, so at a register change the review notes where the statement and its amendment history have to be re-presented for the receiving system.
Regulatory limits
The review confirms the weight and balance records are current and traceable to a supporting basis. It does not weigh the aircraft, approve a calculation, or make an airworthiness determination on the operating figures or the aircraft.
What this review does not cover
- Physically weighing the aircraft or verifying the installed configuration
- Producing or approving a new weight and balance calculation
- Any airworthiness determination on the operating figures or the aircraft
Specific to this review
- Weight and balance is one of the few records that has to stay in step with the modification log continuously, so it is a fast read on whether the configuration record was kept current.
- A missing amendment for a weight-shifting modification is common after a cabin reconfiguration, because the change lands in the modification record before it reaches the statement.
- On a composite airframe even a structural repair can carry a small mass change, so the weight record and the repair record occasionally have to be read together.
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
How does a weight and balance review help check the configuration record?
Weight and balance amendments should follow every equipment change and modification that shifts mass, so the amendment history is a running index of the configuration. When a modification appears in the mod record but no weight amendment follows it, the two records have diverged, which points straight to a configuration entry that was not fully processed.
Relevant glossary terms
Related pages
Where this fits
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