Current statement, proven
Weight and balance records in a scanned archive: which statement governs
Weight and balance records answer one question: what does the aircraft weigh now, and how do you know. This source review establishes whether a scanned archive can answer it, by identifying the governing weight and balance statement among the digitized documents, tracing its lineage back through weighings and amendments, and matching each amendment to the configuration change that caused it. A records specialist performs the review during archive-quality work or before the paper record is retired, and the records control lead receives a lineage report with every unsupported or superseded document flagged.
When this review is needed
- The archive holds several weight and balance statements and no reliable marker of which one governs.
- Interior, avionics, or structural changes were embodied since the last weighing and the amendments need to be located.
- A reweigh interval under the operator's program is approaching and the baseline document must be confirmed first.
- Delivery documents quote empty weight figures that differ from what the scanned statement shows.
The problem
Weight and balance is a living record that scanning freezes at a moment in time. Every seat change, galley swap, and equipment installation since then should have produced an amendment, yet amendments are one-page documents that slip between check packages during digitization. An archive can hold five statements from five eras, all official-looking, and offer no way to tell which figures the operator is legally flying on.
What gets reviewed
- Inventory of every weight and balance document in the archive: weighing reports, statements, amendments, and equipment change forms
- Identification of the governing statement and the weighing event it derives from
- Amendment chain reconstructed from the last physical weighing to the present
- Each amendment matched to its causal event in the modification, repair, or equipment records
- Arithmetic spot-checks on sampled amendments for weight and moment carry-through
- Legibility and completeness of the scanned weighing report, including scale calibration references
Scope this review
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What gets validated
- The document presented as current is dated and sequenced after every other statement in the archive
- Each amendment in the chain states its cause and carries an identifiable preparer
- Configuration changes with mass effect found in the modification records have matching amendments
- Empty weight and CG on the governing statement reconcile arithmetically through the sampled chain
- The underlying weighing report is fully captured, including all scale readings and correction pages
Evidence normally required
- All scanned weight and balance documents the archive contains, however indexed
- The modification and equipment change history for the period since the last weighing
- The operator's weight and balance control program or manual reference
- Current operating figures from flight operations or the load control system, for endpoint comparison
Common discrepancies
- A cabin reconfiguration documented in the modification records with no corresponding amendment anywhere in the archive
- The most recent weighing report scanned without its correction sheet, leaving the derivation of empty weight incomplete
- Competing statements from operator and MRO templates with figures that diverge by more than rounding
- Amendment arithmetic that carries a transposed moment value forward through every later document
What is at stake
Operating data built on a superseded statement propagates bad empty weight and center-of-gravity values into load planning, and the error stays invisible until an audit, a reweigh, or an incident investigation compares documents. Commercially, a transaction reviewer who finds competing statements with unexplained deltas will hold the item open until a fresh weighing settles it, at the owner's cost and on the transaction's clock.
Move from findings to resolution
Move from findings to a documented resolution path.
How the work runs
Collect and sequence
Gather every weight and balance document in the archive and order them by lineage, weighing to statement to amendment.
Anchor the baseline
Verify the last physical weighing is completely captured and arithmetically self-consistent.
Trace the chain
Match each subsequent amendment to a causal configuration change and check the carry-through.
Rule on governance
Report the governing statement, flag gaps and superseded documents, and advise on reweigh need.
What the buyer receives
- A lineage report naming the governing statement and tracing it to its weighing event
- A gap list of configuration changes lacking amendments, with the causal record cited for each
- A superseded-document register so obsolete statements can be marked in the index
- A recommendation on whether the evidence supports current figures or a reweigh is warranted
Who uses the output
- Records control leads marking governing and superseded documents in the digital index
- Weight and balance engineers deciding whether to amend or reweigh
- Transition and audit teams answering empty weight questions with sourced documents
How the work fits into the transaction or program
This review consumes the output of the modification status review, since embodied changes define which amendments must exist, and it feeds the equipment list check, where installed items and their mass effects should agree. In a full archive assessment the three run as a set, because a gap in any one of them usually predicts gaps in the other two.
Jurisdiction-specific considerations
FAA maintenance records under Part 43 and 91.417 must reflect alterations affecting weight and balance, with the revised figures recorded when a change is made. EASA operators additionally work under an approved mass and balance control system tied to Regulation 1321/2014 continuing-airworthiness requirements, and reviewers under either regime expect the current statement to be identifiable and derivable, never merely present.
Regulatory limits
The review reports on document lineage and evidential support within the archive. It does not compute or approve new weight and balance figures, does not perform or supervise a weighing, and does not determine compliance of the operator's mass and balance program with any regulation.
What this review does not cover
- Physical weighing of the aircraft or verification of scale equipment
- Preparation of new amendments or statements
- Load planning or performance calculations based on the reviewed figures
Specific to this review
- Amendments fail to get scanned more often than statements do, because a statement is a recognizable formal document while an amendment can be a single typed page stapled inside a work package.
- The correction sheet of a weighing report matters as much as the readings; without it, the jump from scale figures to empty weight cannot be followed, and reviewers treat the weighing as incomplete.
- Fleet-standard interiors tempt operators to copy amendments between tails, and a serial-number mismatch inside an otherwise plausible amendment is a finding that discredits the whole chain.
- When statements compete, the newest date does not automatically win; a later document derived from a superseded baseline is still wrong, which is why lineage rather than date order settles governance.
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 archive shows a change with mass effect but no amendment. Is a reweigh the only fix?
Not necessarily. If the modification record quantifies the mass and moment change, a qualified person can prepare a retrospective amendment from that data under the operator's program. A reweigh becomes the practical answer when several unquantified changes have accumulated or the chain has more than one break.
Relevant glossary terms
Related pages
Where this fits
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