We start with current official airline fleet pages, configuration diagrams and aircraft-manufacturer airport-planning manuals. Older research is a starting point for verification, not a substitute for a current primary source.
We transcribe cabin classes, row numbers, seat letters, omitted positions, exits and facilities. We compare drawn seat totals with the published configuration and record discrepancies. Main and upper decks are checked separately.
A configuration becomes public after its layout has been reviewed. Publication approval and review dates are recorded. Changes to a layout require another review; configurations without a complete diagram remain drafts.
Unpublished pitch, width and recline stay marked as not published. Defaults used to draw seats never become passenger specifications. Flexible Business boundaries are described only to the extent supported by the source.
Manufacturer dimensions inform the aircraft envelope. Interior positions, representative windows and facility distances may be estimates. Calculated proximity indicates a position on the drawing; it does not establish noise levels, queues, service activity or exact window alignment.
Seat guidance uses explicit source annotations and qualified renderer calculations. We do not present every exit seat as extra legroom, infer baggage restrictions from a partition line, or rank seats without supporting facts.
We record retrieval and review dates when checking sources and layouts. When a source changes or a discrepancy is found, we revisit the affected configuration. The airline may substitute aircraft; check the seat selection shown for your booking.