Sơ đồ chỗ ngồi China Eastern Airlines Boeing 787-9

Four-class China Eastern Boeing 787-9. COUNTS ARE NEUTRAL-SOURCED, NOT PUBLISHED BY THE AIRLINE ON A CITABLE PAGE: the Wikipedia China Eastern fleet table lists 7 Boeing 787-9 in a 4 First / 26 Business / 28 Premium Economy / 227 Economy = 285 configuration (the config cells cite refs 72-74; the First column carries ref 78). China Eastern's own 2023 annual report (HKEX, PRIMARY) confirms the Boeing 787-9 among its operated fleet types but publishes NO seat counts or cabin dimensions. China Eastern's live site (ceair.com / global.ceair.com) is a JavaScript booking SPA with no static cabin-layout page, and no ceair.com 787-9 cabin/seat page exists in the Wayback Machine (only a marketing 777-300ER press release, which carries no counts) — so unlike the China Southern 787-9 (csair.com cabin page) there is no airline-published per-cabin split to cite. LAYOUT DERIVED_FROM_COUNTS: the entire row grid, cabin boundaries, door/exit positions, over-wing band, the two partial rows and all galley/lavatory placements are structural reconstructions from the published counts plus standard 787-9 abreast layouts; every cabin carries derived:true and no dimension is presented as airline-published (all measurements are marked unsourced+approximate). DERIVATIONS: First 1-2-1 row 1 (4). Business 1-2-1 staggered — a 2-seat centre bulkhead pair (row 10, D/G) plus six full rows 11-16 (24) = 26; the odd 2 is a derivation artefact of 26 not dividing by 4. Premium Economy 2-3-2 rows 20-23 (4x7 = 28), bulkhead exit row 20. Economy 3-3-3 rows 30-54 (25x9 = 225) plus a tapered 2-seat last row 55 (A/C) against the aft galley to reach 227; over-wing exit at row 38. Doors (1 fwd before row 1, 2 at the Premium Economy bulkhead row 20, 3 over-wing beside row 38, 4 aft after row 55), galleys and lavatories are derived. windowAlignment is left 'unknown' for window seats because the grid is derived (no 787 window grid exists, so windowGridType is omitted). DISCREPANCY: some travel-press reports give Premium Economy as 32 (total 289); the neutral Wikipedia backbone value of 28 (total 285) is used here and the 32/289 variant is noted as unresolved. Per-config airframe counts within the 7-aircraft 787-9 fleet are not published.