Sơ đồ chỗ ngồi Air China Boeing 777-300ER

High-density two-class Air China Boeing 777-300ER. PER-CABIN COUNTS ARE SOURCED: the Wikipedia Air China fleet table (neutral backbone) lists 28 777-300ERs in two configs, the high-density one being 36 Business / 356 Economy = 392 (no First). CABIN PRODUCT (Wikipedia prose citing airchina.us): Business = "Capital Pavilion" Collins Parallel Diamond lie-flat (2-2-2, 6'4" flat bed, 21 in width, 15-16 in screen); Economy ~31 in pitch, universal AC + USB-A. LAYOUT DERIVED_FROM_COUNTS: no published seat map was fetched, so the row grid, abreast, door/exit positions and monuments are structural reconstructions from the published counts + standard 777-300ER geometry; every cabin carries derived:true. ABREAST DERIVATION: Economy is modelled 3-4-3 (10-abreast) — the +95 economy seats over the 311 config far exceed what removing First (2 rows) and one Business row would free at 9-abreast, so a 10-abreast high-density economy is the supported reading (the alternative, 9-abreast over ~40 rows, is far less typical for a "high-density" branded config); economy width is set to 17 in (lower end of Air China's published 17-18 in range) to match 10-abreast. DERIVATIONS: Business 2-2-2 rows 10-15 (6x6=36); Economy 3-4-3 rows 20-55 — 35 full 10-abreast rows 20-54 (350) plus a tapered last row 55 (A/B/C/H/J/K = 6) to reach 356, with bulkhead row 20, two over-wing exit rows 38-39, a limited-recline row 37 ahead of them, and a galley-backed last row 55. Economy recline (5 in) and screen size are unsourced estimates flagged as such. windowAlignment is "unknown" on window seats because the grid is derived (no 777 window grid). Per-config airframe count within the 28-aircraft fleet is not published.