Sơ đồ chỗ ngồi Alaska Airlines Boeing 737 MAX 9

POST-REFRESH 178-seat 737-9 MAX layout (16 First / 30 Premium / 132 Main). The 2025-26 fleet refresh grew Premium Class from 24 to 30 seats by converting the six forward-most Main Cabin seats (one 6-abreast row) to Premium and adding USB-C/device holders; the 178 total and 16 First are unchanged. The 16/30/132 split is confirmed by the Wikipedia Alaska fleet table (current, post-refresh) and the Alaska newsroom expansion post (“737-9 MAX Premium Class 24→ 30, six Main Cabin seats converted, 80 airframes”); the refresh is in revenue service now (July 2026) — Wikipedia shows the MAX 9 fleet fully at 16/30/132 with no in-progress note. ROW GRID IS DERIVED from published cabin counts + layouts, not a published row-by-row map: First 2-2 on A/C/D/F rows 1-4 (16); no row 5 (forward galley/class divider); Premium 3-3 rows 6-10 (30, the added row 10 is the converted Main row); Main 3-3 rows 11-34 (132), last six rows (29-34) a 2-2 rear taper so the aft-most row is 34 while the total stays 132. Same derivation as the pre-refresh as-7m9-178 with the Premium/Main divider moved aft one row (Main rows 11-34 unchanged). Overwing exit rows 16-17 per alaskaair.com. WINDOW GRID: no variant-exact 737 MAX 9 grid exists in data/window-grids/, so aircraft.windowGridType is intentionally omitted (the 737-900ER and MAX 8 grids are NOT bound) and no structural window-blank was applied — every window seat carries windowAlignment “unknown”, matching the lineage anchor as-7m9-178. SOURCE INCONSISTENCY: Alaska’s 737-9 MAX aircraft page prose still describes the pre-refresh split and labels rows 6-9 as ‘42 Premium Class seats’ (impossible for four 6-abreast rows); we model the post-refresh 16/30/132 from the newsroom + Wikipedia and cite the aircraft page only for cabin structure. Main Cabin pitch (31-32 in) and recline (3 in), and First/Premium seat widths, are marked unsourced. fleetCount (80) is the total 737 MAX 9 airframes (Wikipedia).