Sơ đồ ghế Delta Air Lines Boeing 737-900ER — 173 ghế

PUBLISHED (delta.com 737-900ER page): per-cabin seat counts, seat width and pitch, and cabin amenities. PUBLISHED (official Delta LOPA seat-map image): the full row grid — First 2-2 on columns A/B|C/D, Comfort & Main 3-3 on A-F, over-wing exit-row positions, galley/lavatory/closet monuments, and every reduced or removed seat. INFERRED: exit-row seats are modeled as extra-legroom Delta Preferred seats (Delta sells over-wing exit rows as Preferred) with the standard evacuation restrictions; the LOPA does not print per-seat recline limits, so no no_recline/limited_recline is asserted on the exit rows themselves (last rows backing onto the aft lav/galley are marked limited_recline). Window alignment is 'unknown' — the LOPA does not show window belt-line positions. Per-cabin power (AC outlet in First only) is read from the page's per-cabin amenity detail; the three configurations publish distinct per-cabin amenity icon sets. Food/Wi-Fi descriptions reflect Delta's standard service, not figures printed on this page. NOTE: the build hint anticipated a single 180-seat 20F/30C/130Y config; the live Delta page instead publishes three distinct 737-900ER configurations (739, 73J, 73R) and the 739 mix is 20F/27C/133Y. This 73R sub-fleet (173 seats) differs structurally: 12-seat First (rows 1-3), 24-seat Delta Comfort (rows 10-13), and Delta Main rows 14-36 with over-wing exits at rows 20-21 PLUS a mid-cabin exit-door pair between rows 29 and 30 (window seat F removed at row 29; row 30 gains extra legroom at the door). Variant-specific cabin icons differ: 739 shows Wi-Fi, USB/outlet, video and satellite icons; 73J shows USB/outlet/video but not Wi-Fi/satellite; 73R shows Wi-Fi only. Generic keys do not certify capabilities. Native Preferred corner markers identify product locations, not payment terms. Unlisted underseat dimensions do not prove absence of storage. Wing/recline metadata remains illustration-derived or unverified, not newly certified.