Sơ đồ ghế American Airlines Airbus A321ceo — 190 ghế

American's standard domestic Airbus A321-200 (A321ceo) — the majority sub-fleet and 'largest operator' of the type. FLEET: American Airlines Group's FY2025 SEC Form 10-K reports 218 A321 (ceo) mainline aircraft (164 owned / 54 leased) at an AVERAGE of 184 seats as of 2025-12-31, with no cabin split. Wikipedia's American Airlines fleet table (neutral) splits the 218 into this 190-seat standard config (203 in service, 20 First / 35 Main Cabin Extra / 135 Main Cabin) and the 102-seat transcontinental A321T config (15 in service) — see aa-321-transcon. The blend reconciles the 10-K's 184-seat average exactly: (203*190 + 15*102) / 218 = 184, and 203 + 15 = 218. PER-CABIN COUNTS are Wikipedia's citable figures (20 / 35 / 135). Main Cabin Extra is American's extra-legroom economy PRODUCT, not a physically contiguous cabin (forward Main rows plus the exit rows, sold at a fee), so per AUTHORING section 6 it is modeled as a ZONE inside the single Main Cabin with seatType aa-mce (canonicalTier extra_legroom_economy). ROW GRID IS DERIVED, not a placard scan (aa.com hard-403s bots; competitor seat-map sites are prohibited). Derivation: First 2-2 (A/C/D/F) rows 1-5 = 20; a forward galley/lavatory class divider occupies the unnumbered gap; Main Cabin 3-3 rows 8-36 on the classic A321-200 airframe (four full door pairs, Doors 1-4, and two over-wing exit doors — NOT the A321neo's Airbus Cabin Flex geometry). MCE zone = forward rows 8-11 (24) + the two over-wing exit rows 15 (6) and 26 (5) = 35; standard Main fills the remainder = 135. Because 35 and 135 are not clean multiples of six, two rows are modeled short to hit the exact published counts: the aft over-wing exit row 26 is modeled with 5 seats (seat D removed for the Door 3 passage) and the rearmost row 36 with 3 seats (aft galley/lavatory taper). Exact partial-row placement, MCE row placement, exit-row rows, over-wing range and rear-monument positions are DERIVED from the identical Delta A321ceo airframe geometry (see dl-321-191) and may differ from the physical aircraft. windowAlignment left 'unknown' on all window seats (derived grid). aircraft.windowGridType intentionally omitted: no a321ceo grid exists in data/window-grids/, and the a321neo grid describes Airbus Cabin Flex door geometry that does NOT match the classic A321ceo; the A320-family grids carry no structural window blanks, so binding one would not change any windowAlignment value. American does not publish A321-200 pitch/width in any citable source, so all pitch/width values are flagged approximate/unsourced.